Question

A reciprocating refrigeration compressor is controlled in response to the water temperature leaving the water chiller. If the thermostat used for compressor control did not have a wide enough differential, what would be the probable result?

1) Inadequate time for oil to return to the compressor
2) Stop on high-pressure cutout
3) Stop on low-pressure cutout
4) A very long operating cycle

Answer 1

If the thermostat used for compressor control in a reciprocating refrigeration compressor does not have a wide enough differential, the probable result would be a very long operating cycle.

Step-by-step explanation:

If the thermostat used for compressor control in a reciprocating refrigeration compressor does not have a wide enough differential, the probable result would be a very long operating cycle. A wide differential in the thermostat means that the compressor will turn on and off at larger temperature differences, allowing the compressor to operate more frequently. This ensures that the oil has enough time to return to the compressor and that the compressor is properly lubricated. However, if the thermostat has a narrow differential, the compressor may have a long operating cycle, leading to inadequate time for the oil to return to the compressor. This can result in insufficient lubrication and potential damage to the compressor.