Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 5 (Q.No. 8)
8.
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
Discussion:
16 comments Page 1 of 2.
Nvk said:
1 year ago
The correct answer is: Thermostatic expansion valve.
A thermostatic expansion valve (TXV) is a type of valve that maintains a constant degree of superheat at the end of the evaporator coil in a refrigeration system. It does this by regulating the flow of refrigerant into the evaporator coil based on the temperature of the refrigerant gas leaving the coil.
The TXV ensures that the refrigerant is superheated by a consistent amount, which is essential for the efficient and safe operation of the refrigeration system.
The other options are not accurate:
- Automatic expansion valve: This valve maintains a constant pressure difference between the high and low sides of the system, but does not directly control superheat.
- High-side float valve: This valve regulates the flow of refrigerant into the condenser coil based on the level of liquid refrigerant in the condenser.
- Low-side float valve: This valve regulates the flow of refrigerant into the evaporator coil based on the level of liquid refrigerant in the evaporator.
Note: TXVs are widely used in refrigeration systems, including air conditioning, refrigeration, and heat pump systems, to ensure efficient and reliable operation.
A thermostatic expansion valve (TXV) is a type of valve that maintains a constant degree of superheat at the end of the evaporator coil in a refrigeration system. It does this by regulating the flow of refrigerant into the evaporator coil based on the temperature of the refrigerant gas leaving the coil.
The TXV ensures that the refrigerant is superheated by a consistent amount, which is essential for the efficient and safe operation of the refrigeration system.
The other options are not accurate:
- Automatic expansion valve: This valve maintains a constant pressure difference between the high and low sides of the system, but does not directly control superheat.
- High-side float valve: This valve regulates the flow of refrigerant into the condenser coil based on the level of liquid refrigerant in the condenser.
- Low-side float valve: This valve regulates the flow of refrigerant into the evaporator coil based on the level of liquid refrigerant in the evaporator.
Note: TXVs are widely used in refrigeration systems, including air conditioning, refrigeration, and heat pump systems, to ensure efficient and reliable operation.
SHIVAPRASAD said:
7 years ago
In low side float valve, the valve opens as the level of the refrigerant drops in the evaporator, but in high side float valve, the valve opens when the level of the refrigerant increases in the chamber--answer D.
Shahid said:
6 years ago
Exactly, because the low side float valve only used in the flooded type evaporator, only fluid circulation has done in its. So, how to superheat at the end of the evaporator coil?
A. Mastur said:
1 decade ago
Hows come that the valve maintains constant degree in evaporator is low side float valve?
ABhi said:
8 years ago
Low side float valve is used to maintain a constant level of liquid answer C.
Deepak parjapati said:
7 years ago
Thermostatic expansion valve is the correct answer.
Sukhwant singh said:
3 years ago
The right answer is a thermostatic expansion valve.
Sunil Bishnoi said:
6 years ago
According to my knowledge the answer is C.
Harry said:
1 decade ago
Its Thermostatic expansion valve.
Umakant said:
9 years ago
The answer should be option C.
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