MilestonesPage 1

Corporate SocialResponsibility

Page 12

Food forthought

Page 18

Bee-schoolWhat honey bees teach us

about Cooling Towers

Tapestry ofWisdom

Page 21

Paharpurpulse The In-house magazine

Vol. 1 Issue 1 Feb, 2021

Curated and edited by:

PP KumarHead-Corporate Communications

Featuring articles by:

Saurav Ranjan DattaSenior marketing manager

Alomoy BanerjeeEngineer, Engineering

Debdut BosuEngineer, Marketing

Vivek GaonkarDGM Sales, Mumbai

Milestones 2

We love it 6

Spotted and Reported 8

Welcome aboard 11

Corporate social responsibility 21 Schools fuel the future

This just in 31 Emerging Opportunities

Point of view 41 What honey bees teach us about Cooling Towers

Practising happiness 17Appreciation of hard work

Food for thought 81 Learning from Sports

A page called life 02 A Lesson Well Learnt

Tapestry of wisdom 12 Lincoln writes to his son’s teacher

Dear friends,

The inaugural issue of our internal newsletter Paharpur Pulse in digital format is now in your hands.

That the newsletter is being launched on 1st February 2021, although may seem coincidental, is actually intentional.

It is exactly one year since we celebrated the birth centenary of our founder and our father Mr. Mahendra Swarup, whose vision, dedication, and resolution has made Paharpur Cooling Towers Ltd a global player in providing industrial cooling solutions.

Milestones such as these are the stepping stones for future success. Aspirations for the future are embedded in the inspirations from the past. Our future achievements will be determined by how well we have learned the lessons of the past and to what extent we practice the same, collectively and continuously in the future.

Paharpur Pulse will be the common thread that will bind us in our collective endeavor for excellence. It will on one hand be the dossier of our best practices and on the other hand, the compendium of your thoughts and opinions for the future.

The success of Paharpur Pulse will not be possible unless it has the contribution from each one of you with your insightful thoughts, untrammeled opinions, and futuristic viewpoints.

In today’s time, lateral thinking is the tree on which vertical thinking builds the nest of accomplishments. We thus, invite each one of you to let your imagination spread the wings and share your ideas through Paharpur Pulse.

We hope you will find the experience of reading The Paharpur Pulse both revealing and fulfilling.

Cheers!

Vikram SwarupMD, Paharpur Group

Gaurav SwarupMD, Paharpur Group

Contents

“The purpose of Paharpur Pulse will be to inform, engage and motivate. It will be to update you all constantly on significant developments within the organisation, market updates and competitors’ activities”.

Milestones ofleadership

Paharpur pulse | Milestones

The Joint Stock Company “Atomstroyexport”, of the Russian Federation has awarded the prestigious contract for performance of construction and erection works of 2 Nos. Natural Draught Cooling Towers along with other associated facilities on Lot No. 800 (Block 1) at Rooppur Nuclear Power Plant located in the People’s Republic of Bangladesh, Pabna District, Ishvardi sub-district, on the Eastern (left) bank of the Padma river. This contract happens to be our highest valued single order contract of all times with total order value of USD 153.85 Million.

GE Global Parts and Products GmbH has awarded PCTL the contract for supplying Counter Flow Pultruded FRP Cooling Towers for their OROT RABIN 70 CCGT PROJECT AT ISRAEL. The owner of the project is The Israel Electric Corporation Ltd. The order value of the project is 67,87,000 euros and will be completed by 31.08.2020.

The memorable moment of shaking hands between our Managing Director Mr Vikram Swarup and Vice President – Director (for Rooppur NPP Construction Project), Mr. Lastochkin Sergei Gennadievich which took place on 16-10-2019 after the contract signing.

Valued at USD 153.85 million, the Rooppur Nuclear Power Plant is Paharpur’s highest valued single order contract ever.

Atomsroyexportawards Paharpurour highest orderby value, ever.

Israel’s largestpower station optsfor Paharpur’scounterflowexpertise

Planting of saplings ceremony at Rooppur site by our Managing Director Mr. Vikram Swarup

2 3

Siemens selectsPultruded FRPtowers for powerplant in Germany

PCTL secured the first order for LOWPROACH COOLING TOWER with 1˚C APPROACH for 350 TR Chiller from Medica Superspecialty Hospital Kolkata. The order value was Rs. 12.35 lakhs.

M/s SIEMENS AG has selected PCTL for supplying of Counter Flow Pultruded FRP Cooling Towers in 10 working cells for the HERNE 6 PROJECT AT GERMANY. The owner of the project is M/S GuD HERNE GmbH. The total order value is Euro 6,319,900.00. The project will be completed by 30.06.2020 for 1st 6 cells & by 15.08.2020 for balance 4 cells.

Chambal Fertilizers & Chemicals Ltd has awarded PCTL the contract for rebuilding of three cells of existing PCTL make 7 cell Ammonia cooling towers II model and rebuilding of four cells of existing PCTL make UCT - I cooling tower (total 7 cells) for their plant at Kota, Rajasthan. The total order value for the same 6.84 cr.

Preparing to deliverour first Lowproachtower to MedicaHospitals

For the first time KR Pulp & Papers Ltd, Shahjahanpur, UP has placed an order with PCTL for the supply and erection of Induced Draught Pultruded FRP structured counter flow cooling tower for their 18MW Turbo Alternator and Evaporator Plant at Jalalabad Road, Shahjahanpur, UP. The total order value is Rs. 2.25 Cr.

KR Pulp & Papersorders an IDCT forits 18MW plant.

Highest valuedindustrial towerwith 48 cellsfor NTPC

NTPC - Kahalgaon engaged PCTL for supply and replacement of fill packs in 48 Nos cell in series 1000 Cooling Towers. With an order value of Rs. 12.88 cr this was the largest order till date in the category.

Herne 6 combined-cycle power plant,Herne, Germany

Herne 6 combined-cycle power plant,Herne, Germany

Chambal Fertilizers

Paharpur pulse | Milestones

Chambal Fertilizers returns to Paharpur for upgrade

4 5

Mr. Rajiv Sachdeva, Associate Vice President, PCTL, New Delhi, for securing an order worth Rs.6.84 crores from Chambal Fertilizers & Chemicals Ltd.

Mr. Rajiv SachdevaAssociateVice President

Mr. P. K. GangulyVice PresidentMarketing

Mr. P. K. Ganguly, Vice President, Marketing, Dry Cooling System for his contribution in booking the first hexacool ACC order.

Mr. Kaushilk MazumderDeputy ManagerMarketing

Mr. Kaushilk Mazumder Deputy Manager, Marketing secured the first order of LOWPROACH Cooling Tower with 1˚ approach

Mr. Arindam PaulAssistant ManagerSales, Kolkata

Mr. Arindam Paul, Assistant Manager Sales, Kolkata completed 15 km run in Calcutta Swimming Club Marathon.

Mr. Luigi ZanziGeneral ManagerPCT, Europe

We thank Mr. Luigi Zanzi for walking us through the configrator for F400 towers

Mr. Luigi ZanziGeneral ManagerPCT Europe

Mr. Matteo OrsiniSales Manager

PCT Europe

Mr. Mrinal ChatterjeeAdditionalGeneral ManagerPCTL, Kolkata

Ms. Tista GhoshalEngineer Sales

PCTL, Kolkata

Ashish SrivastavaAGM, Sales, PCTLDelhi

N. Arul PrakashSr. Manager

Marketing PCTL

Paharpur pulse | We love it

Our heartiest congratulations to Mr. Luigi Zanzi, Mr. Matteo Orsini, Mr. Mrinal Chatterjee and Ms. Tista Ghoshal, who successfully negotiated with GE Global Parts and Products GmbH for an order worth Euro 67,87,000 and with M/s SIEMENS AG for an order worth Euro 6,319,900.00.

Mr. Ashish Srivastava, AGM, Sales, PCTL, Delhi and Mr. N. Arul Prakash, Sr. Manager, Marketing PCTL, Kolkata, Industrial Marketing Division, managed breakthrough with KP Pulp & Papers Ltd, Shahjahanpur, UP with an order value of Rs. 2.25 cr.

Congratulationson the growth

PersonalAchievements

Nilesh BhattAsst. Manager-ExcisePCTL, Vadodra

Nilesh Bhatt, Asst. Manager -Excise, PCTL, Vadodra, for having successfully completed, 21.098 Km Half Marathon by Timeline on 08th Dec 2019 in Solefest Marathon. SoleFest Marathon is a run for charity of Cancer Hospital for purpose of Organ Donation and is organized annually, by HCG Cancer Center in Vadodara. Mr. Bhatt completed this in Male Category (Above 45 Years)

The Construction team led by Mr. Santanu Chatterjee, Chief Operating Officer (Seated Center) for having a record collection in the quarter.

The Kolkata factory team led by Mr. Siddharth Swarup (3rd from left) for having the Amada machine retro - fitted with a new control system.

6 7

Mr. Shankar Prasad Banerjee, Senior Manager – Credit Control, at PCTL Kolkata, has authored a book on the famous Urdu and Persian poet Mirza Ghalib.

Titled ‘ÎæJ>ô-&-Kà[º¤’ (Sukhan-e-Ghalib), and written in Bengali, the book is divided into three parts. The first part provides an insight into the author’s point of view for writing the book, the second part is a biography of the poet and the third part is a collection of eighty Galib ghazals translated into Bengali.

The book is the result of twelve long years of study and research on the life and works of the great poet. The book was launched at The Kolkata Book Fair 2020.

We at Paharpur congratulate Mr. Banerjee on his literary achievement and wish him the best in his creative pursuits.

Mr. Shankar Prasad BanerjeeSr. Manager, Credit ControlPCTL, Kolkata

Mumbai Team at Barbeque Nation

Paharpur pulse | Spotted and Reported

The Department of Atomic Energy (DAE) and the Department of Science & Technology (DST), along with the initiation from CERN, Geneva organized for the first time in Kolkata, an exhibition called “The Vigyan Samagam” to showcase India’s participation in mega science projects of the world and to highlight the India’s R & D contribution in these projects. The exhibition started on 4th November and will continue till end of December 2019.

PCTL participated in this exhibition by taking a stall to highlight our contribution to the International Thermonuclear Experimental Reactor (ITER) project, in France, by supplying Pultruded FRP Counterflow Cooling Towers for the project.

PCTL was represented by Mr. Narayan A. Mirji, Vice President, Marketing and by Mr. Atanu Maity,

Dy. Manager – Industrial Marketing.

Mr. Mirji was also part of a select group of representatives for panel discussion wherein he highlighted the contribution of PCTL in such prestigious international projects to an august gathering. He actively proposed measures that would pave the way for greater participation of Indian companies in such projects. His opinion was greatly appreciated by the audience.

Mr.Maity and ably supported by Mr. Mirzi, enthusiastically interacted with the visiting delegates and visitors at PCTL stall to enlighten them about the role PCTL plays in furthering India’s reputable contribution to international projects.

Spotted andReported

Paharpur revealsnew R&D at DAEenergy summit

Renovation atDelhi office

PCTL,Mumbai branchcelebrates“Diwali”

After a period of hectic renovation, the Delhi office of PCTL is sporting a brand new look.

Our Mumbai branch immersed themselves in the festive spirit of “Diwali” by organizing a small get – together at “Barbeque Nation” Mumbai.

Mr. Narayan A. Mirji, Vice President, Marketing, PCTL, participating in panel discussion.

Mr. Narayan A. Mirji, Vice President, Marketing and by Mr. Atanu Maity, Dy. Manager – Industrial Marketing at PCTL Stall in the exhibition.

Mr. Atanu Maity, Dy. Manager – Industrial Marketing, PCTL interacting with the visiting delegates

Reception at PCTL, Delhi office

The new look of PCTL, Delhi office

Proud members of PCTL,Delhi team at their new office

Mr. Narayan A. Mirji, Vice President, Marketing, PCTL being felicitated by the organizers

Entrance to Vigyan SamagamMr. Suman Sarkar, SO/G, RCnD, BARC, assures Mr. Mirji of all cooperation as Mr. Atanu Maity looks on

Projects on display at the exhibition

8 9

Paharpur pulse | Spotted and Reported

ACREX India 2020, South Asia’s largest exhibition on air-conditioning, heating, ventilation and intelligent buildings was held at Greater Noida from 27-29 February 2020. The 7th edition of the exhibition had 500 exhibitors from 23 countries and attracted

more than 40,000 visitors from 687 cities and 55 countries.

PCTL participated in this exhibition as Bronze partner and showcased our latest and most innovative cooling solution equipment, Spartium in the exhibition.

The PCTL Delhi team aided by Mr. Kanad Banerjee and Mr. Manish Saxena from Mumbai interacted with the visitors and impressed upon them the unique advantages and benefits of the product.

Paharpur at India’slargest HVAC Expo –ACREX 2020

The PCTL stall at ACREX 2020

SPARTIUM on display

Team Paharpur at ACREX 2020

PCTL stall – Inside View

PCTL team interacting with visitors

Paharpur pulse | Welcome aboard

Welcome aboardTeam Paharpur welcomes the newest membersof our team. We are honored to have you with us!

Mr. Ayan GangulySenior Vice PresidentDry Cooling Division

Mr. Ayan Ganguly has joined the Company, as Senior Vice President in Dry Cooling Division and will lead the Dry Cooling team.

Mr. Ganguly has done B.E. in Mechanical Engineering from Jadavpur University, MBA in Marketing & Finance from IMT, Ghaziabad, and has over 26 years of experience in reputed companies like M/s. CESC Ltd., M/s. Biecco Lawrie Ltd., M/s. Alstom India Ltd. etc.

Prior to joining us, he worked with M/s. GE Power India Limited as Chief Commercial Officer, Services.

Mr. Garg has done B.E. in Mechanical Engineering from Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, M.Tech. in Product Design and Engineering from Barkatullah Vishwavidyalaya, Bhopal and has 13 years of experience in reputed companies like M/s. GEI Industrial Systems Ltd., M/s. Gactel Turnkey Projects Ltd., M/s. Thermax SPX Energy Technologies Ltd.

Prior to joining us, he worked with M/s. Doosan Power Systems India Pvt. Ltd.

Mr. Devesh Kumar GargManager- EngineeringDry Cooling Division

10 11

Paharpur pulse | This just in

Ethanol blended Petrol (EBP) programme was launched by the Government of India in 2003 to promote use of alternative & environment friendly fuels. The present target is to allow ethanol blending in petrol/diesel @10% upto year 2022 ( approx. 313 Crore Litre Ethanol) & increase ethanol blending @20% upto year 2030.This also seeks to reduce import dependence & give boost to agriculture sector. Presently 220 MT crude oil is imported at cost of 640,000 Crore Rupees.

Consistent surplus of sugar production is depressing sugar price. Consequently sugarcane farmer’s dues have increased due to lower capability of Sugar industry to pay the farmers. With a view to limit sugar production in the country, Government has taken multiple steps.

The Cabinet Committee on Economic Affairs chaired by the Prime Minister Shri Narendra Modi has approval to fix the prices of Ethanol for sugar season 2018-2019 as below:

a) Ethanol derived from 100% Sugarcane juice: Rs 59 per Litre. (From prevailing price of 47 Rs/Litre)

b) Ethanol derived from B heavy molasses: Rs 53 per Litre. (From prevailing price of 47 Rs/Litre).

Apart from above, existing price of Ethanol derived from C heavy molasses: Rs 43 per Litre. Also Ethanol can be produced from damaged food grains/other sources also.

Impact of this decision will have following advantages:

1. Reduction in excess sugar in industry, increasing liquidity with

sugar mills for settling cane framer’s dues & making higher ethanol for blending in petrol/diesel.

2. All distilleries will take benefit of the scheme & produce more ethanol for blending in Diesel/petrol due to higher price offered. 88 distilleries has already announced programme to increase capacity.

3. Increased ethanol blending in Diesel/petrol has benefits like reduction in import dependency, support to agriculture sector, more environmental friendly fuel, lesser pollution and additional income to farmers. Paharpur Cooling Towers Ltd will seek this opportunity to capture this additional market for supply FEAP range of cooling towers. Every distillery needs three to four cooling towers for Fermentation, Distillation, Evaporation, Liquefaction, MSDH (Dehydration) application.

Emergingopportunities

Clients who are alreadyprepared for increasedproduction

Vivek GaonkarDGM (Sales),PCTL – Mumbai

The rise of EBP and what that means forprocess cooling in the sugar industry

PRAJ Industries Ltd

MOJJ EngineeringSystems P. Ltd

SS Techno Ltd

Shri Samarth Engg.

TOMSA Distill &Dhaval Evap. Distil

Pro-Energy Resources

Fabtech Projects

Fabtech Projects

Excel Engvineers Ltd

KBK Chem Engg P. Ltd

Meru Industries

Universal ForceIndustries

Alco-tech Engg

Mega Engineers

SS Engineers

Paharpur pulse | Corporate social responsibility

During the past few months, Paharpur has actively contributed to the building of primary schools. In association with NGOs Paharpur is engaged in building primary school buildings in Kedarpur, Chapatora, Belia and Gopalpur.

“Democracy without Education is Hypocrisy without Limitation.” The poignant truth and the glaring relevance of the above quote has been realized, and acted upon by the Paharpur Group. We at Paharpur realize how essential education is, to further and strengthen the world’s largest democracy. Paharpur has actively championed to promote education at the primary level by supporting the cause and committing financial resources as part of its CSR program.

SSM Kedarpur, South 24 Pgs

SSM Chapatora, Bankura

SSM Belia, Bankura

SSM Gopalpur, West Midnapore

Schools fuelthe futurePaharpur Cooling Towers is doingits bit to give back to society

Paharpur Group hasbuilt schools in “Democracy without

education is hypocrisy without limitation.”

— Ram Jethmalani,Noted lawyer & Politician

12 13

As 2√3 < min {3√3,4}, the area of the regular hexagon is the least of all the possible shapes capable of filling up a flat surface without any gaps in between. Hence, in the context of fill, this shows that of all possible packing arrangements, hexagonal packing takes the least amount of surface area for a given flute. Again, this means that the number of uniform fill tubes one can fit in the same amount of surface area is the maximum when one considers hexagonal packing.

As the number of tubes is maximum, water stream will get divided into maximum number of paths, thereby increasing the effective surface area and in water stream, ensuring optimum of heat transfer.

This combination of light-weight structure having maximum

number of flutes is put into effect brilliantly in nature by honey bees, who build efficiently packed hexagonal honeycombs with minimal materials. Even filled with honey, wax and whole colonies of bees, these structures can be seen hanging freely from branches of trees with barely any additional support.

In cooling towers, hexagonally packed film fill offers high heat transfer area while having low cost and weight in comparison to any other shape of packing, making it the optimum design for fill with clean water application.

As a closing thought, it is of some interest to note we are not the only ones using this

N.B. Even going by the above analysis of three shapes, hexagon has the least perimeter (4√3 x l) for a given in-circle diameter of l, followed by square (8 x l) and triangle (6√3 x l), considering gap-less packing.

A

C

D

B

OI

A

C

DE

B

O

I

A G F

C D

EBOM

1

I

For the triangle: Let the sides be equal to l1 and O be the centre of in-circle, OD is radius of in-circle.\Therefore,∠ADO = 90° and ∠AOD = 60°l × tan 60° = l1/2 or, l1 = 2√3 lTherefore, area of the triangle = √3/4 × (l1)2 = 3√3 l2 For the square, let the sides be equal to l2 and O be the centre of in-circle. OE is the radius of in-circle. l2 = 2 × lTherefore, area of the square = (l2)2 = (2×l)2 = 4 l2 For the hexagon, let the sides be equal to l3 and O be the centre of in-circle, OG is the radius of in-circle.M is chosen such that ∠AMB = 90°. Therefore, AM = OG = ∠ABM = 60°, hencel3 = cosec 60° × l = 2/√3 × lTherefore, area of the hexagon =(3√3/2) × (l3)2 = (3√3/2) × (2/√3 × l)2 = 2√3 × l2

Paharpur pulse | Point of viewPaharpur pulse | Point of view

The problem originated when four friends A, B, C and D, who lived in four different corners of a perfectly rectangular town, wanted to build a road to connect the four houses with the limited funds they had.

The question was, how a road can be built between the 4 houses, so that the least amount of material is used. The contractor, they hired, gave them a solution for least path, which looked something like this:

The contractor also mentioned, that for this model to give the least path, included angle to be considered is 120°. The justification, the contractor provided for this design, is enclosed at the end of this document.

Interestingly, if this design is mirrored on all four sides

geometrically, it would resemble a honeycomb. This result further supports Thomas C. Hales’ proof of the classical honeycomb conjecture, stating “any partition of a plane into regions of equal area has perimeter at least that of the regular hexagonal honeycomb tiling.”

In the context of cooling tower film-type fill, this implies that of all the ways the transverse

section of the fill (perpendicular to the length of the flutes) can be divided into sections of equal area without gaps, a regular hexagonal honeycomb pattern will have the least perimeter for a given number of flutes. As the least perimeter corresponds to the least amount of material used, the cost and weight of the fill pack will be lowest.

But this poses a follow-up question. The least perimeter implies the least surface area of the flutes, therefore least amount of contact area for the water. So how is this not a trade-off between a low cost solution and a thermally effective solution?

Let us consider the ways we can divide the cross section of the fill surface area such that there are no gaps in between. There are three ways – triangular packing, square packing and hexagonal packing – in which, we can achieve that (Since 360° has to be exactly divisible by the internal angle of the shape under consideration, e.g. 360°/60° = 6 for an equilateral triangle or 360°/90° = 4 for a square or a rectangle and so on). Let us consider an equilateral triangle, a square and a regular hexagon, all with the same in-circle diameter l unit (in the context of fill, the same nominal flute).

What honey beesteach us aboutcooling towers

D

CB

A

QP

l3

120O

l1

l3

l2

l1 - 2l3

R

The mathematical magic of the hexagonhas lessons for process cooling

14 15

Paharpur pulse | Practising happiness

One young academically excellent person went to apply for a managerial position in a big company. He passed the first interview, the director did the last interview, made the last decision. The director discovered from the CV that the youth’s academic achievements were excellent all the way, from the secondary school until the postgraduate research, never had a year when he did not score.

The director asked, “Did you obtain any scholarships in school?” The youth answered “none”.

The director asked, “Was it your father who paid for your school fees?” The youth answered, “My father passed away when I was one year old, it was my mother who paid for my school fees”.

The director asked, “Where did your mother work?” The youth answered, “My mother worked as clothes cleaner. The director requested the youth to show his hands. The youth showed a pair of hands that were smooth and perfect”.

The director asked, “Have you ever helped your mother wash the clothes before?” The youth answered, “Never, my mother always wanted me to study and read more books. Furthermore,

my mother can wash clothes faster than me”.

The director said, “I have a request. When you go back today, go and clean your mother’s hands, and then see me tomorrow morning”.

The youth felt that his chance of landing the job was high. When he went back, he happily requested his mother to let him clean her hands. His mother felt strange, happy but with mixed feelings, she showed her hands to the kid. The youth cleaned his mother’s hands slowly. His tear fell as he did that. It was the first time he noticed that his mother’s hands were so wrinkled, and there were so many bruises in her hands. Some bruises were so painful that his mother shivered when they were cleaned with water.

This was the first time the youth realized that it was this pair of hands that washed the clothes every day to enable him to pay the school fee. The bruises in the mother’s hands were the price that the mother had to pay for his graduation, academic excellence and his future. After finishing the cleaning of his mother’s hands, the youth quietly washed all the remaining clothes for his mother. That night, mother and son talked for a very long time. Next morning, the youth

went to the director’s office.

The Director noticed the tears in the youth’s eyes, asked: “Can you tell me what have you done and learned yesterday in your house?” The youth answered, “I cleaned my mother’s hand, and also finished cleaning all the remaining clothes”.

The Director asked, “Please tell me your feelings”. The youth said, “Number 1, I know now what is appreciation. Without my mother, there would not the successful me today. Number 2, by working together and helping my mother, only I now realize how difficult and tough it is to get something done. Number 3, I have come to appreciate the importance and value of family relationships”.

The director said, “This is what I am looking for to be my manager. I want to recruit a person who can appreciate the help of others, a person who knows the sufferings of others to get things done, and a person who would not put money as his only goal in life. You are hired”. Later on, this young person worked very hard and received the respect of his subordinates. Every employee worked diligently and as a team. The company’s performance improved tremendously.

Moral: If one doesn’t understand and experience the difficulty it takes to earn the comfort provided by their loved ones, then they will never value it. The most important thing is to experience the difficulty and learn to value hard work behind all the given comfort.

Appreciationof hard workA young man’s vital takeawayfrom an interview

16 17

References:1. The Honeycomb Conjecture– Thomas C. Hales, v. 4/17/00

2. James Webb Space Telescope– NASA (https://jwst.nasa.gov/)

Important Takeaways:

1. Since gapless hexagonal packing of flutes offers least perimeter for a fixed number of flutes, the amount of material required for the fills is least, thereby reducing both cost and weight of the assembly

2. A follow up query would be to justify using the least perimeter design, as it may seem to indicate the least amount of heat exchange surface. However, since of all possible gapless packing arrangements (triangular, square or rectangular and hexagonal), hexagonal packing offers least surface area for a given nominal diameter of flute, therefore, more number of uniform flutes can be fitted into a fixed area for hexagonal

packing than any other arrangement.

3. These two attributes balance out each other to make honeycomb structure the optimum packing arrangement.

4. This optimisation can be found to be put into effect brilliantly in nature, by honey bees. They build efficiently packed hexagonal honeycombs with minimal materials. Even filled with honey, wax and whole colonies of bees, these structures can be seen hanging freely from branches of trees with barely any additional support. Debdut Bosu

Engineer, (MarketingDepartment)PCTL, Kolkata

Total length of path = l = 4 × AP + PQ (AP = BP = CQ = DQ)

AP = √((l2/2)²+l3²) and PQ = l1-2l3

∴ l = 4 × √((l2/2)²+ l3²) + (l1-2l3)

Differentiating both sides, we get,

dl/dl3 = -2 + 4l3/√((l2/2)²+l3²) (l2 is constant)..................................(1)

For maxima or minima conditions, dl/dl3 = 0

∴l3 = ± l2/(2√3) or, l3 = l2/(2√3) (As distance cannot be a negative quantity)

Differentiating equation (1) again we get, d²l/dl3² = l2²/((l2/2)²+l3²)(3/2)

d²l/dl3² at point of extremity (l3 = l2/(2√3)) is positive.

Hence, the minimum length will be obtained for l3 = l2/(2√3)

∴tan(∠BPR) = l3/(l2/2) = 1/√3

or, ∠BPR = 30° From symmetry, 2 ×∠BPR + ∠APB = 180° or, ∠APB = 120°

Therefore, the design was indeed correct.

The contractors’ justification:

D

CB

A

QP

l3

120O

l1

l3

l2

l1 - 2l3

R

superstructure to our advantage. Even the most cutting edge technologies known to mankind are using hexagons to optimise their design. The James Webb Space Telescope, developed by NASA in association with ESA and CSA has used hexagonal mirrors instead of circular ones. This is due to hexagon’s efficient packing and ability to focus light from the edges towards the centre, which is almost as good as circles. Additionally, since this telescope is to be stationed in space, it needs to fit in a rocket. Modular hexagonal mirrors, folding on each other reduce the diameter of the primary mirror significantly.

Alomoy BanerjeeEngineer (EngineeringDepartment)PCTL, Kolkata

Paharpur pulse | Food for thought

Learningfrom sports#1 and the winning combination

The season of 1979-80 was significant to the Los Angeles Lakers, in more than one way. Not only did the season announce the arrival of Magic Johnson in the World Stage, but the victorious campaign of the Los Angeles Lakers served as an ideal example of team bonding and cohesion contributing to the success of a team in professional sports.

However, next season the biggest strength of the team last year, turned into their largest cause of concern. The Young Johnson clashed with the senior pro, Kareem Abdul Jabbar and a battle of one-upmanship proved to be detrimental for the team morale. The objective to outdo one another superseded the overall success for the team and the team from Los Angles, made one of the fastest exits ever by a defending champion, in the history of NBA.

As we see for the Los Angeles Lakers, a winning team or a winning combination can be very volatile. So, what exactly is a winning combination? Is it possible to create a team that could build a legacy of victory? The mighty West Indian cricket team could do it under Clive Lloyd. The Aussies managed to create a similar winning aura

about themselves from the late 90s till 2007. What is it that these teams did, that set them apart from their contemporaries? Let us try to investigate a few factors that are indispensable parameters in the development of a winning team.

Team Players: It happens so often in sports that players tend to keep individual performance

goals ahead of the team’s success. So often in basketball, you will see that forward trying to score a field goal from an impossible angle, rather than just passing it onto his unmarked teammate for a much more plausible 2 pointer. In cricket, so often you will find a batsman slowing down, on nearing a personal milestone. Such

individual performers are deleterious to the team environment and must be done away with.

Just as in sports team game is the mantra for success in business, as well. Executives at Xerox have reported that team-based operations are 30% more effective. FedEx says that teams reduced service errors (lost packages, incorrect bills) by 13% in the first year of operation.

Exit Policy: In a nation that is dazed by individual talent like India, emotion around legends often clouds the sense of logical judgment. Numerous examples can be referred to from the past that include the likes of Kapil Dev to Sachin Tendulkar, Sanath Jayasuriya to Javed Miandad, who overstayed their welcome in international cricket. However, champion teams often rise above the cloud of emotions and take a strict decision in terms of bidding farewell to legends. Ruud Van Nistel Roy had to make way for a certain Christiano Ronaldo in Manchester United, the legendary Ian Healy had to make way for the swashbuckling Adam Gilchrist. Neither Cricket Australia nor Manchester United was clouded by the emotional loyalty attached to the legends, and that

is what has made them champion teams over time.

The highly successful team of Nokia, which turns the company into one of the most admired brand was also sadly responsible for its shocking demise as it failed to realize the importance of Android operating system. As they say so often that, a business dies not because of the incompetence of the management, but because the rate of change happening outside the company becomes greater than the rate of change happening inside the company and both Nokia & Kodak learned this lesson the hard way.

Influx of Fresh Talent: Room for fresh talent is a highly dubious topic that has tormented team management for decades. Fresh talent must be given opportunity at the right instant of time. If they are exposed to the rigors of the

highest standard of sports way too early, the raw talent might just burn out as it did for Laxmi Ratan Shukla in the late 90s. On the other hand, if fresh talent waits in the wings for too long, they may turn out to be another Amol Muzumder or Subramanian Badrinath. Cricket South Africa was pretty good with this, back in the early 2000s. Graeme Smith was hailed as a future leader and

was handed over the reins of the team, as early as 22. For the next 10 years, he led South African cricket with responsibility and respect, bringing cricket fans of the Rainbow Nation back to the game, in the post-Cronje era

Pursuit of Excellence: The reason, why winning teams are respected and revered for generations together, is because they thrive in high -pressure situations and repeatedly trump their opponents in big Finals. This is exactly where Pete Sampras was different from Tim Henman. For 5-6 consecutive years in the 1990s, Tim would be the best player of the tournament till the semi-final, while Sampras would often encounter a pitfall or two, on his way to the semis. However, in pressure knockout matches, Sampras would thrive

and Tim would invariably succumb to pressure. As a matter of fact, Tim Henman is one of those very few players, who ended his career, without a single Grand Slam, in spite of being in the Top 10 ATP rankings for a substantial period.

Winning is not a free-size cloak of invincibility, that performers can put on. Hence, there are only

a few teams in the history of professional sports/business, who have simultaneously ticked all the boxes and managed to create a winning combination, which has transcended the barrier of space and time and have garnered undivided respect and admiration from all around the world.

Martin Turner author of the book “What business can learn from Sport Psychology” explains: “Business leaders can learn to develop skills to help them fulfill their potential under pressure and most importantly help others around them fulfill their potential. In both sports and business, people who can use their mind as a valuable weapon beat out the competition when performing under pressure”.

18 19

Paharpur pulse | A page called life

Saurav Ranjan DattaSenior ManagerMarketing(Realty Division)

This is a very uncommon tale. In fact, it is not a story at all but something which really happened. Something which happened at the very heart of the metropolis of Kolkata many years back when the technology boom has really not hit us that hard and when forces of nature were still very raw. I was myself a witness to it. I can clearly recall that dim evening when rain lashed with tremendous speed in various parts of this big city.

I had just started my career then with a construction firm. My job entitled to sit at various sites and travel between them for proper coordination. I had my friend and colleague Sampat Venugopal for company in those errands. Venu had a bike in those days, not the sleek ones that you see today, but rather the one which one could see in an old Door Darshan Ad. We used to travel on that most of the time, except for days when Venu would take a leave for a weekly off. He was one of the most fearless guys around then and had a big heart and would go to any extreme to help his friends.

The incident took place in one of our bike rides. During that season, we were commuting almost daily between sites in the North with sites in the fringes of the Eastern Metropolitan Bypass. Rajarhat has just opened up then,

a diversion, a long highway passing through broad fields of grass with the horizon touching the sky and nothing much visible except the green all around. In fact, it was quite soothing to the eyes to travel on that road, unlike the concrete vistas that you witness today. I don’t exactly recall the date now but it was sometime in the middle of the Monsoon. We took some documents from one of our sites on EM Bypass and were taking the diversion of Rajarhat through Salk Lake. The rain started the moment we bypassed Salt Lake. For some reason, we did not stop and went on thinking that the torrential shower will pass away soon. However, after sometime, it became quite impossible to see any object even some metres away. The rain dropped with tremendous speed. Hence, at the turn of a bend, when Venu somehow sighted an advertising board, he suggested to stop there. Though the canopy of the board felt inadequate to shade us from the rain, still it would have been some respite as driving the bike in that tremendous downpour would have been dangerous. On getting down, we found another bike by the side of the road and a man standing beneath the advertising canopy. Venu and I took our bike to a stop, locked it and when we started towards the advertising board, that man was gone and so was his bike. Venu asked me in surprise ‘S, did you watch the guy pass by?’ I was myself bewildered by the quickness of the entire incident. ‘When did the man start the bike and went away?’ But we did not have much leisure to think about the incident then and had to pass the rain somehow in that small enclosure of a little shade that the canopy was offering. It was almost dusk and because of the rain, the entire surroundings were already bleak.

Soon as expected, the rain passed away and we resumed our journey

completely drenched. After an hour, we reached our site in North Kolkata and freshened up. As tea was served, the team started talking about their day. Venu narrated the incident of that odd man. As soon as he completed, another member of our team Chandanda seemed perplexed. Venugopal asked him what the matter was. Chandanda still seemed to be in a daze and muttered that some days back, a man on a bike met with a terrible accident in the rains on the same road and around the same bend which we mentioned.

He was riding a bike at tremendous speed and the bike slipped. After two days he passed away in a nearby hospital. These kinds of mishaps are a common occurrence in Kolkata and the newspapers just mentioned the incident in a couple of lines without ever mentioning the identity of the man.

Venugopal and I both fell into a high fever the same night and as we came to know later, both couldn’t attend office for a couple of weeks. When we joined later and sat down to discuss, we realised that somebody probably came from the spirit world right at that moment, to show us not to suffer the same fate which had befallen him a few days ago. It’s always better to wait, have some patience, than to unnecessary hurry and miss the precious life in the process. Every moment of life is important, rushing it all the time, will only bring its doom. Sigh! When would we ever understand this? A lesson well learnt.

A lessonwell learntOne of the many reasonsnot to roam the streetslate at night

20 21

Paharpur pulse | The tapestry of wisdom

Lincoln writesto his son’s teacher

My son starts school today. It is all going to be strange and new to him for a while and I wish you would treat him gently. It is an adventure that might take him across continents. All adventures that probably include wars, tragedy and sorrow. To live this life will require faith, love and courage.

So dear Teacher, will you please take him by his hand and teach him things he will have to know, teaching him – but gently, if you can. Teach him that for every enemy, there is a friend. He will have to know that all men are not just, that all men are not true. But teach him also that for every scoundrel there is a hero, that for every crooked politician, there is a dedicated leader.

Teach him if you can that 10 cents earned is of far more value than a dollar found. In school, teacher, it is far more honorable to fail than to cheat. Teach him to learn how to gracefully lose, and enjoy winning when he does win.

Teach him to be gentle with people, tough with tough people. Steer him away from envy if you can and teach him the secret of quiet laughter. Teach him if you can – how to laugh when he is sad, teach him there is no shame in tears. Teach him there can be glory in failure and despair in success. Teach him to scoff at cynics.

Teach him if you can the wonders of books, but also give time to ponder the extreme mystery of birds in the sky, bees in the sun and flowers on a green hill. Teach him to have faith in his own ideas, even if everyone tells him they are wrong.

Try to give my son the strength not to follow the crowd when

everyone else is doing it. Teach him to listen to everyone, but teach him also to filter all that he hears on a screen of truth and take only the good that comes through.

Teach him to sell his talents and brains to the highest bidder but never to put a price tag on his heart and soul. Let him have the

courage to be impatient, let him have the patient to be brave. Teach him to have sublime faith in himself, because then he will always have sublime faith in mankind, in God. This is the order, teacher, but see what best you can do. He is such a nice little boy and he is my son.

A letter written to his sons teacher explains whatLincoln wants his son to learn at school

PAHARPUR COOLING TOWERS LTD.Paharpur House, 8/1/B Diamond Harbour Road, Kolkata 700027, IndiaPh : +91 33 4013 3000, Fax : +91 33 4013 3499, pctccu@paharpur.com

www.paharpur.com

Alig

ned

to le

ad