Water Cooler Cum Refrigeration Lab Report

“Manufacturing And Analysis Of Water Cooler Cum Refrigeration System”
By
Pandya Dakshesh (120550119016)
Patel Dipen (120550119042)
Parmar Vishwaraj (120550119052)
Bhadru Payal (120550119025)

Guided By
Mr.Rikesh Patel
Assistant Professor
Department Of Mechanical Engineering,
Engineering College,Tuwa.

A Report Submitted To
Gujarat Technological University
In Partial Fulfilment Of The Requirements For
The Bachelor Of Engineering
Mechanical
Winter 2015 Engineering College,
Tuwa, Godhra.

Acknowledgement
We Feel Very Happy To Get The Opportunity To Convey Our Deep Sense Of Gratitude To All Those Who Have Been Share Enough Knowledge To Offer Their Advice And Provide Help When Needed Which Has Led To Successfully Complete
The refrigerator is used to store food items, medicines, beverages and such other materials. The useful life of foods and other items can be lengthened due to storing at low temperatures. Now a day’s refrigerator is not a luxury it has become part of requirements in every middle and lower middle class households. The household’s refrigerator is also used for cool water and ice cubes. The consumption cold water requires frequent opening of the refrigerator doors, this decreases the performance of the refrigerator as well as the food item stored undergo sharp rise in temperatures around. Hence providing a separate water cooler/chilling provision with in the refrigerator and providing convenient water outlet without opening the doors will be very advantageous for the performance of the refrigerator. The Refrigerator consists of compressor, condenser coils, expansion devices and evaporator coils. In this system a hermitically sealed compressor having capacity of about 120 watts, an air cooled condenser, an evaporator coil are generally used. In The present work a domestic refrigerator is modified to serve both the purposes as refrigerator and water dispenser. Suitable design and operation were modified with a view to save space, initial cost and maintenance
One British thermal unit is equal to about 1055 Joules. It is the amount of energy needed to cool or heat one pound (0.453 kg) of water by 1 deg. Fahrenheit. Commercial refrigerators in the US are mostly rated in tons of refrigeration, but elsewhere in kW. One ton of refrigeration can freeze one short ton of water at 0 deg. C in 24 hours i.e. 2000 pounds of ice at 144 BTUs per pound (heat of fusion of water) = 288000 BTUs
288000/24 = 12000 BTUs/hr. or one ton of refrigeration. Energy Analysis Of Refrigeration:
Consider a boundary enclosing a space in which a refrigerator is placed. It is clear that some heat q2 is given out at temperature higher than the surroundings. It is also clear that the foodstuff placed inside the refrigerator is cooled by giving out their heat to the refrigerator which in turn, so to say, absorbs heat q1, of course at lower temperature than the surroundings. Every refrigerator is supplied with energy wither in the form of heat or electricity, that is, some work (w) is provided to it. The refrigerating device, thus is absorbing heat at lower temperature and giving out at higher temperature; this is usually not possible in our day to day life, since heat cannot flow from lower to higher temperature, but in case of a refrigerator this is achieved at the cost of energy supplied