sunlabob energy audit...sunlabob energy audit ... energy efficiency consultancy prior to...

Sunlabob Energy Audit

Energy Audit Department, Sunlabob Renewable Energy Ltd

Introduction to the Sunlabob Energy Audit ການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີການນ ໍາ້ສະເໜີ ການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງການກວດສອບພະລງັງານຂອງ ບໍລສິດັບໍລສິດັບໍລສິດັບໍລສິດັ ຊນັລະບບົຊນັລະບບົຊນັລະບບົຊນັລະບບົ

Customer, Vientiane, Lao PDR – Sept 2011

Contents and Aims of the Presentation

Contents

I. Sunlabob company II. Energy efficiency III. Phase I: Auditing and consultingIV. Phase II: Implementation

AimsTo provide customer with an overview of our concepts and services and present the benefits of an energy audit towards energy efficiency.

� Commercial energy provider based in Vientiane since 2000

� Specialised in renewable energy solutions

� 10 years experience in providing energy for off-gri d areas

• Local knowledge of culture / language / business context

• Extensive experience in training local staff

� 2 methods to deliver energy solutions:

• Selling hardware (Direct Sales)

• Selling service (Service Provider)

� Award-winning company

Who is Sunlabob?

3 I. Sunlabob company

Energy contributors in Laos

Ministry of Energy and Mines

� Official support in Lao P.D.R.

� Long term relationship with Sunlabob

I. Sunlabob company4

Energy efficiency department

Sunlabob energy efficiency department helps you to reduce the energy consumption in your buildings with the following solutions:

1. Energy Audit on existing buildings2. Energy Efficiency Consultancy prior to construction of

new buildings3. Supplying and installing Energy Efficient Equipment4. Behavioral training, work reorganization

5

WHAT do we offer to our customers?

I. Sunlabob company

� Energy efficiency activity started in April 2007� First and only company officially licensed by Ministry of Energy and Mines in Lao

PDR to conduct energy audit

Energy efficiency department

� EE department assets– Dynamic building performance simulation: Derob software

– Supported by Sunlabob’s 10 years of expertise in:• Solar water heater, solar photovoltaic

• Decentralized energy free waste water treatment systems: DEWATS

– Experienced in implementation of: efficient lighting, insulation, motion sensors, etc.

– Wide range of experiences: Offices, camp sites, houses, schools

6 I. Sunlabob company

� EE customers – successful start with several large contracts:

– Phu Bia Mining campsites (offices, workshops, accommodations, laundry) : 35.6% savings

– Swiss Development Cooperation agency: 45.9% savings

– Vientiane College: 51% savings

– Lao-German House: 34% savings

– Theun Hinboun Power Plant Company: 37 % savingsPhuBiaMining Ltd.

WHY energy efficiency is beneficial to our customer s?

� Money: Operational cost-efficiencies = positive impact on business profitability

� Security: Increased energy security (electricity outages, reliability)

� Quality: Increased comfort and lower maintenance

� Environment: Reduced environmental impact and increased sustainability of

buildings

� Image: Energy savings = environment protection = increased marketing

potential (corporate social responsibility)

7 II. Energy efficiency

10 Steps towards Energy Efficiency

Phase I : Auditing / ConsultingPhase I : Auditing / Consulting Phase II : ImplementationPhase II : Implementation

1 2 3 4 5 6 7 8 9 10

8 II. Energy efficiency

What is an Energy Audit?

9 III. Phase I: Auditing and consulting

WHAT� Study of the energy use and wastes of your facilities

� Energy efficient turnkey solution recommendations

OBJECTIVES� Give a better understanding of the energy consumption

� Identify and reduce energy wastage and inefficiencies

� Reduce the energy costs and environmental impact of the building

� Establish an energy management program

BENEFITSEnergy Audits can create savings up to 50% off theenergy consumption of buildings in use.

PHASE I – Step 1

Parts of the Energy Audit quotation1

10

Building Size

Energy Expenses

Density of Equipment Detailed Quotation

- Standard project: Quotation free of charge for phase I.

- Large and specific project: A pre-audit site survey will be necessary.Sunlabob Engineering team will review the site before providing an EA quotation.

III. Phase I: Auditing and consulting

PHASE I – Step 2

Agreement & Contract2

Should management decide to proceed, following a meeting and presentation of the quote, a contract will be drawn up to outline the costs and time frame of the project.


Customer

PHASE I – Step 3

On-site Data Collection3

Detailed analysis of the site to determine where, when and how energy is used:

� Evaluation of site, plant, building and equipment operation

� Survey of all the building and equipment energy specifications

� Behavioural questionnaire to staff

� Hourly consumption profile metering over a period of 7 days

Important to cooperate with staff during

interviews and measurements +

suggestions for improvements


PHASE I – Step 3

� The following physical values are measured and

recorded:

13

On-site Data Collection3


• Electrical energy (power, intensity, voltage,

energy, power factor, harmonics, etc.)

• Temperature (air, surfaces)

• Humidity

• Luminosity

• Flow rates (air, water)

• Heat flows

• Pressure (gas, liquids)

• Sun insulation

Nameplate Effective Total Effective

Office

10 Fluorescent Philips 5 46 50 252 0.43 0.54 11 5 52 721

100 CFL Downlight Generic 8 13 23 183 0.16 0.64 12 5 52 570

Ceiling exhaust fan Generic 1 60 60 0.43 0.65 12 7 52 260

CFL Downlight Generic 8 13 23 183 0.16 0.64 12 5 52 570

Air conditioner MITSUBISHI 1 2625 2625 11.33 0.99 6 5 30 2362

Fluorescent Philips 2 46 50 101 0.43 0.54 12 5 52 314

Air conditioner MITSUBISHI 2 3391 6781 5.9 0.84 6 5 30 6103

Fluorescent Philips 12 46 50 605 0.43 0.54 12 5 52 1887

Refrigerator TOSHIBA 1 67 93 93 0.57 0.75 24 7 52 810

Water cooler Seandara 1 116 102 102 0.71 0.67 12 7 52 445

Oven Berjaya 1 810 697 697 3.4 1 0.5 5 52 91

Bread griller Berjaya 1 2500 2498 2498 10.86 1 1 5 52 649

Water Boiler Zebrathakand 1 1800 2400 2400 10.3 1 1 5 52 624

Coffee machine Generic 1 1129 1129 4.89 0.999 1 5 52 294

Microwave oven Sharp 1 1220 1220 1220 5.28 1 0.5 5 52 159

Power factor

ApplianceConsumption per

year (kWh/yr)Area Brand

101

Days per week

Hrs /day

Intensity (A)Power (W)Qty

103

104

Weeks per year

Example of on-site data collection table


PHASE I – Step 4

Data Analysis & investigation on energy efficient s olutions4

� Energy consumption indicators calculation (kWh/m2, kWh/staff)

� Chart of the actual energy use per appliance and building

� Research and sourcing of materials for customer’s unique context

� Savings and payback period calculation


Single day consumption profile Heat transfer principles

Evaporative air cooling

Global areas of improvements

– Behavioral training• Energy conservation: an energy saving potential not to forget

→Around 10-15% of savings of the total bill in most cases

– Air conditioning and insulation• Thermal insulation and shading of buildings

– Reduction of air conditioning load: more than 20% savings on AC• Air conditioning maintenance and controls

– Optimal operation reduces energy usage and increases systems lifetime


Solar protectionCellulose insulation

Global areas of improvements

17

– Lighting• Inefficient devices replaced by efficient ones – optimizing energy usage

→Halogen and T8 to efficient lighting offers 70% and 35% savings respectively

• Implementing control systems (timers, presence sensors) reduce device working time: more than 30% savings

• Better utilisation of natural lighting: natural light tube

– Office equipment improvement• Optimizing energy usage of computer systems, printers, photocopiers, etc.


N computingLaptopLEDTimer

Light tube

CFL

18

– Hot water• Solar water heaters or heat recovery from AC units can

provide ‘free’ hot water: up to 90% savings

– Kitchen appliance improvement• Optimizing energy usage of refrigerators, freezers,

cookers, dish washers, water coolers, water boilers: between 25%1 and 45%2 savings

– Laundry appliances• Optimizing energy usage of washing machines, dryers:

70% savings by implementing natural drying

Specific areas of improvements


1 adding control on appliances; 2 change of appliance type and size

Solar water heater

Natural drying

Industrial areas of improvements

19

– Motors• Improving the control system will adjust the power to the load: up to

50% savings*→Reduce peak power→ Increase lifetime of equipment

• Switch to more efficient and well sized motors: 5 – 10% savings*

– Electricity distribution• Implement capacitor bank

→Reduce the current intensity and the consumption: up to 20%

– Pumps• Replacement with efficient and properly sized systems


*over sizing of motor by 30%

20

� The recommendations can immediately reduce energy costs by 5% - 15% using zero or low cost solutions.

� Savings of 30% - 50% (or more) can be achieved by adopting more committed solutions.

Expected savings on total bills


Summary of findings from data analysis and recommendations:

� Description of the work involved in applying each implementation measure

� Cost of implementing each recommendation

� Annual energy and cost savings for each recommendation

� Cost/benefit analysis: payback period

Report Writing5

PHASE I – Step 5


Example of data analysis charts


Lights 22.3%

Air conditioner

39.71%

Fans 1.0%

Computers 8.1%Other office

1.1%Water heater 4.9%

Kitchen 2.7%

Industrial Equipment

20.20%

Electrical consumption by appliance per year

Admin office 31.9%

Medical building

6.1%Workshop

15.0%

Laboratory 34.4%

Warehouse 5.2%

Project office 7.4%

Electrical consumption by building per year

Example of equipment inventory table


Device Units

Halogen bulbs 12V 20W 49

Halogen bulbs 12V 35W 3CFL bulb 11W 47

CFL bulb 5W 16

T8 Fluorescent 36W 5

Halogene bulb 40W 41

T8 fluorescent 18W 8

Incandescent bulb 10

Halogene standard lamp main

4

Halogene standard lamp secondary

3

Halogen desk lamp 1

Desk lamp 1

9

188

Single Phase 19

19

Ceiling fan 3

Standing fan 7

Extraction fan 11

21

CategoryL

ight

s

Ceiling fixtures

179

Lamps

TOTAL Fans

Aircon

Fans

TOTAL Aircon

TOTAL Lights

TOTAL Ceiling fixtures

TOTAL Lamps

Category Device Units

PU Laptop 1Mornitor for

Laptop1

CM+PU+UPS 13

15

Printer 4

Photocopier 1

Fax 1

6

Microwave 1

Fridge 3

Water cooler 2

Water boiler 3

Water pump 1

Coffee Machine 2

12

Dehumidifier 1

Server System 1

Computers

Kitchen appliances

TOTAL Other Office Equipment

TOTAL Computer

TOTAL Kitchen appliances

Other office equipment

Different investment range

� Zero cost investment measures

( implementable by customer).

� Low to medium cost investment measures

� High cost investment measures

Findings and recommendations included in the report will be presented by

Sunlabob energy audit staff

Presentation of findings & recommendations to the c ustomer6

PHASE I – Step 6


With different payback periods

� Short : few months

� Medium: 2-3 years

� Long: 5 years or more

Phase I - Step 6

25

Template of the main summary table of the report


Designation Quantity UnitCost per

unit (USD)

Total cost, labour and installation

included (USD)

Current energy

consumption (KWh/year)

Energy consumption

with the solution

(KWh/year)

Energy savings

(KWh/year)

% of energy saved

per appliance

% of energy

saved on total

electricity bill

Solution 1

Solution 2

…

Solution n

Energy savings

(USD/year)

Product lifetime (year)

Total cost for non efficient

material in similar

conditions (USD)

Cost difference between

efficient and non efficient

solution (USD)

Payback period (year)

Return on investment

over lifetime (%)

Net savings over product

lifetime (USD)

Net savings over 10 years (USD)

Net savings over 20 years (USD)

PHASE II – Step 7

Implementation of Solutions 7

� Maintenance, adjustment and upgrading of existing hardware for

better energy efficiency

� Installation of new energy efficient hardware

� Behaviour training to all levels of staff

� Implementation of an energy efficiency policy

� Hardware monitoring

� Work organization set up

26 IV. Phase II: Implementation

Phase II will start after a new contract agreement with Sunlabob and will be based on the customer’s decision of which soluti ons to implement.

Cellulose ceiling insulation

PHASE II – Step 8

User Training8

� Energy efficiency awareness sessions

� Technical use of new hardware implemented to all levels of staff

� Technical use of energy monitoring devices to monitoring staff

� Environmental impact awareness sessions


PHASE II – Step 9

Certification9

• No existing standard in the Lao PDR – still to

be defined and approved.

• Use of international standards instead,

according to customer’s needs

• Certification process to be conducted by the

Lao Institute for Renewable Energy (LIRE) as

an independent body.

Examples of existing standards worldwide

Europe USA

ThailandAustralia


PHASE II – Step 10

Monitoring & Performance Evaluation10

� Installation of energy monitoring devices

� Setting up of an organization to monitor energy consumption in the premises

� Training of energy monitoring staff

� Regular evaluation of results achieved compared to set targets


Power meter Power meter

Sunlabob Renewable Energy Ltd

PO Box 9077, Vientiane, Lao PDR - Tel: (+856 21) 313874 - Fax: (+856 21) 314045

[email protected] www.sunlabob.com

Thank you.

Feel free to contact us for more details or to arrange a meeting.

Introduction to the Sunlabob Energy Audit

sunlabob energy audit...sunlabob energy audit ... energy efficiency consultancy prior to...

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