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Liquid refrigerant pumping in industrial refrigeration systems.

Author(s) : JEKEL T. B., REINDL D. T.

Type of article: Article, Review

Summary

This article introduced concepts that are distinctive to pumping refrigerants with centrifugal pumps. In industrial refrigeration systems, the use of centrifugal pumps for supplying low temperature liquid refrigerant to loads has become quite common. Although a simple concept, the successful design, installation, and operation of centrifugal liquid refrigerant pumps does require care and attention to a number of details. One of the most common operational problems fought in the field is refrigerant pump cavitation. In a number of installations, we have found the contributing or root cause to cavitation is the excess flow of liquid through the pump due to hand-expansion valves on individual evaporators being set too far open. When cavitation occurs, cooling capacity is lost and the likelihood of premature pump (or motor) failure increases. We hope this article helps you understand and troubleshoot potential problems that may exist in refrigerant pumping systems.

Details

  • Original title: Liquid refrigerant pumping in industrial refrigeration systems.
  • Record ID : 30002950
  • Languages: English
  • Source: ASHRAE Journal - vol. 53 - n. 8
  • Publication date: 2011/08

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