Heat Pump Modeling: A Progress Report

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Computer models of the performance of heat pumps and of individual components are described; preliminary results from system improvement studies using these models are presented. The system model which is based on the underlying physical principles, rather than empirical data, uses a calculational scheme used previously by Hiller and Glicksman. It is generalized so that it may be used to calculate performance and efficiency over a broad range of operating conditions. Its intended use is the investigation of changes in system performance brought about by,modifications of the individual components, and to aid in gaining detailed understanding of the interactions between ... continued below

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Ellison, R.D. July 18, 2001.

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Description

Computer models of the performance of heat pumps and of individual components are described; preliminary results from system improvement studies using these models are presented. The system model which is based on the underlying physical principles, rather than empirical data, uses a calculational scheme used previously by Hiller and Glicksman. It is generalized so that it may be used to calculate performance and efficiency over a broad range of operating conditions. Its intended use is the investigation of changes in system performance brought about by,modifications of the individual components, and to aid in gaining detailed understanding of the interactions between components. Examples of predicted improvements in performance based on the use of these programs are presented. New heat exchanger models, based on a tube-by-tube computational approach, may be used by the system model when appropriate. In these models, the thermal and fluid flow performance of each tube in the heat exchanger is computed individually using local temperatures and heat transfer coefficients. Tube circuiting sequences may be specified by the user, the joining or branching of parallel refrigerant circuits is accommodated, and appropriate mixing expressions are used. Air-side correlations for any surface geometry may be specified. Comparison of calculated and observed performance parameters for heat exchangers in our laboratory are shown.

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  • 4th Annual Heat Pump Technology Conference, Stillwater, OK (US), 04/09/1979--04/10/1979

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  • Report No.: P01-111318
  • Grant Number: AC05-00OR22725
  • Office of Scientific & Technical Information Report Number: 786338
  • Archival Resource Key: ark:/67531/metadc724818

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 18, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 24, 2016, 10:24 p.m.

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Ellison, R.D. Heat Pump Modeling: A Progress Report, article, July 18, 2001; Tennessee. (digital.library.unt.edu/ark:/67531/metadc724818/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.