Output details

Refrigerant flow instability as a means to predict the need for defrosting the evaporator in a retail display freezer cabinet

The paper describes a novel defrost methodology for retail freezers as part of an international study involving many partners. Often such cabinets are defrosted 3-4 times per day using energy intensive electric heaters. This paper demonstrates the use of refrigerant flow instability in determining when a defrost is required to reduce energy used. The methodology was practically proven to save 20-30% of the energy used by a freezer and has been applied commercially by JTL (Mike Lawrence, mike.lawrence@jtl.co.uk).