heater and cooler
TRANSCRIPT
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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.