1. INTRODUCTION

Air conditioning has become one of the basic need for mankind to

sustain the hot climatic conditions due to global warming and to sustain

the winter conditions as well. But in a country like India where the

climatic conditions are usually hot, it is necessary to have a cooler in

order to bare the hot conditions. Though there are many air conditioners

invented with various features to overcome this crisis but they all emit

greenhouse gases like Hydro Fluoro Carbon (HFC), Carbon-di-Oxide

(CO2), Hydro Fluoro Ethers (HFE) there by leading to global warming

which in turn increases the surface temperature of the earth’s surface and

also leading several health issues like dehydration, allergies, asthma, and

also most of them run with the help of electricity which is produced with

the help of non-renewable which is depreciating every day form of

energy hence in order to overcome these issues it is necessary to design

an air conditioner with zero emission and minimum energy consumption.

So it is wise to design the modern air conditioner to run with help of

renewable energy and with the capability of converting it into a warmer,

hence our project is designed in a way to compromise these problems.

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1.1 Objective

The main objective of the project is to use the renewable energy

resource to operate the air cooler and to convert it as warmer as well with

the help of heating coil.

1.2 Scope of project

Evaporative cooling systems have the advantage of using harmless

working fluids such as water or solutions of certain salts, they are

environmentally safe. Additionally, producing electricity from renewable

resources can solve the crisis of over consumption of non-renewable

energy resources.

1.3 Project planning

To start of this project, a meeting with the supervisor in the first

week was done to manage the schedule of weekly meetings. The purpose

is to inform the supervisor on the progress of the project and guided by

the supervisor to solve difficulty.

Briefing based on the introduction and next task of the project is

given by supervisor. Make research on the literature review with the

means of the internet, books available, published articles and materials

that is related to the title.

Design phase start of by sketching a few models using manual

sketching on A4 papers. We did so as to make comparison for choosing

the best concept. Software applications were downloaded from internet to

design the model based on the sketches. Software Solid works helped us

to draw better dimensional model.

The preparation of mid-presentation of the project was the next.

Before presenting, the supervisor will see through the slide presentations

and comment on corrections to be made.

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2. TERMINOLOGY OF EVAPORATIVE COOLING SYSTEM

2.1 EVAPORATIVE COOLING SYSTEM

An evaporative cooler is a device that cools air through

the evaporation of water. Evaporative cooling differs from typical air

conditioning systems which use vapour-compression or absorption

refrigeration cycles. Evaporative cooling works by employing water's

large enthalpy of vaporization. The temperature of dry air can be dropped

significantly through the phase transition of liquid water to water vapour

(evaporation), which can cool air using much less energy

than refrigeration. In extremely dry climates, evaporative cooling of air

has the added benefit of conditioning the air with more moisture for the

comfort of building occupants. Air washers and wet cooling towers use

the same principles as evaporative coolers but are designed for purposes

other than directly cooling the air inside a building. For example, an

evaporative cooler may be designed to cool the coils of a large air

conditioning or refrigeration system to increase its efficiency.

2.1.1PRINCIPLE OF EVAPORATIVE COOLING SYSTEM

Fig 2.1 Principle of evaporative cooling system

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Evaporative coolers lower the temperature of air using the principle

of evaporative cooling, unlike typical air conditioning systems which

use vapour-compression refrigeration or absorption refrigerator.

Evaporative cooling is the addition of water vapour into air, which causes

a lowering of the temperature of the air. The energy needed to evaporate

the water is taken from the air in the form of sensible heat, which affects

the temperature of the air, and converted into latent heat. This conversion

of sensible heat to latent heat is known as an adiabatic process because it

occurs at a constant enthalpy value. Evaporative cooling therefore causes

a drop in the temperature of air proportional to the sensible heat drop and

an increase in humidity proportional to the latent heat gain. Vapour-

compression refrigeration uses evaporative cooling, but the evaporated

vapour is within a sealed system, and is then compressed ready to

evaporate again, using energy to do so. A simple evaporative cooler's

water is evaporated into the environment, and not recovered. In an

interior space cooling unit, the evaporated water is introduced into the

space along with the now-cooled air; in an evaporative tower the

evaporated water is carried off in the airflow exhaust.

2.2 SOLAR POWER PRODUCING SYSTEM

Solar power is the conversion of sunlight into electricity, either

directly using Photovoltaics (PV), or indirectly using Concentrated Solar

Power (CSP). Concentrated solar power systems use lenses or mirrors

and tracking systems to focus a large area of sunlight into a small beam.

Photovoltaics convert light into electric current using the photovoltaic

effect. Photovoltaics were initially, and still are, used to power small and

medium-sized applications, from the calculator powered by a single solar

cell to off-grid homes powered by a photovoltaic array. They are an

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important and relatively inexpensive source of electrical energy where

grid power is inconvenient, unreasonably expensive to connect, or simply

unavailable. However, as the cost of solar electricity is falling, solar

power is also increasingly being used even in grid-connected situations as

a way to feed low-carbon energy into the grid.

2.2.1 PHOTO VOLTAIC CELL

Fig. 2.2 Photo voltaic cell

A solar cell also called a photovoltaic cell is an electrical device

that converts the energy of light directly into electricity by

the photovoltaic effect. It is a form of photoelectric cell in that its

electrical characteristics e.g. current, voltage, or resistance vary when

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light is incident upon which, when exposed to light, can generate and

support an electric current without being attached to any external voltage

source, but do require an external load for power consumption.

2.3 WIND POWER PRODUCING SYSTEM

To extract energy from wind and to convert that energy into

electrical power, we need a Wind Turbine setup which can convert the

mechanical power into electrical power. The blades of the wind turbine

are fixed to the rotor part of the generator set which is mounted on the

turbine using gear-arrangement. Wind with a speed of 5km/hr or more

causes the rotation of the blades of the turbine. As the blades rotate, the

mechanical power then converts into electrical power with the help of

generator set.

2.3.1 WIND TURBINE

Fig 2.3 Wind turbine

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A wind turbine is a device that converts kinetic energy from

the wind into electrical power. A wind turbine used for charging batteries

may be referred to as a wind charger. The result of over a millennium of

windmill development and modern engineering, today's wind turbines are

manufactured in a wide range of vertical and horizontal axis types. The

smallest turbines are used for applications such as battery charging for

auxiliary power for boats or caravans or to power traffic warning signs.

Slightly larger turbines can be used for making small contributions to a

domestic power supply while selling unused power back to the utility

supplier via the electrical grid. Arrays of large turbines, known as wind

farms, are becoming an increasingly important source of renewable

energy and are used by many countries as part of a strategy to reduce

their reliance on fossil fuels. Not all the energy of blowing wind can be

harvested, since conservation of mass requires that as much mass of air

exits the turbine as enters it. Betz' law gives the maximal achievable

extraction of wind power by a wind turbine as 59% of the total kinetic

energy of the air flowing through the turbine.

Further inefficiencies, such as rotor blade friction and drag,

gearbox losses, generator and converter losses, reduce the power

delivered by a wind turbine. Commercial utility-connected turbines

deliver about 75% of the Betz limit of power extractable from the wind,

at rated operating speed. Efficiency can decrease slightly over time due to

wear, while the other half saw a production decrease of 1.2% per year.

Wind turbines are designed to exploit the wind energy that exists at

a location. Aerodynamic modelling is used to determine the optimum

tower height, control systems, number of blades and blade shape. Wind

turbines convert wind energy to electricity for distribution. Conventional

horizontal axis turbines can be divided into three components.

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2.3.2 WIND POWER PRODUCING CIRCUIT

Fig. 2.4 Wind power producing circuit

Differential heating of the earth’s surface and atmosphere induces

vertical and horizontal air currents that are affected by the earth’s rotation

and contours of the land and generates wind. A wind turbine obtains its

power input by converting the force of the wind into torque (turning

force) acting on the rotor blades. The amount of energy which the wind

transfers to the rotor depends on the density of the air, the rotor area, and

the wind speed. The dynamo fitted to the rotor converts the mechanical

energy to electrical energy, the produced electricity is used to recharge

the battery.

2.4 COMPONENTS USED

2.4.1 MILD STEEL SHEETS

Sheet metal is simply metal formed into thin and flat pieces. It is

one of the fundamental forms used in metalworking and can be cut and

bent into a variety of different shapes. Countless everyday objects are

constructed with sheet metal. Thicknesses can vary significantly;

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extremely thin thicknesses are considered foil or leaf, and pieces thicker

than 6 mm (0.25 in) are considered plate.

Sheet metal is available in flat pieces or as a coiled strip. The coils are

formed by running a continuous sheet of metal through a roll slitter.

The thickness of the sheet metal is commonly specified by a traditional,

non-linear measure known as its gauge.

Fig 2.5 Sheet metal

Forming process of sheet metal

Several forming process carried out by using sheet metals are,

i. Bending

Bending is a manufacturing process that produces a V-shape, U-

shape, or channel shape along a straight axis in ductile materials,

most commonly sheet metal. Commonly used equipment

includes box and pan brakes, brake presses, and other

specialized machine presses. Typical products that are made like

this are boxes such as electrical enclosures and rectangular

ductwork.

ii. Curling

Curling is a sheet metal forming process used to form the edges

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into a hollow ring. Curling can be performed to eliminate sharp

edges and increase the moment of inertia near the curled end. Other

parts are curled to perform their primary function, such as door

hinges.

iii. Decambering

Decambering is the metalworking process of removing camber, or

horizontal bend, from strip shaped materials. The material may be

finite length sections or continuous coils. Decambering resembles

flattening or levelling processes, but deforms the material edge

(left or right) instead of the face (up or down) of the strip.

iv. Perforating

Perforating is a cutting process that punches multiple small holes

close together in a flat work piece. Perforated sheet metal is used to

make a wide variety of surface cutting tools, such as the surform.

2.4.2 SOLAR PANEL

Fig.2.6 Solar panel

A solar panel is a set of solar photovoltaic modules electrically

connected and mounted on a supporting structure. A photovoltaic module

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is a packaged, connected assembly of solar cells. The solar panel can be

used as a component of a larger photovoltaic system to generate and

supply electricity in commercial and residential applications. Each

module is rated by its DC output power under standard test conditions

(STC), and typically ranges from 100 to 320 watts. The efficiency of a

module determines the area of a module given the same rated output - an

8% efficient 230 watt module will have twice the area of a 16% efficient

230 watt module. A single solar module can produce only a limited

amount of power; most installations contain multiple modules.

A photovoltaic system typically includes a panel or an array of solar

modules, an inverter, and sometimes a battery, solar tracker and

interconnection wiring.

Application of solar panels

i. Pumps

Solar well pumps are common and widespread. They often meet

a need for water beyond the reach of power lines, taking the place

of a windmill or wind pump. One common application is the filling

of livestock watering tanks, so that grazing cattle may drink.

Another is the refilling of drinking water storage tanks on remote

or self-sufficient homes.

ii. Fans

Connecting a photovoltaic panel directly to a DC mechanical

fan motor can provide air movement when it is most needed during

the day. Common applications include

both attic and greenhouse ventilation. Increased efficiency can be

obtained by interposing a linear current booster (LCB) between the

solar panel and the fan motor, to more closely coordinate varying

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panel output with motor energy requirements. Other controls

sometimes used are timers and thermostats, so that the fan does not

run when not wanted, even if the sun is shining.

iii. Solar vehicles

Ground, water, air or space vehicles may obtain some or all of

the energy required for their operation from the sun. Surface

vehicles generally require higher power levels than can be

sustained by a practically sized solar array, so a battery is used to

meet peak power demand, and the solar array recharges it. Space

vehicles have successfully used solar photovoltaic systems for

years of operation, eliminating the weight of fuel or primary

batteries.

iv. Small scale solar systems

Solar systems usually generate power amount of ~2 kW or less.

Through the internet, the community is now able to obtain plans to

construct the system and there is a growing trend toward building

them for domestic requirements. Small scale solar systems are now

also being used both in developed countries and in developing

countries, for residences and small businesses. One of the most

cost effective solar applications is a solar powered pump, as it is far

cheaper to purchase a solar panel than it is to run power lines.

2.4.3 RECIRCULATING PUMP

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Fig. 2.7 Recirculating pump

A circulator pump is a specific type of pump used to

circulate gases, liquids, or slurries in a closed circuit. They are commonly

found circulating water in a hydronic heating or cooling system. Because

they only circulate liquid within a closed circuit, they only need to

overcome the friction of a piping system (as opposed to lifting a fluid

from a point of lower potential energy to a point of higher potential

energy).

Circulator pumps as used in hydronic systems are usually electrically

powered centrifugal pumps. As used in homes, they are often small,

sealed, and rated at a fraction of a horsepower, but in commercial

applications they range in size up to many horsepower and the electric

motor is usually separated from the pump body by some form of

mechanical coupling. The sealed units used in home applications often

have the motor rotor, pump impeller, and support bearings combined and

sealed within the water circuit. This avoids one of the principal

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challenges faced by the larger, two-part pumps: maintaining a water-tight

seal at the point where the pump drive shaft enters the pump body.

Small- to medium-sized circulator pumps are usually supported entirely

by the pipe flanges that join them to the rest of the hydronic plumbing.

Large pumps are usually pad-mounted.

Pumps that are used solely for closed hydronic systems can be made

with cast iron components as the water in the loop will either become de-

oxygenated or be treated with chemicals to inhibit corrosion. But pumps

that have a steady stream of oxygenated, potable water flowing through

them must be made of more expensive materials such as bronze.

2.4.4 BLOWER FAN

Fig.2.8 Blower fan

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Blower fans are by far the most prevalent type of fan used in the air

conditioning industry today. They are usually cheaper than axial fans and

simpler in construction. It is used in transporting gas or materials and in

ventilation system for buildings. They are also used commonly in central

heating/cooling systems. They are also well-suited

for industrial processes and air pollution control systems. It has

a fan wheel composed of a number of fan blades, or ribs, mounted around

a hub. As shown in Figure 1, the hub turns on a driveshaft that passes

through the fan housing.

2.4.5 BATTERY

Fig.2.9 12V lead acid battery

An electric battery is a device consisting of one or

more electrochemical cells that convert stored chemical energy into

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electrical energy. Each cell contains a positive terminal, or cathode, and a

negative terminal, or anode. Electrolytes allow ions to move between the

electrodes and terminals, which allows current to flow out of the battery

to perform work. Primary (single-use or "disposable") batteries are used

once and discarded; the electrode materials are irreversibly changed

during discharge. Common examples are the alkaline battery used

for flashlights and a multitude of portable

devices. Secondary (rechargeable batteries) can be discharged and

recharged multiple times; the original composition of the electrodes can

be restored by reverse current. Examples include the lead-acid batteries

used in vehicles and lithium ion batteries used for portable electronics.

Batteries come in many shapes and sizes, from miniature cells used to

power hearing aids and wristwatches to battery banks the size of rooms

that provide standby power for telephone exchanges and computer data

centers. Batteries have much lower specific energy (energy per unit mass)

than common fuels such as gasoline. This is somewhat mitigated by the

fact that batteries deliver their energy as electricity (which can be

converted efficiently to mechanical work), whereas using fuels in engines

entails a low efficiency of conversion to work.

2.4.6 WIND TURBINE

A wind turbine is a device that converts kinetic energy from

the wind into electrical power. A wind turbine used for charging batteries

may be referred to as a wind charger. The result of over a millennium of

windmill development and modern engineering, today's wind turbines are

manufactured in a wide range of vertical and horizontal axis types. The

smallest turbines are used for applications such as battery charging for

auxiliary power for boats or caravans or to power traffic warning signs.

Slightly larger turbines can be used for making small contributions to a

16

domestic power supply while selling unused power back to the utility

supplier via the electrical grid.

2.4.7 HEATING COIL

Fig.2.10 Heating coil

Water heating is a thermodynamic process that uses an energy

source to heat water above its initial temperature. Appliances that provide

a continual supply of hot water are called water heaters, hot water

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heaters, hot water tanks, boilers, heat exchangers, geysers, or calorifiers.

These names depend on region, and whether they heat potable or non-

potable water, are in domestic or industrial use, and their energy source.

In domestic installations, potable water heated for uses other than space

heating is also called domestic hot water.

3. MODEL AND CALCULATION

3.1 MODEL OF COOLER

Fig.3.1 Front view

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Fig.3.3 Back view

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Fig.3.4 Isometric view

Fig.3.5 Isometric view with water circuit

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Fig.3.6 Isometric view with heating coil

3.2 SOLAR PANEL SPECIFICATION

300mm

Fig 3.7 Solar panel specification

i. 300x300mm Photovoltaic panel

ii. 10 watts capacity

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300mm

iii. 12v DC

3.3 WIND TURBINE SPECIFICATION

Fig 3.8 Wind turbine specification

i. Length of blade=70mm

ii. Dynamo capacity=12v

3.4 CIRCUIT DIAGRAM

Fig 3.9 Circuit diagram

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3.4.1 SOLAR POWER CIRCUIT

i. Before starting the operation, the solar panel is exposed to sun rays.

ii. The solar panel converts the solar energy into 12VDC electrical

energy.

iii. This electrical energy from the solar panel is utilized to run the set

up of cooler.

3.4.2 WIND POWER CIRCUIT

i. The outside temperature of the cooler is reduced to lower level and

the cooling effect is achieved by the supplying air mist from the

cooler forced from the fan blower.

ii. The sprayed water is collected in a sump at the bottom of the

cooler unit.

3.5 EVAPORATIVE COOLER CALCULATION

Dry bulb temperature ( chennai )=40o c =104oF

Wet bulb temperature=25oC=77oF

Efficiency of media in direct cooling method= 90%

Efficiency of media in indirect cooling method=70%

Temperature reduction achievable using direct evaporative cooling

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=(dry bulb temp-wet bulb temp) x media efficiency

=(104-77) x 0.9

= 24.3oF

Achievable temperature= dry bulb temp- achievable temp drop

=104-24.3

=79.7oF = 26.5oC

Saturation efficiency

Saturation efficiency = Ti-To

Ti-Two

= 104-79.9

104-77

= 0.9

= 90%

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Air flow velocity =500 fpm = 2.54 m/s

Building volume =10x8x8 = 640 cubic ft.

Air change = 30 corresponding to79.7oF

Evaporative cooling in Standard Cubic Feet per Meter (SCFM)

SCFM = 640 cubic ft/ Ac x 30 AC / liters / 60 min

SCFM = 640x30

60

= 320 SCFM

Evaporation rate = SCFM x wet bulb depression x sat

8700

= 320x24.3x0.9

8700

Evaporation rate = 8 GpH = 0.61 liters /min

3.6 POWER AND TIMECALCULATIONS

3.6.1 SOLAR PANEL CALCULATION

For 17 AH, 12V battery watt hour

17x12= 204 WH

For a panel having low power producing capacity, the net power

produced is given.

Calculated with loss factor.

10x0.85=8.5W

Hence to obtain 204 WH = time x 8.5

Time = 24 hours

Thus the battery need to be charged for 24 hours by the solar panel for

complete charging of battery.

3.6.2 WIND POWER CALCULATION

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Length of blade = 0.07m = radius of blade

Wind speed V = 12m/s

Density of air r = 1.23 kg/m3

Betz limit Cp = 0.4

Area A = pr2

= px0.072

A = 0.0154m2

Power available = 1x r.A.V3xCp

2 = 1x1.23x0.0154x123x0.4

2

P = 6.546 W

Hence the time taken for recharging the battery is

204 WH= Time x 6.546

Hence Time = 31.16 hrs

3.6.3 COMBINED TIME CALCULATION

Net power produced by solar panel= 8.5 W

Net power produced by wind turbine=6.546W

Hence the time taken for recharging the battery with the help of combined

power is given by

204WH = Time x ( 8.5 + 6.546 )

Time = 13.55 hours

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3.7 TIME GRAPH

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8 9 10 11 120

20

40

60

80

100

120

Fig 3.10 Wind speed vs Time taken for rechargingWind speed in m/s

Tim

e in

hrs

3.8 COMBINED TIME GRAPH

8 9 10 11 120

5

10

15

20

25

Fig.3.11 Varying wind speed with constant solar power 10WWind speed in m/s

Tim

e in

hrs

6 7 8 9 100

5

10

15

20

25

30

Fig.3.12 Varying Solar power with constant wind speed 9m/sPower in watts

Tim

e in

hrs

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4. FABRICATION AND RESULT

4.1 CONSTRUCTION OF EVAPORATIVE COOLER

It consists of a box shaped hollow structure to a size of 450 x 450 x

450 mm. It is made of M.S. sheet of thickness of 1.5mm. The top and

bottom of the cooler is designed as the shape of a dome for easy flow of

air and water. The sprayer arrangement is provided on the top of the

cooler. The water to be spray is pumped from the sump in the cooler and

passed through the plastic pipes which has the holes for spraying the

water sprayed.

The blower is fitted at the side of the cooler. The wire meshes are

provided to slow down the flow of both air and water and to provide more

time of contact. The air from the blower passes through the water spray

and gets cooled. This cooled air is passed through the ventilator. At same

procedure it will be operated as warmer with the help of heating coil

provided in sump. Heating coils temperature can be adjust.

An electrical switch panel board is mounted outside the cabin to

switch ON / OFF the fan unit. The whole arrangement is coated with

metal primer and then finishes with decorative metal enamel paint. The

solar panel is 150 x 600 mm size producing the 12V DC supply when the

sun rays are falls on it. And the wind turbine is producing 12V DC

whenever the energy available in atmosphere which tend to rotate wind

turbine blades. And it will produce the required electricity for the system.

4.1.1 STAGES OF FABRICATION

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Fig 4.1 Fabrication of cooler box

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4.2 WORKING PRINCIPLE

There are three circuits and one control panel involved,

1. Water circuit

2. Air circuit

3. solar panel circuit

4. Electrical control panel.

i. Electrical control panel

There are three switches used to control this unit. First

switch is used for ON/OFF control. The second one is used for

switching either pump or heater unit. The third switch is used for

forward and reverse control of blower fan.

ii. Water circuit

The water from the cooler sump is discharged at the top of

the cooler. The water is sprayed through the holes provided in the

plastic pipes. The water enters the pipe and passes out through the

row of holes in the pipe in order to have more contact with the air

by spraying the water.

iii. Air circuit

The outside temperature of the cooler is reduced to lower

level and the cooling effect is achieved by the supplying air mist

from the cooler forced from the fan blower. The sprayed water is

collected in a sump at the bottom of the cooler unit.

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iv. Solar panel and wind turbine circuit

Before starting the operation, the solar panel is exposed to

sun rays. The solar panel converts the solar energy into 12VDC

electrical energy. This electrical energy from the solar panel is

utilized to run the pump.

Whenever the moisture is exposed air either in the form of

droplets (or) sheet, part of it is evaporated. As the liquid changes

into vapour, the heat required for evaporation is taken from the

remaining water itself and thus the water gets cooled.

Whenever the water comes in contact with the atmospheric

air, the heat from the air to water is also transferred as “sensible

heat” as the hot air temperature is higher than the cold water

temperature. i.e wet temperature is lower than dry bulb

temperature. The heat transfer due to evaporation increases, as

WBT of atmosphere air is lower than DBT of air. The difference

between the DBT and WBT indicates the capacity of air to absorbs

the water vapor. The rate of heat transfer between the water and

air depends upon

1. The initial temperature of water

2. Temperature of atmospheric air,

3. Relative humidity of air,

4. The movement of air and solar radiates

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5. Higher DBT

6. Lower WBT

7. Higher air movement gives the better cooling of water

8. Area of heat transfer

9. Duration of contact between the two medicines

The net heat rejected per kg of air from the water is given by

80% of total total gain by water is removed by evaporation and 20% by

sensible heat transfer.

Total heat transferred = heat of evaporation + sensible heat

The rate of evaporation of water in cooling tower and subsequent

reduction in water temperature depends upon the following factors,

a. Amount of water surface exposed

b. The time of exposure

c. The relative velocity of air passing over the water droplets

formed in Cooler.

d. The R.H. of air and difference between the inlet air WBT

and water

e. Inlet temperature

f. The direction of air flow relative to water

Higher the surface area, more time of exposure, low relative

humidity, higher difference between WBT of air and water inlet

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temperature and cross flow lead to effective cooling and reduce the tower

size.

4.3 ADVANTAGES OF HYBRID AIR COOLER AND WARMER

i. Does not depends upon any conventional power source and hence

can be operated any time irrespective of the power-cut.

ii. Since it is a hybrid system, the battery can be re-charged under any

climatic conditions

iii. It can be used in any climatic condition for air conditioning

iv. Less maintenance required

v. Portable system

vi. Easy to operate

vii. The efficiency of the system increases as the atmospheric

temperature increases, hence it performs well in warmer countries

like India.

4.4 LIMITATIONS

i. Depends upon nature’s mercy

ii. Reflection losses at the top surface of solar panel

iii. Incomplete absorption of the photon energy due to limited cell

thickness

iv. Frictional loss in wind energy rotor

v. Battery life

vi. Varying power input to battery

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4.5 COST ESTIMATION

Table 4.1 Cost estimation

S.NO COMPONENTS COST (Rs)

1 SOLAR PANEL 2300

2 BLOWER FAN 1600

3 WIND TURBINE 700

4 WATER PUMP 1200

5 SHEET METAL 1300

6 WATER CONTAINER 300

7 PIPE LINE 100

8 PAINT 200

9 BATTERY 1200

10 HEATING COIL 400

11 CONNECTING WIRE 100

12 WELDING 800

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TOTAL Rs.10200

5. CONCLUSION

Our project may be right solution for renewable energy utilization

which is the future. Efficiency of renewable energy utilization is

improved by combining solar and wind energy in our project. In future

the demand for our project rises automatically due to the lack of non-

renewable energy resource and increasing global warming. Since it can

be used as warmer as well, it can be used in any climatic conditions.

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REFERENCE

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