Abstract
An energy efficient method of defrosting the evaporator on a frozen retail display cabinet was developed and its performance compared with that of the existing electric defrost. The cabinet was modified so that either defrost system could be deployed, leaving the rest of the system operation untouched. Performance of the cabinet during EN23953 standard tests was compared. Total energy consumption during the tests was 40% lower with the novel defrost. This was partly due to elimination of the use of electrical defrost power (which reduced direct electrical power by 39%). Since the system leads to lower liquid refrigerant temperatures at the expansion valve there is a saving in compressor power for the same refrigeration effect and as the defrost is quicker, the temperature excursions inside the cabinet are smaller, reducing the amount of heat which has to be removed after a defrost. The cabinet can also be run at a higher evaporating temperature, further reducing energy consumption.
| Original language | English |
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| Publication status | Published - 2 Apr 2013 |
| Event | 2nd IIR Conference on Sustainability and the Cold Chain, Paris, 2013 - Duration: 4 Feb 2013 → … |
Conference
| Conference | 2nd IIR Conference on Sustainability and the Cold Chain, Paris, 2013 |
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| Period | 4/02/13 → … |
