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Does refrigerant enter the compressor as a low temperature low pressure gas?
Yes. The basic components of the refrigeration system are the refrigerant, compressor, condenser and receiver, expansion device and the evaporator. One cycle: Refrigerant travels to Compressor (A) to Condenser (B) to Expansion device (C) to evaporator (D). The refrigerant gas at low pressure and temperature is drawn into the compressor. The gas is compressed to a higher pressure, which causes an increase in the temperature. The refrigerant gas at a high pressure and temperature passes to the condenser (point B), where it is cooled (the refrigerant gives up its latent heat) and then condenses to a liquid. The high pressure, low temperature liquid is collected in the receiver. The high pressure liquid is routed through an expansion valve (point C), where it undergoes an abrupt reduction in pressure. That pressure reduction causes part of the liquid to immediately vaporize or flash. The vapor and remaining liquid are cooled to the saturation temperature (boiling point) of the liquid at the reduced pressure. At this point most of the refrigerant is a liquid. The boiling point of the liquid is low, due to the low pressure. When the liquid refrigerant enters the evaporator (point D), it absorbs heat from the process and boils. The refrigerant gas is now at low pressure and temperature, and enters the suction side of the compressor, completing the cycle.
When charging an r12 system with freeze12 should you charge with gas or liquid?
if system is empty, u need to charge with correct amount of oil and refrigerant. the oil actually carries the refrigerant in the system if just recharging, buy the refrigerant that has oil already added, these are available at most auto stores
What is the function of a condensor?
Refrigerant enters the condenser as a high pressure vapor. In the condenser, the heated refrigerant is cooled by transferring its heat to the air which passes through the condenser fins, and it changes state to a liquid during this time.
What is the component of a refrigeration system which changes a high pressure vapor to a high pressure liquid?
A brief discussion of the operating vapor-compression cycle is helpful to indicate other potential refrigeration problems in real systems. In the basic cycle, slightly subcooled refrigerant leaves the condenser at high pressure and flows into the liquid receiver if one is present. The refrigerant then enters the throttling device (capillary tube, TXV, etc.) where the pressure is dropped. It then enters the evaporator as a two-phase mixture (liquid and vapor) and evaporates or boils at low temperature, adsorbing heat. Slightly superheated refrigerant vapor exits the evaporator and enters the suction line accumulator, if one is present (used to trap any transient liquid slugs). The refrigerant vapor then enters the compressor where the pressure and temperature are increased as the compressor compresses the refrigerant vapor. The vapor leaving the compressor is superheated, and the compressor discharge is the hottest point in the cycle. This refrigerant is cooled and condensed in the condenser where heat is rejected, and the refrigerant is condensed to liquid. Refrigerant actually leaves the condenser slightly subcooled (subcooled liquid) to assure condensation has been complete. Any non-condensable vapors in the system will be unable to condense in the condenser and will appear as gas bubbles in the condensed liquid stream. These non-condensables may collect in the condenser and displace refrigerant from the condenser heat exchanger, thereby reducing the effective surface area of the condenser.The compressor changes the low pressure vapor to high pressure vapor sending it threw the condenser to cool and turn it back into liquid.
What is the natural form of the element neon?
Usually a gas, neon is also available as a pressurized liquid. Neon gas is used in red lights used as exit signs or illuminated advertising signs, TV picture tubes, lasers, and voltage testers. Liquid neon is used as a refrigerant in cryogenics.
Which part of car is made up of gas?
Automotive shocks and struts are charged with Nitrogen gas. Automotive air condition systems are charged with r134a refrigerant gas.
What are two changes of state of the refrigerant necessary to operate the refrigerator?
gas to liquid and liquid to gas
What does a car condensor do?
It cools the liquid refrigerant after it is compressed from gas to a liquid from the compressor.
Why is refrigerant vapor re introduced to the refrigeration system before refrigerant liquid?
To endure that the ONLY gas in the system is refrigerant.
What happened to the refrigerant in the condenser?
The Refrigerant enters the condenser as a high pressured gas, the condenser then condenses that gas and changes it to a liquid form.
When the refrigerant passes through the metering device some of it starts to flash from a liquid to a gas?
when the refrigerant passes through the metering device, some of it starts to flash from a liquid to a gas because
When the refrigerant passes through the metering device some of it starts to flash from a liquid to a gas because?
when the refrigerant passes through the metering device, some of it starts to flash from a liquid to a gas because
What device causes the refrigerant to undergo transition from a liquid to gas?
evaporator
What is refrigerant after it leaves compressor liquid or vapor?
super heated gas.
Which phase changes does a refrigerant undergo?
'liquid to gas' at the internal cooling site (expansion) and 'gas to liquid' transition at the compressor site.
Why do refrigerants trun from liquid to gas?
This is because as the liquid passes through the refrigerator, it absorbs the heat from the food in the fridge. Therefore as heat is transferred from the food to the refrigerant, the following happen: - The temperature of the food falls - the temperature of the refrigerant rises. Thus, a higher temperature would change the refrigerant from liquid to gas.
The device in a refrigeration system that causes the refrigerant to go from a liquid to a gas is the?
Condensor
