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Validation d'une méthode d'essai basée sur la charge pour la caractérisation des performances des pompes à chaleur résidentielles en mode chauffage.

Validation of a load-based testing methodology for residential heat pump performance characterization in heating mode.

Numéro : 2524

Auteurs : DHILLON P., WELCH D., BUTLER B., HORTON W. T., BRAUN J. E.

Résumé

A load-based testing methodology has been developed to capture realistic system performance of heat pumps and air conditioners in a laboratory setting while operating under conditions comparable to field application. In this approach, a heat pump responds to a simulated virtual building model, and the dynamic performance of the test unit is measured with its embedded controls and thermostat. However, it is important to evaluate how adequately the load-based testing approach captures the overall dynamic performance of a test unit in a laboratory compared to a typical residential application. In this study, a 3-ton heat pump system was first tested in a 2-story house located within a large-scale environmental chamber with controllable ambient temperature and humidity conditions. During testing, the house was subjected to ambient loads resulting from different external conditions, and the heat pump responded to maintain the indoor temperature at the thermostat setpoint. Then, the same make and model unit was installed in psychrometric chambers and tested using the load-based testing methodology. In this paper, test unit heating mode performance and dynamic behavior comparisons are presented based on testing performed at the house and in the lab. Overall comparable COPs were measured in the lab and the residential house facility with the difference varying between -3% and 2%. However, differences in the test unit on/off cycling behavior were observed between the two test facilities.

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Pages : 12 p.

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Détails

  • Titre original : Validation of a load-based testing methodology for residential heat pump performance characterization in heating mode.
  • Identifiant de la fiche : 30030765
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 2022

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