Low compressor head pressure in a refrigeration system can be caused by().
- Ainsufficient condenser cooling water
- Bexcessive condenser cooling water
- Cair in the refrigeration system
- Dexcessive refrigerant in the system
Low compressor head pressure in a refrigeration system can be caused by().
1、If the head pressure of a reciprocatin
If the head pressure of a reciprocating refrigeration compressor is excessive, ().Athe relief valve should open before the high pressure cutout...
2、High firing pressures and a low exhaus
High firing pressures and a low exhaust temperature in a diesel engine may result from ().Adecreased piston to cylinder head clearanceBincreased exhaust system back pressureCearly fuel injection timingDlow scavenge air temperature
3、The circulation around a low pressure
The circulation around a low pressure center in the Northern Hemisphere is().AcounterclockwiseBvariableCclockwiseDanticyclonic
4、Low compression pressure in a diesel e
Low compression pressure in a diesel engine may be the result of ()Ainsufficient fuel supply due to fuel pump valves sticking or leakingBexce...
5、Either a low injection pressure or a l
Either a low injection pressure or a leakage of piston rings is able to lead ().Aa high exhaust temperatureBa high smoky exhaustCa high outputDa high compressio
6、The low pressure side of a refrigerati
The low pressure side of a refrigeration system is considered to exist from the ().Aexpansion valve to the compressorBreceiver to the expansion coilCexpansion valve to the evaporatorDcondenser to the expansion valve