heater and cooler

8/13/2019 Heater and Cooler

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DIPLOMA IN

MECHANICALENGINEERING

Diploma in mechanical engineering2010-2013


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MINI FREEZE CUM WATER HEATER AND

COOLER

UNDER THE ESTEEMED GUIDANCE OF

M.SANDEEP

SUBMITTED BY5THBATHCH

(2010-2013)


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MEMBERS IN BATCH

10032-M-056(LEADER)

10032-M-013(2NDL)

10032-M-060

10032-M-030

10032-M-046 10032-M-026

10032-M037

10032-M-038

10032-M-044

10032-M-053 10032-M-022


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SINCERE THANKS TO:

B.pardhasaradhi garu

G.V.S Nageswarao garu

T.venkateswara rao garu


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INTRODUCTION

REFRIGERATION is a process ofremoval heat from the space orsubstance to reduce and maintain

temperature lower than thesurroundings

The heat carrying medium used in

the refrigeration system is known asREFRIGERANT


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WATER COOLER

Water cooler is used toproduce cold water at about 8-10 c

Classification:1. Pressure cooler

2. Bottle type cooler


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REFRIGERATION SYSTEM CUM

CYCLE

COMPRESSION

CONDENSATION

EXPANSION EVAPORATION


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BOTTLE TYPE WATER HEATER AND COOLER

COMPONENTS

COMPRESSOR

CONDENSER

EXPANSION DEVICE EVAPORATOR

OTHER COMPONENTS WATER CONTAINER

COLD WATER CHAMBER

HOT WATER CHAMBER


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COMPRESSOR

It is the heart of vapor compression system.

It picks up heat from evaporator Compresses and sends it to condenser

It is called as high pressure side


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CONDENSER

Air cooled condensers Water cooled condensers Evaporative condensers

It is a component which abstracts latent heatfrom the high pressure refrigerant at constanttemp and pressure. it removes heat absorbed bythe refrigerant in the evaporator and heat ofcompression is added in the compressor andcondenses back to liquid. for this purposes thecondenser employs cooling medium such as air orwater.


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EXPANSION DEVICES(CAPILLARY TUBE)

VARABLE RESTRICTION TYPE

CONSTANT RESTRICTION TYPE

TYPES AUTOMATIC EXPANSION VALVE

THERMO0STAIC EXPANSION VALVE

SOLENOID VALVE

CAPILLARY TUBE

It is a constant restriction type expansion device.capillary tube with 1 to 6 mts long with inside diametregenerally ranges from 0.5 to 2mm.it is used in smallplants.


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EVAPORATOR

It is a component which absorbs

heat from the surroundings to be cooled by usingvolatile liquid called refrigerant. quick

evaporating refrigerant flows through the coils ofevaporator and absorb she heat of productsplaced in it, evaporates and changes into liquidstate. the heat picked up by the refrigerant iscarried to the compressor and then to the

condenser


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EVAPORATOR


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WATER CONTAINER

It is also called as babooltank. It holds a capacity of 15 litersof water.It is made up of plasticmaterial.This will be filled at regularintervals


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COLD WATER CHAMBER

This is a chamber that is just beneath

the babool tank or water container. This is madeup of stainless steel and contains evaporativecoils around it. As the cooling arrangement is on,then these evaporative coils surrounding the coldwater chamber removes heat from water thereby keeping the temperature of water about 8-10c.this chamber is connected to thermostat by

which cooling stops whenever it temperaturereaches to 8-10c.


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HOT WATER CHAMBER

This chamber draws water frombabulstank through cold water chamber. It issurrounded by heating coils. when the heatingsystem is on the heating coils operate and heatsthe water to a temperature of about 85C.thistemperature cannot be increase. Because ofthermostat is connected to hot water chamber.The water temperature is maintained constantly.

outlet is connected below the heater throughwhich heater hot water is collected.It uses 10amps.


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REFRIGERANT:

R-134 A

(CHLORO FLOURO CARBON FREON GROUP)

1. Non toxic

2. Non flammable

3. Non corrosive


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APPLICATIONS

TO DRINK COLD WATER

TO DRINK HOT WATER

TO KEEP THE PRODUCTS FREEZEN USING

COOLING CABINET


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SWITCH

INDICATORS

RED SWITCH - HOT WATER CHAMBER

GREEN SWITCH - COLD WATER CHAMBER


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CONCLUSION

We express sincere thanks to state board of technicaleducation and training,M.R.K.Polytechnic,veeravasaram forgiving this opportunity to implement our skills on project

work which we developed. we are really proud to say thatwe utilized the knowledge obtained in the class room forthe last three years and could make the project worksuccessful. This gives us confidence and satisfaction thatgives long way in making our future life Bright and

prosperous one.

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