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A methodology for mapping the performance of air-to-air heat recovery ventilators using laboratory tests.

Number: 2592

Author(s) : MA J., HORTON W. T., BRAUN J. E.

Summary

Air-to-air heat recovery ventilators (HRVs) can significantly reduce heating and cooling loads due to ventilation, especially for applications that have high fresh air requirements. Considering the expected growth in the utilization of HRV equipment due to concerns about virus transmission in buildings, it is important to have accurate methods to characterize their energy performance for use in selecting equipment for a specific building and location. However, current testing and rating standards that are based on laboratory testing do not provide a generalized methodology to fully characterize the energy performance of HRV units. In this paper, a methodology for
characterizing the performance of an integrated HRV unit using laboratory testing is presented. The overall HRV unit performance mapping approach involves the use of a model for each component in an HRV unit that is trained using a limited amount of 8 laboratory test data points. The overall approach was  validated using 40 experimental data points that were obtained over a wide range of operating conditions. To demonstrate practical use of the resulting HRV performance model that integrates all component models, overall recovered energy and a Coefficient of Performance (COP) were estimated for fixed indoor conditions over a range of outdoor conditions that are typical for cooling and heating dominated climates (Phoenix in AZ and Duluth in MN).

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  • Original title: A methodology for mapping the performance of air-to-air heat recovery ventilators using laboratory tests.
  • Record ID : 30030786
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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