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Load-based testing to characterize the performance of air conditioning and heat pumping equipment.

Number: pap. 2709

Author(s) : PATIL A, HJORTLAND A., CHENG L., et al.

Summary

This paper presents a new load-based testing methodology for testing packaged and split air conditioning and heat pumping equipment in a realistic manner that captures interactions between the equipment’s controls and the building. Although this is particularly appropriate for variable-speed equipment, the methodology can also be applied for testing staged equipment. This load-based testing methodology has been developed in collaboration with the Canadian Standards Association (CSA) which aims to develop a new standard that can be used to better predict the seasonal performance of variable-speed units as compared to traditional steady-state test methodologies. The load-based methodology replicates actual building dynamics in psychrometric test chambers by continually updating the room temperature and humidity based on a simple virtual building load model. The paper presents the virtual building load model, discusses some convergence criteria needed to determine when the tests have converged since these tests operate differently as compared to traditional steady-state tests, and provides some example test results for both variable-speed and staged equipment.

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Pages: 12

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Details

  • Original title: Load-based testing to characterize the performance of air conditioning and heat pumping equipment.
  • Record ID : 30024720
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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