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Starting with liquid refrigerant:
- The pump pushes the refrigerant, under pressure, through an orifice
- The refrigerant sprays through the orifice into the low pressure side of the system
- The refrigerant flashes to vapor and absorbs heat from the coils of the evaporator
- The heat-laden refrigerant vapor moves into the condenser where the heat is dumped to the atmosphere and the refrigerant condenses to a liquid
- The liquid enters the pump and begins the cycle again.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoA 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.
Wiki User
∙ 13y agoit 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.
Wiki User
∙ 14y agoThe refrigerator keeps the food you store it cold. It saves the food so it doesn't go to waste.
Wiki User
∙ 13y agoNothing
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Bell Coleman Cycle it is the air refregeration cycle?
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.
Advantages and disadvantages of using technology in refrigeration?
what are the advantages and disadvantages of refrigeration
What are the importance of refrigeration?
the importance of refrigeration because when the heat is exesrted from lower temperature to higher temperture
What is the difference between gas power cycles and vapour power cycles?
Vapor-compression cycle(See Heat pump and refrigeration cycle and Vapor-compression refrigeration for more details)The vapor-compression cycle is used in most household refrigerators as well as in many large commercial and industrial refrigeration systems. Figure 1 provides a schematic diagram of the components of a typical vapor-compression refrigeration system.Figure 1: Vapor compression refrigerationThe thermodynamics of the cycle can be analyzed on a diagram[11][12] as shown in Figure 2. In this cycle, a circulating refrigerant such as Freon enters the compressor as a vapor. From point 1 to point 2, the vapor is compressed at constant entropy and exits the compressor as a vapor at a higher temperature, but still below the vapor pressure at that temperature. From point 2 to point 3 and on to point 4, the vapor travels through the condenser which cools the vapor until it starts condensing, and then condenses the vapor into a liquid by removing additional heat at constant pressure and temperature. Between points 4 and 5, the liquid refrigerant goes through the expansion valve (also called a throttle valve) where its pressure abruptly decreases, causing flash evaporation and auto-refrigeration of, typically, less than half of the liquid.Figure 2: Temperature-Entropy diagramThat results in a mixture of liquid and vapor at a lower temperature and pressure as shown at point 5. The cold liquid-vapor mixture then travels through the evaporator coil or tubes and is completely vaporized by cooling the warm air (from the space being refrigerated) being blown by a fan across the evaporator coil or tubes. The resulting refrigerant vapor returns to the compressor inlet at point 1 to complete the thermodynamic cycle.The above discussion is based on the ideal vapor-compression refrigeration cycle, and does not take into account real-world effects like frictional pressure drop in the system, slight thermodynamic irreversibility during the compression of the refrigerant vapor, or non-ideal gas behavior (if any).More information about the design and performance of vapor-compression refrigeration systems is available in the classic Perry's Chemical Engineers' Handbook.[13]Vapor absorption cycleMain article: Absorption refrigerator In the early years of the twentieth century, the vapor absorption cycle using water-ammonia systems was popular and widely used. After the development of the vapor compression cycle, the vapor absorption cycle lost much of its importance because of its low coefficient of performance (about one fifth of that of the vapor compression cycle). Today, the vapor absorption cycle is used mainly where fuel for heating is available but electricity is not, such as in recreational vehicles that carry LP gas. It is also used in industrial environments where plentiful waste heat overcomes its inefficiency.The absorption cycle is similar to the compression cycle, except for the method of raising the pressure of the refrigerant vapor. In the absorption system, the compressor is replaced by an absorber which dissolves the refrigerant in a suitable liquid, a liquid pump which raises the pressure and a generator which, on heat addition, drives off the refrigerant vapor from the high-pressure liquid. Some work is needed by the liquid pump but, for a given quantity of refrigerant, it is much smaller than needed by the compressor in the vapor compression cycle. In an absorption refrigerator, a suitable combination of refrigerant and absorbent is used. The most common combinations are ammonia (refrigerant) and water (absorbent), and water (refrigerant) and lithium bromide[absorbent].
How do reverse cycle air conditioner work?
A reverse cycle air conditioner work like normal air conditioners only in reverse, transferring heat into a house instead of outside of one. It is not an air conditioner at all, but a heater.
Refrigeration can be described as?
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?
what are the six states of a refrigerant in a refrigeration cycle
Why refrigeration cycle is called reverse carnot 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.
Where is the maximum temperature in refrigeration cycle?
at compressor
Which is not a basic component of the compression refrigeration cycle?
suction filter
What is Vapour absorption machine?
It is a refrigeration unit based on Vapour Absorption Refrigeration Cycle (typically refrigerants used are Water or Ammonia).
What is the function of an oil separator in refrigeration cycle?
To return oil to the compressor.
Explain the reverse carnot cycle and from them go to ac?
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.
What is the net refrigeration effect in the refrigeration cycle?
The quantity of heat that each pound of refrigerant absorbs from the refrigerated space to produce useful cooling.
How do you improve the performance of vapor compressor refrigeration cycle?
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.
What are the energy changes that occur during the refrigeration cycle?
i think thermal energy and radiant energyPeAcE
What are the four basic components in the vapor compression refrigeration cycle?
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.
