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Is refrigerant leaving a compressor in a cars air conditioning system high pressure vapor high pressure liquid or low pressure vapor?
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∙ 12y ago
high pressure vapor
Wiki User
∙ 12y ago
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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.
How you Get petroleum?
by leaving a bunch of dead stuff under high pressure for a few million years.
What is something every person can do to reduce their carbon footprint?
turn off the lights when leaving the room Use the fan instead of air conditioning heat the house less in the winter
How does barometric pressure influence weather?
High pressure situations are generally associated with fair, sunny weather. As high pressure is an area of sinking air, and air tends to dry out as it sinks, leaving sunny skies.
What do you mean by transpiration with respect to transport in plants?
Water leaving the plant's leaves creates a pressure gradient whereby it sucks in water from the ground.
Refrigerant leaving a compressor is?
superheat gas
Is refrigerant superheated when leaving the evaporator?
Refrigerant is superheated when leaving the evaporator so that the compressor is not getting liquid along with the gas, becauseÊliquid can cause damage the compressor.
What state is refrigerant leaving receiver?
low pressure liquid
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.
How does an air conditioning system work?
An air conditioning system works in a cycle. One side of the system is considered the high pressure side and the other side is considered the low pressure side. The air condition compressor can be viewed as the center line between these "sides" of the system. Refrigerant R-12 or R-134a (the most common types of refrigerant used in mobile A/C systems) remains at rest in the components an lines of the system until you turn on your A/C. At that point the electromagnetic clutch on the compressor engages and draws refrigerant (in a gas/liquid form) into it to be pumped throughout the system. Upon leaving the compressor the refrigerant has been compressed and thereby heated up resulting in it being transformed into a gaseous state. The refrigerant then travels into the condenser which removes heat from the refrigerant in an effort to return it to a liquid form. From the condenser the refrigerant will often pass through an expansion valve or an orifice (the other component in the system which divides the high an low pressure "sides") where it it "metered" to change it from High pressure on the compressor outlet side to low pressure. After the expansion valve the refrigerant moves into the evaporator. The evaporator is the component that actually removes heat from the air being forced through it by your vehicle's blower fan which pushes "cooled" or "conditioned" air through your vents. From the evaporator, the refrigerant (now mostly in gas form again) travels through a reciever-drier with removes moisture caused by condensation (which may have resulted from the heating and cooling of the refrigerant) before it returns once again to the compressor to repeat the cycle.*Note:R-12 and R-134A have very low boiling points and can be utilized in a liquid for due to the internal pressure of the A/C system.R-12 is no longer produced to the CFCs and their environmental impact.The A/C compressor's electromagnetic clutch is also engaged when using a "defrost" function in most vehicles.There are high and low pressure sides of the system, the condenser is on the high side and the evaporator is on the low side.Components include:CompressorCondenserExpansion valve/ orificeEvaporator/ blower motorReciever-drier
What is the difference air compressor and gas compressor?
1.The compressors used for compressing the other gases and air are independent entities. This means they merely compress the gas or air and supply it for the suitable applications. They have no direct connection with any other type of machine, though lots of machines and equipments depend on the compressed air or gas. The refrigeration and the air conditioning compressors are a part of the complete vapor compression cycle that comprises of additional components like the condenser, expansion valve and the evaporator. If the compressor is removed from this cycle, the refrigeration process will cease to exist.Main function of the compressor: The main function of the other compressors is to merely compress the gas or air. The refrigerant compressor compresses the refrigerant to the pressure corresponding to the saturation pressure higher than the temperature of the naturally available air or water. This enables the cooling of the refrigerant in the condenser by the available atmospheric air or water.Further, the refrigerant compressor also circulates the refrigerant through the whole cycle. The refrigerant after leaving the compressor is forced to the condenser, the expansion valve, and the evaporator and then it is sucked by the compressor for compression and recirculation though the whole cycle.3) Capacity Determination: The capacity of the refrigerating compressor determines the capacity of the whole refrigerating or air conditioning plant. The capacity of the air or gas compressor doesn't determine the capacity of the other plants. For instance, though the pneumatic tool depends on the compressed air for its operation, it has its own capacity.4) Relation to the other equipments: The refrigerating compressor is integral part of the cycle that includes other components of the cycle like condenser, expansion valve, and the evaporator. The working and proper functioning of each of these components depend on the working of other components. If the refrigeration compressor breaks down the whole system will collapse. There is no such dependency in case of the other compressors. If the air or gas compressor breaks down, the standby compressor can be started easily.
What state of refrigerant leaving the receiver of a refrigerant system?
Liquid
What is an evaporator and what does it do?
The evaporator is the heat exchanger in the dashboard duct-work that gets cold when the A/C cycle is running. A warm liquid refrigerant under pressure expands across the "expansion valve" as it enters the evaporator, and becomes a (very) cold gas. Cabin air or outside air (recirc or ventilate) blows through the other side of the evaporator eat exchanger with the aid of fans, transfers cabin heat to the "evaporator" and the evaporates (boils at a very low temperature) the coolant. Air leaving the evaporator and coming through the ducts is now cold and the refrigerant gas leaving the evaporator is "warm". The whole cycles contains the following major devices. 1) The refrigerant compressor, run by the engine of the car by belt, (with a clutch so it can be switched off and on as required0 2) The condenser, a heat exchanger usually mounted in front of the radiator that transfer heat from the refrigerant to the air. 3) The receiver ( a small reservoir) that holds a small amount of refrigerant and usually has some form of drier chemical in it to absorb moisture (if present) in the refrigerant. It sometimes has combined pressure and temperature switches mounted on it. 4) The expansion valve and tube, warm liquid expands into a cold gas and enters the evaporator. 5) The evaporator is the heat exchanger that absorbs the heat from the cabin air and boils the refrigerant So the cycle, more or less is, starting at the compressor suction (low side); Compressor, compresses warm gas at a low pressure to a hot gas at a high pressure, send to condenser. Condenser, cools a hot gas at a high pressure and it condenses it to a warm liquid at a high pressure, send to expansion valve. Expansion Valve, expands the high pressure warm liquid to a low pressure cold gas, send to evaporator. Evaporator, transfers heat (from the air) to the low pressure cold gas and warms that to a low pressure warm gas, send to compressor.
How does HVAC work?
HVAC works with four major parts; The compressor, which is the heart of the system. An Evaporator, which abosorbs heat the form the structure. Third the condenser, which releases heat from inside and puts it in a place where it makes not difference, usely outside. Lastly the Metering device, which seperates the high and low side of the system. We will start at the compressor which pushes the refrigerant to the condenser at high pressure. In that process the refrigerant heated up do to the compression, the reason for going to the condenser is so the heat from compression and heat from in the house can be released. After the heat has been released and refrigerant is condensed it moves to the metering device which depending on how old your system is can be multiple devices we will just say it is a very small hole so normal people will understand. As the refrigerant is leaving the metering device it is now turning into liquid as well as going down in pressure. when it reaches the evaporater this liquid boils off back into vapor becaus in the evaporater it absorbs heat from the house. now it travels back to the compressor now fully vapor to be compressed and sent around again.
How do you calculate the heat of compression for an air compressor?
enthalpy of air leaving the compressor minus enthalpy of air entering the compressor
Should you leave your refrigerator on if it has a freon leak?
There are two ways to answer this question Technically : if the leak is into the system where the pressure is low ( low side ) , leaving it on will make the remaining refrigerant last longer , where as if it is on the part of the system where the pressure is high , it will escape faster , but on the other hand the motor inside the sealed refrigerant compressor need some ways to cool itself since it generate heat , and this is accomplished with the cool refrigerant gazes coming back to it after the completion of the cooling process ... this is to say that if you have a leak on the low side of the system , and you make a choice to leave the appliance on , you will eventually burn the motor inside the compressor , so you are far better to have somebody fix the leak before you get more problems ... note that this is also true for a lot of refrigeration equipment using sealed compressors like your home central air conditioning system and many others !Practically : Say you decide to stop it for a little while till you get somebody to fix it , it is good practice to keep the doors open to prevent the remaining humidity to turn into mushrooms and mold and contaminating the appliance with a smell that maybe there for a long time to come ... even after you put in back into operation . And this bring a new question into my mind : what good is it to have a refrigerator if it is stop ?
What is chiller approach temperature?
Evaporator Approach is the difference between the evaporating refrigerant temperature - measured at the well in the evaporator -and leaving chilled water temperature.Take all readings with the water cooled chiller at full load.Condenser Approach is the difference between the liquid refrigerant temperature - as measured on the liquid line - and leaving condenser water temperature.
