Enhancing thermal energy efficiency of terminal reheat HVAC systems by coil-bypass

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

By-passing part of the air flowing through the cold coil of a terminal reheat HVAC system can significantly reduce the cooling and heating thermal energy use of such systems under partial load conditions. An analysis of two variants of the elementary terminal reheat system based on this concept shows that such systems can, under proper by-pass control operation, outperform even the variable air volume system in terms of thermal energy use. Simulation results are used to illustrate how thermal energy use of different systems vary under to illustrate under part load conditions, i.e., with outdoor temperature variation. The extent to which annual heating and cooling energy can be conserved by adopting such system variants is also highlighted by means of a case study example. The results suggest that these simple system modifications can have enormous thermal energy saving potential, not only under partial load conditions during summer in temperate locations, but also year-round in tropical locations.

Original languageEnglish (US)
Title of host publicationASME-JSES-JSME International Solar Energy Conference
Place of PublicationNew York, NY, United States
PublisherPubl by ASME
Pages475-482
Number of pages8
StatePublished - 1994
Externally publishedYes
EventProceedings of the 1994 ASME/JSME/JSES International Solar Energy Conference - San Francisco, CA, USA
Duration: Mar 27 1994Mar 30 1994

Other

OtherProceedings of the 1994 ASME/JSME/JSES International Solar Energy Conference
CitySan Francisco, CA, USA
Period3/27/943/30/94

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Reddy, T. A. (1994). Enhancing thermal energy efficiency of terminal reheat HVAC systems by coil-bypass. In ASME-JSES-JSME International Solar Energy Conference (pp. 475-482). Publ by ASME.