Describe The Process That Occurs In A Refrigerator

You will notice that it feels cold and this demonstrates that cooling occurs as the result of evaporation. Free Delivery on Major Appliance purchases 399 and up.

How Does The Refrigeration Cycle Work Ffd

The adiabatic flash evaporation process is isenthalpic occurs at constant enthalpy.

Describe the process that occurs in a refrigerator. By Nicole Sforza. In other words refrigeration is artificial human-made cooling. In most cases the evaporator is the coldest part of the fridge or the freezer.

This process called evaporation cools the surrounding area and produces the desired effect. It is a well known fact that heat flows in the direction of decreasing temperature ie from a high temperature region to a low temperature region. Updated September 19 2012.

The other food item is now contaminated with peanut allergens. Heat transfer from low to high temperature cannot occur by itself Claussius Definition of Second Law. Peanut satay sauce in a cracked container leaks onto another food item in the fridge.

As I have mentioned in the residential air conditioning section air conditioning the refrigeration cycle is a process that simply removes heat from an area that is not wanted and transfers that heat to an area that makes no difference. But the reverse process ie. In a refrigerator convection occurs through the use of refrigerant gases and a compressor.

Between points 5 and 1 the cold and partially vaporized refrigerant travels through the coil or tubes in the evaporator where it is totally vaporized by the warm air from the space being refrigerated that a fan circulates across the coil or tubes in the evaporator. Vapor compression refrigeration systems are used for a variety of coolingrefrigeration applications. You can test this process for yourself by taking some alcohol and putting a drop or two on your skin.

EXAMPLES OF HOW CROSS-CONTAMINATION CAN OCCUR IN A REFRIGERATOR. Food allergens are not destroyed by the cooking process. The air conditioner itself does not create heat it just transfers heat.

Here the refrigerant is cold and moves at a slower pace in order to absorb as much heat as possible from the load. Free Delivery on Major Appliance purchases 399 and up. When the hot gas in the coils meets the cooler air temperature of the kitchen it becomes a liquid.

Ad 18 month financing on Appliance and Geek Squad purchases 599. This process requires a special device. Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas.

Purpose of a refrigerator is the removal of heat called the cooling load from a low-temperature medium. Energy in the form of heat is removed from a low-temperature reservoir and transferred to a high-temperature reservoir. If that food item is prepared and served to a customer with a peanut allergy it could cause a life.

Ad 18 month financing on Appliance and Geek Squad purchases 599. The process is no different in your refrigerator its not coldness being brought into the appliance its heat being extracted from the items stored and expelled to the outside surroundings which explains why the back of a refrigerator is always warm. The vapor compression cycle circulates a fluid through a compressor condenser expansion valve and evaporator in order to absorb heat from a refrigerated space at a low temperature and give off heat at a higher temperature to the surroundings thus keeping the refrigerated space cool.

The term refrigeration means cooling a space substance or system to lower andor maintain its temperature below the ambient one while the removed heat is rejected at a higher temperature. It acts as a medium of exchange for heat from the stored products load to the refrigerant. The evaporator absorbs heat inside the refrigerator.

When we are interested in the heat energy removed from a low-temperature space the device is called a refrigerator. Convection is the process of heat transfer through the movement of matter usually a gas or a liquid. The compressor constricts the refrigerant vapor raising its pressure and pushes it into the coils on the outside of the refrigerator.

The purpose of a heat pump is the transfer of heat to a high-temperature medium called the heating load.

Refrigeration Process An Overview Sciencedirect Topics