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Typically refrigerant overcharge or poor heat transfer which can be due to poor air flow ( dirty filter, dirty indoor blower fan, dirty evaporator [indoor] coil, etc.). Carryover can also result in a properly operating system if there is not enough load, for example if the thermostat is set too low and the conditioned space temperature gets too low.
What else can I help you with?
How is the suction valve unloading piston on a standard type positive displacement air compressor operated?
air operated- spring return
Why NRV directly after pump disch?
NRV is Non Return Valve which is prevents to liquid flood back to the suction line over the impeller or other else.
What are Major components of pneumatics?
All pneumatic systems start with an aircompressor. This compressor is usually rigged with a electronic pressure switch, which shuts the compressor off once the system has reached pressure. The compressor uses an accumulator to store additional compressed air in reserve in case the amount of air required by the system exceeds the compressor's output. Both of these components are connected to an air regulator, which reduces the combined compressor and accumulator output pressure to the desired psi (usually pressure gauges are placed before and after the regulator). This resulting air feed is then connected to a series of mechanical or electric solenoids (air valves). Two lines run out of each solenoid, each connects to an opposite side of the pneumatic piston (s) that the solenoid controls. When triggered, the solenoids direct the air into the front or back of the piston depending on the desired direction of the piston. Return air from the opposite side of the piston is usually vented. This results in the pneumatic pistons emitting a hissing sound whenever they are moved.
What is example of Whitworth quick return mechanism?
Whitworth quick return mechanism is a device where reciprocation motion in forward stroke is slower then the return stroke.
What are the advantages and disadvantages of Quick return mechanism?
advantages of quick return mechanism
What is the excess heat removed by condenser?
The excess heat removed by a condenser is the heat absorbed by the refrigerant in the evaporator plus the heat of compression in the compressor. The condenser releases this heat to the outside environment, allowing the refrigerant to return to its liquid state.
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 function of condenser fan motors in HVAC systems?
The function of condenser fan motors in HVAC systems is to help dissipate heat from the refrigerant in the condenser unit, allowing the refrigerant to cool down and return to a liquid state for the cooling process to continue efficiently.
What causes the air return not to pull air and unit to freeze up?
The evaporator coil is starving for refrigerant. Basically what is happening is the refrigerant pressure/temperature is low enough to cause the humidity in the air to freeze on the evaporator coil. This cause a air restriction, hence insufficient to no indoor air flow. Usual common cause is a low charge of refrigerant or a restriction in the metering device, although not the only possible causes.
Can you install a 3.5 ton condenser on a 3 ton evaporator?
Installing a 3 1/2 ton condenser on a 3 tr evaporator will not function properly. There isn't enough evaporator coil surface area to absorb heat and vaporize refrigerant liquid for its return back to the condenser compressor. What can be done is a 3 ton condenser unit with a 3 1/2 evaporator coil.
If you replaced your compressor less than 90 days ago and the unit doesn't work again if the entire unit is replaced can you reuse the compressor or return it?
You cannot return the compressor unless it is the reason your system is not working. No need to reuse the compressor as you will have a brand new unit anyway.
How does heat transfer through the condenser?
Heat transfer through the condenser occurs as the hot refrigerant vapor releases heat to the surrounding air or water, causing it to condense into a liquid state. This heat transfer process removes the heat from the refrigerant, allowing it to return to a cooler temperature and continue the refrigeration cycle.
What is the function of an oil separator in refrigeration cycle?
To return oil to the compressor.
Why would a 1990 Ford Crown Victoria not have voltage to the air conditioning compressor?
Check the low pressure sensor. That is usually on the "dryer", the largish tank that is usually near the firewall and on the low pressure "return" side of the AC line. If there is not enough pressure on the low side, the compressor is not supposed to turn on. Usually when the compressor doesn't have voltage to the clutch it means that you're low on refrigerant. To test it, find the low pressure sensor, pull the connector, make a little jumper wire then briefly turn on the AC. The compressor will turn on if you're refrigerant level is just low. Make sure you don't leave the jumper on, you could damage your compressor if you don't have coolant and oil in the line. In addition to the above I have had several of these sensors (switches) fail on my wife's 91 Colony Park. They are about $25 (in Canada) and easy to change without tools. Just unscrew the old one and screw in the new with the same effort that you used to remove the old. There is a Shrader valve behind which is supposed to prevent the loss of the refrigerant when the sensor is removed.
Can you install a window air conditioner flat on its back through a hole in your cabin floor?
That I know of... You won't get along with that for long. I think the compressor is positioned a certain way, so that the coolant can return in a liquid state to be recirculated.
How does an air cooled chiller work?
The air cooling of a chiller signifies , the cooling of radiator. in a chiller the compressor compressors the gas which on expansion cools in side Copper tubes causing the chilling effect. The refrigerants get heated up when compressed in a compressor. this heated refrigerant is cooled by blowing air in air cooled chillers. There are also water cooled chillers.
How does liquid water return to the atmosphere?
Evaporation
