Defrosting of Pump Circulated Ammonia Coolers

Star Standard Specification 104 - The object of this Standard Specification is to provide a circuit for the hot gas defrosting of ammonia coolers which will always work, even at low temperatures.

The specification has been updated to reflect the use of Refrigeration Specialties valves instead of the Stal AOB valve and more regular use of the hot gas line pressurisation valve and the post defrost pressure equalisation valves.

Author: Star Refrigeration