Experimental validation of heat exchanger models for refrigerator-freezers.
Author(s) : ADMIRAAL D. M., BULLARD C. W.
Summary
Separate experiments with a condenser and an evaporator showed that changes in refrigerant-side heat transfer coefficients produced variations in overall heat transfer resistance of up to 20% over a wide range of operating conditions. An extensively instrumented refrigerator was used to gather air- and refrigerant-side temperature, pressure, power, and refrigerant mass flow measurements to provide in situ calorimetry for 95 operating conditions. These operating conditions included three different refrigerator charges that provide a variety of evaporator and condenser outlet conditions. Accounting for the variation in refrigerant-side heat transfer coefficients produced better results than assuming that the heat transfer coefficients were constant. The variable-conductance models developed here can be used to predict changes in performance resulting from the use of alternative refrigerants and different heat exchanger tube dimensions.
Details
- Original title: Experimental validation of heat exchanger models for refrigerator-freezers.
- Record ID : 1996-1595
- Languages: English
- Source: ASHRAE Transactions.
- Publication date: 1995/01
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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- Author(s) : KAWAMOTO A.
- Date : 1987/08/24
- Languages : English
- Source: Development in refrigeration, refrigeration for development. Proceedings of the XVIIth international Congress of Refrigeration.
- Formats : PDF
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- Author(s) : HARA T., et al.
- Date : 1991/08/10
- Languages : English
- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
- Formats : PDF
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- Date : 1993
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- Author(s) : DING G., CHEN Z.
- Date : 1992/07/14
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Measurement of refrigerator component performance.
- Author(s) : REEVES R. N., BULLARD C. W., CRAWFORD R. R.
- Date : 1994
- Languages : English
- Source: ASHRAE Transactions 1994.
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