0
Does refrigerant enter the compressor as a low temperature low pressure gas?
Wiki User
∙ 16y ago
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.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
Does refrigerant enter evaporator as a liquid in a direct expansion evaporator?
It will, in basically all cases be a mixture of liquid and vapor, which means the refrigerant is saturated but with a few bubbles entering the evaporator. In a properly operating system though entering the metering device should be solid liquid and some sub-cooling (sub-cooled means cooler then saturation and therefore= no vapor) but then through the metering device (TXV, cap tube, orifice) some of the liquid will boil off, which is called flash gas, in order to cool the refrigerant down as saturated temperature goes down (the pressure to boiling point relation, as pressure is reduced boiling point is lowed). The amount of flash gas is directly related to the specific heat of the refigernt (BTUs/lb), the number of degrees you are cooling the refrigerant (eg. 95 to 45), and the latent heat of vaporization (BTUs/lb for change of state. liquid to vapor)
What is a T and P valve for electric water heater?
A T and P valve (Temperature and Pressure valve) is a safety device used in electric water heaters. It is designed to release excess pressure and temperature from the tank to prevent the tank from rupturing or exploding. When the temperature or pressure reaches a certain level, the T and P valve opens to release the excess pressure and temperature, allowing the heater to operate safely.
How do you reset the temperature and pressure valve for electric water heaters?
The T and P valve is the temperature and pressure valve that is used on hot water tanks as a safety device. The temperature rating is up to 210 degrees F and a water pressure up to 150 psig. (pound force per square inch gauge) before the safety valve trips to relieve water and lower the pressure inside the tank. When the safety valve trips it allows cooler water to enter the tank to cool off the hot water that tripped the valve in the first place. The valve is usually located on the outflow of the tank as the temperature probe has to be located within 6 inches from the top of the tank where the water temperature will be the hottest. The valve is self resetting as soon as the pressure is reduced or the temperature lowers to below the set point of the valve.
Is the velocity of a fluid related to its temperature As in if a fluids velocity while moving through a pipe increases does its temperature increase?
Usually as a fluid moves through a pipe, it will warm up as kinetic energy and pressure is transformed to thermal energy via internal friction within the fluid and friction between the fluid and the walls. It should be noted however that as fluids enter constrictions and then expands out on the other side where pressure is much less, the temperature may actually drop while the fluid velocity increases . This phenomena is commonly observed in the functioning of refrigerators.
What causes a plastic bottle when filled with hot water to contract when a lid is placed on the top?
We have to assume that the lid does not allow air to enter the plastic bottle. When the water is hot, the air above the water is also hot. When the air cools down, its volume decreases significantly. This, in turn, causes the pressure in the bottle to decrease such that atmospheric pressureis greater than the pressure inside the bottle. This causes the bottle to contract since the force exerted on the bottle due to atmospheric pressure is greater than the force exerted on the bottle due to the air pressure inside the bottle. The volume of the bottle decreases until the pressure of the air inside becomes equal to atmospheric pressure. The changes in volume, pressure and temperature can be explained by the equation pV=nRT, where p:pressure of gas V:Volume occupied by gas n:number of moles of gas R:molar gas constant T:Thermodynamic temperature of the gas
What is liquid slugging of the compressor?
Large quantities of liquid refrigerant enter the compressor and then mix with the lubricating oil in the compressors sump.
When do you put the freon or refrigerant in 2004 Chrysler intrepid 2.7L?
Freon or refrigerant is put in a 2004 Chrysler Intrepid 2.7L by locating the low pressure inlet near the rear of the engine compartment. A can of refrigerant is then connected to the line and allowed to enter the system until the desired pressure is reached.
What is the discharge line on an air conditioner?
Discharge line is the line in which the refrigerant passes through after being discharged by the compressor. Liquid line is the line located after the condenser, following refrigeration cycle. Suction line is the one that the referigerant is sucked :) in, to enter the compressor.
Ac high pressure switch on a 97 Ford Taurus?
before you enter compressor it is "t"'d to pipe has 4 harness wires
Where is the sensor located to restart the AC compressor on your 1995 Lincoln Town Car it is low on freon and when you try to add a can of R134 the compressor shuts off and will not accept the freon?
I really don't know waht you mean by a sensor to restart the system. There isn't any such thing. The clutch cycling switch is a pressure switch that cuts off the compressor as the pressure on the low-side of the sytem cycles low during normal operation, or when the sytem has a low charge. But this switch is not something you reset. It automatically closes itself, when the system pressure comes up enough to trip it, usually about 20 or 25 pounds of pressure. If you cant it to take a charge, you have another problem. Make sure your cahrhging hose is actually depressing the shrader vavle(looks like a tire valve) in the charging port to allow refrgerant to enter the system. Or you may have a problem with the tool you are using to charge up the system, or you may have a restriction in the system. Also, is charging the system really the issue? Is refrigerant getting in, but the compreesor dosent engage? Could it be that the system has refrigerant, but an electrical problem is causing the compressor to not turn on?
AC won't blow cold air but compressor seems to be spinning in 10 second intervals but no cold air tried to recharge it but the guage said its full?
That sounds exactly like a low pressure shut down to me. Perhaps the gauge is wrong, did you test the high and low pressure sides? Those sets are set to test the low pressure side only, a professional set will do both, as you put refrigerant into the system it is common for the pressure to give a false high reading until the system stabilizes, especially if you let liquid r134 enter, the can should always be upright, allow the refrigerant to flow into the system on it's own, the pressure in the can is higher than the system is so it will take it as it equalizes. Try it again, I think it will take more.
How do you put compressor oil in a 2000 Kia Sephia?
Compressor lubricant is mixed in with the freon and will enter the system when it is recharged
What is a Turbo?
Short for turbocharger, It is an exhaust driven air compressor. Exhaust gases exit the engine and enter the turbine housing where it spins the turbine wheel. The turbine wheel is connected to a shaft which the compressor wheel is also attached. When more power is needed, the turbine/compressor wheel assembly spins faster and the compressor wheel sucks in more air and compresses it creating boost/positive manifold pressure/more power.
Does it ruin an air conditioner when used as a heater?
If you mean using a window AC and installing it backwards so it rejects heat indoors, no and yes, no it does not initially, however as an AC unit has no defrost cycle, eventually the outdoor coil will frost and require defrosting, if this is not done, conceivably liquid refrigerant could enter the compressor and damage it.
Does refrigerant enter evaporator as a liquid in a direct expansion evaporator?
It will, in basically all cases be a mixture of liquid and vapor, which means the refrigerant is saturated but with a few bubbles entering the evaporator. In a properly operating system though entering the metering device should be solid liquid and some sub-cooling (sub-cooled means cooler then saturation and therefore= no vapor) but then through the metering device (TXV, cap tube, orifice) some of the liquid will boil off, which is called flash gas, in order to cool the refrigerant down as saturated temperature goes down (the pressure to boiling point relation, as pressure is reduced boiling point is lowed). The amount of flash gas is directly related to the specific heat of the refigernt (BTUs/lb), the number of degrees you are cooling the refrigerant (eg. 95 to 45), and the latent heat of vaporization (BTUs/lb for change of state. liquid to vapor)
What type of pressure causes to enter the venous side of the capillary?
Osmotic pressure...
What is the use of a compressor limiter?
The use of a compressor limiter is to lower the volume of loud noises and to amplify quiet ones. You can get more information about this at the Wikipedia. Once on the website, type "Compressor limiter" into the search field at the top of the page and press enter to bring up the information.
