A refrigeration unit will tend to short cycle when operating （）.

A、A.under heavy loads

B、B.during hot gas defrost

C、C.under light loads

D、D.during starting conditions

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更多“A refrigeration unit will tend to short cycle when operating （）.”相关的问题

第1题

[单选题] Before charging a refrigeration unit, the refrigerant charging lines should be（）

A、flushed with clean refrigerant oil B、purged with the refrigerant C、washed with an ammonia and alcohol solution D、grounded to compressor

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第2题

[单选题] Before charging a refrigeration unit, the refrigerant charging lines should be（）

A、flushed with clean refrigerant oil B、purged with the refrigerant C、washed with an ammonia and alcohol solution D、grounded to compressor

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第3题

[单选题] A centrifugal compressor’s purge recovery unit（）

A、reclaims water B、purges air without losing refrigerant C、purges air with some loss of refrigerant D、purges lube oil from the refrigerant

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第4题

[] In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by （）.

A、A.increasing refrigerant pressure in the coil B、B.increasing chilled water flow through the cooler C、C.sub-cooling the refrigerant in the condenser D、D.superheating the refrigerant in the compressor

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第5题

[单选题] The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to （）.

A、secure and tag the electrical circuit B、place a crow bar in the flywheel of the unit C、inform all persons in the area not to start the unit D、make a log book entry