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Suction superheat is the heat added to the refrigerant above that required to change its state from liquid to vapour (as happens in the evaporator). This heat is added both in the evaporator, in the suction line and (where applicable) in the suction accumulator.

Discharge superheat is suction superheat plus heat of compression, and must be removed in the condenser before condensation, the change of state from vapour to liquid, can occur.


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Q: What is suction and discharge superheat?
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Where is suction and discharge s?

Answer: The terms suction and discharge are the terms refer to hydraulics. In hydraulics if the the liquid has to be lifted or pumped to the usage area the hydraulic pump will be used . This pump will have to functions that is first suction to lift the fluid and the discharge or delivery . The familiar words in pair are lift and discharge; suction and discharge. The specification of pump for these terms are suction head and discharge head.AnswerThe suction pressure refers to the pressure of the referigerant being "sucked" back into the compressor. The suction pressure is a critical variable in ensuring the accuracy of the refrigerant charge, along with the tepmerature of that line as well. The "superheat", or heat added to the vapor in that line can be monitored in this manner.You have not mention which suction pressure... Actually Where ever the suction is presented that pressure is called suction pressure.... and suction pressure in practical cases normally always less that atmospheric pressure and in case of delivery pressure it is oppositeSaying that suction pressure is " the pressure of the referigerant being "sucked" back into the compressor " is not accurate.Simply , the suction pressure of a pump is the absolute pressure of a fluid , measured at the inlet of the pump ( in your answer , the pump is the compressor , and the fluid is whatever refrigerant. )The discharge pressure , is the absolute pressure of the liquid measured at the outlet of the pump.Obviously, the discharge pressure is usually bigger than suction pressure.


Comparration diameter size of suction and discharge?

The diameter of the discharge line leaving the ac compressor would be smaller than the suction line, because the compressed gas in the discharge line is more dense.


Is the suction line the high side?

No, the liquid (discharge) line is the high pressure side. The suction line is the low pressure side.


Effect of moisture on thermostatic expansion valve?

None, a TXV operates by it's sensing bulb sensing superheat of the suction line as it exits the evaporator coil.


Why is used the balancing line in boiler feed pump and its direction of flow?

In boiler feed pumps usually the discharge pressure is 20 to 30 times tie suction Pressure so to protect the pump balancing line is given from discharge to suction.

Related questions

What happening when you are overcharging an air conditioning with freon?

discharge pressure is high, suction pressure is high superheat is low and subcooling is high.


High side is the suction or discharge?

Discharge side........


What is the superheat if the suction pressure is 60 psig and the suction line temperature is 40 degrees?

-5 something is wrong


Where is suction and discharge s?

Answer: The terms suction and discharge are the terms refer to hydraulics. In hydraulics if the the liquid has to be lifted or pumped to the usage area the hydraulic pump will be used . This pump will have to functions that is first suction to lift the fluid and the discharge or delivery . The familiar words in pair are lift and discharge; suction and discharge. The specification of pump for these terms are suction head and discharge head.AnswerThe suction pressure refers to the pressure of the referigerant being "sucked" back into the compressor. The suction pressure is a critical variable in ensuring the accuracy of the refrigerant charge, along with the tepmerature of that line as well. The "superheat", or heat added to the vapor in that line can be monitored in this manner.You have not mention which suction pressure... Actually Where ever the suction is presented that pressure is called suction pressure.... and suction pressure in practical cases normally always less that atmospheric pressure and in case of delivery pressure it is oppositeSaying that suction pressure is " the pressure of the referigerant being "sucked" back into the compressor " is not accurate.Simply , the suction pressure of a pump is the absolute pressure of a fluid , measured at the inlet of the pump ( in your answer , the pump is the compressor , and the fluid is whatever refrigerant. )The discharge pressure , is the absolute pressure of the liquid measured at the outlet of the pump.Obviously, the discharge pressure is usually bigger than suction pressure.


Discharge line temperature with increase in super heat?

As superheat increases, the discharge line temperature is likely to also increase. This is because superheat represents the temperature rise of the refrigerant vapor above its saturation temperature, which results in higher temperatures in the system. The discharge line temperature tends to follow the trend of superheat in the system.


Why would you have low discharge superheat?

low dish sper heat


What is the relationship between evaporator air flow and suction superheat?

air flow and liquid change of state


Comparration diameter size of suction and discharge?

The diameter of the discharge line leaving the ac compressor would be smaller than the suction line, because the compressed gas in the discharge line is more dense.


What is a pressure differential?

its pressure between suction and discharge flow...


How long the minimum discharge and suction pipe must be For small airconditioning unit eg1 2 TR?

how long discharge and suction pipe shuold be for small 1-2 TR airconditioning units?


How long the minimum discharge and suction pipe must be For small airconditioning unit eg1-2 TR?

how long discharge and suction pipe shuold be for small 1-2 TR airconditioning units?


What is the definition of reciprocating pump?

a pump consisting of a piston that moves back and forth or up and down in a cylinder. The cylinder is equipped with inlet (suction) and outlet( discharge) valves. On the intake stroke, the suction valves are opened, and fluid is drawn into the cylinder. On the discharge stroke, the suction valves close, the discharge valves open, and fluid is forced out of the cylinder.