Name:
2974 -- Shortening the Defrost Time on a Heat-Pump Air Conditioner PDF
Published Date:
1986
Status:
Active
Publisher:
ASHRAE
Methods to shorten the defrost time on a heat pump air conditioner were studied. The experiment was carried out using a one horsepower heat pump, and the energy balance during defrosting was analyzed. We found that the following methods are effective to shorten the defrosting time: (1) increase in power input to the compressor during defrosting, (2) utilization of the compressor for energy storage, and (3) reduction of the water left on the outdoor heat exchanger.
A heat pump with the new defrosting system was constructed on an experimental basis. Its defrost time was 1 minute and 55 seconds under the defrost condition of Japanese Industrial Standard. The defrost time of a conventional heat pump is about 4 or 5 minutes.
Units: SI
| File Size : | 1 file , 890 KB |
| Note : | This product is unavailable in Russia, Belarus |
| Number of Pages : | 10 |
| Product Code(s) : | D-PO-86-2974 |
| Published : | 1986 |
