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Using low-load chillers to improve system efficiency.

Author(s) : SCHWEDLER M., KARKI K. C.

Type of article: Article

Summary

The obvious approach to system design is to ensure that the building peak loads can be met. The thoughtful engineer will apply further consideration to the part-load conditions of the building. Design -load conditions typically happen only a handful of hours throughout the year, if at all. Reflecting on this, it only makes good sense to further refine your system design so it operates as efficiently as possible at part-load conditions. This article will examine the use of low-load chillers, but not in a "swing" application. It does so first by comparing energy use of a system design prevalent in 1999 with a system using a low-load chiller. Second, it compares a design commonly used in 2016 to three energy-saving options. Energy analysis of both hospital and office building applications will be done for seven different climate zones. This article does not cover return on investment (ROI) since installation and operating costs vary significantly.

Details

  • Original title: Using low-load chillers to improve system efficiency.
  • Record ID : 30025206
  • Languages: English
  • Source: ASHRAE Journal - vol. 59 - n. 2
  • Publication date: 2017/02

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