Starting with liquid refrigerant:
A refrigerator works using a thermostat. It automatically switches itself on when needed and off when not needed. A thermostat works (putting it on) by using two strips of different metals which have a charge which is positive in them, usually Copper(Cu) and Aluminium (Al) or Copper (Cu) and Iron (Fe). One metal expands well and one doesn't. Thus the one that doesn't is pushed by the one that does (when under heat), and they both touch a metal that has a negative charge in it, thus completing the circuit and keeping the fridge on. (putting it off) When the metal cools down, it goes back to it's normal position and thus breaks the circuit ,keeping the fridge off.
it has an evaporator in the fridge and it cools down the gasses and turns them into a liquid which is subzero and the the liquids cool down your food.
The refrigerator keeps the food you store it cold. It saves the food so it doesn't go to waste.
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The Bell-Coleman Cycle is also known as the Air-Standard Refrigeration Cycle or Reverse Brayton Cycle. This 4-process refrigeration cycle involves isentropic compression, followed by isobarric heat rejection, then isentropic expansion (usually by a turboexpander), and finally isobarric heat intake.This cycle is commonly used in jet aircraft, using engine bleed air for compression and venting to the atmosphere. It is also commonly used in commercial air liquification plants.
what are the advantages and disadvantages of refrigeration
the importance of refrigeration because when the heat is exesrted from lower temperature to higher temperture
tonnes of refrigeration
rapid evaporation
Refrigeration is a process in which work is done to move heat. It was a closed-cycle that could operate continuously, as he described in his patent.
what are the six states of a refrigerant in a refrigeration cycle
The Carnot cycle is an idealized thermodynamic cycle that describes a perfect heat engine. In the Refrigeration system we need cooling effect.so it has to operate in opposite nature to produce the cooling effect. So we run the catnot cycle reversly in the refrigeration system. So we call the Refrigeration cycle called as REVERSED CARNOT CYCLE.
at compressor
suction filter
It is a refrigeration unit based on Vapour Absorption Refrigeration Cycle (typically refrigerants used are Water or Ammonia).
To return oil to the compressor.
Carnot Cycle is an ideal thermodynamic cycle that describes the functioning of a perfect heat engine. In the refrigeration system we need a cooling effect. So, in effect, refrigeration cycle is reverse in process than that of a carnot cycle, and ofcourse not ideal. Air-conditioners also run on the similar cycle as refrigerators.
The quantity of heat that each pound of refrigerant absorbs from the refrigerated space to produce useful cooling.
In practical applications, vapor-compression refrigeration systems are the most commonly used refrigeration systems, and each system employs a compressor. In a basic vapor compression refrigeration cycle as shown in Figure 3.28, four major thermal processes take place as follows: • evaporation, • compression, • condensation, and • expansion.
i think thermal energy and radiant energyPeAcE
Vapor compression in the refrigeration cycle is the process which turns heated vapor into a cold liquid. This allows the coolant to flow through the condenser and cool the air.