机房内管道阻力损失为沿程阻力加局部阻力5.89kPa，由可知制冷机组蒸

The resistance loss of the pipeline in the machine room is the resistance along the way plus the local resistance of 5.89kPa. It can be seen that the resistance loss of the evaporator of the refrigeration unit is 47kPa, and the resistance loss of the whole water processor is about 29kPa; the most unfavorable loop resistance loss at the end of the building air conditioner is about 117kPa, Then the safety factor of the chilled water pump head is:

The loss of pipeline resistance in the engine room is 5.89kPa of the flow resistance plus local resistance, the resistance loss of the evaporator of the known refrigeration unit is 47kPa, the resistance loss of the whole water processor is about 29kPa, and the most adverse loop resistance loss at the end of the building air conditioning is about 117kPa, then the freezing water pump is considered for safety factor after consideration of safety factors.

The resistance loss of the pipeline in the machine room is the resistance along the way plus the local resistance of 5.89kpa. It can be seen that the resistance loss of the evaporator of the refrigeration unit is 47kpa, and the resistance loss of the water processor in the whole process is about 29kpa; the most unfavorable resistance loss of the loop at the end of the building air conditioner is about 117kpa, then the head of the refrigeration pump is considered as the safety factor<br>