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Experimental investigation of defrost using a warm liquid refrigerant.
Author(s) : GAGE C., KAZACHKI G.
Summary
The paper reports the results from laboratory tests of a low-temperature supermarket refrigeration system with two open and two reach-in display cases. Tests were performed at condensing temperatures ranging from 10 to 40 °C and at an evaporating temperature of 34 °C. The performance of the system with warm-liquid defrost was compared against the system with electric defrost at the same test conditions. The results confirmed the ability of the warm liquid refrigerant to complete defrost at condensing temperatures above 15-20 °C. At lower condensing temperatures, the refrigerant tends to migrate from the receiver into the suction accumulator. For comparable defrost times, the product temperature rise during warm-liquid defrost was less than for electric defrost, indicating a potential for improved product integrity. No energy benefits were observed for the defrost time of one hour.
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Details
- Original title: Experimental investigation of defrost using a warm liquid refrigerant.
- Record ID : 2004-2203
- Languages: English
- Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
- Publication date: 2003/08/17
Links
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Indexing
-
Warm liquid defrosting for supermarket refriger...
- Author(s) : MEI V. C., CHEN F. C., DOMITROVIC R. E., et al.
- Date : 2002/01/12
- Languages : English
- Source: ASHRAE Transactions. 2002 Winter Meeting, Atlantic City, New Jersey. Volume 108, part 1 + CD-ROM.
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El descarche en los muebles frigoríficos.
- Date : 2003/12
- Languages : Spanish
- Source: Frío Calor Aire acondicionado - n. 354
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Lo sbrinamento nei mobili frigoriferi.
- Author(s) : LA TORRE C.
- Date : 2002/02
- Languages : Italian
- Source: Industria italiana del Freddo - vol. 56 - n. 1
View record
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Five defrost methods for commercial refrigeration.
- Author(s) : RAINWATER J. H.
- Date : 2009/03
- Languages : English
- Source: ASHRAE Journal - vol. 51 - n. 3
View record
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Defrost issues in indirectly refrigerated displ...
- Author(s) : HRNJAK P. S.
- Date : 2001/06/24
- Languages : English
- Source: ASHRAE Transactions. 2001 annual Meeting, Cincinnati, Ohio. Volume 107, part 2 + CD-ROM.
View record