Heat load and indoor environment under the combined use of radiant cooling system and active chilled beam

Ryoya Furukawa, Jun Shinoda, Misa Imazu, Sayana Tsushima, Shin Ichi Tanabe, Hiroki Iwata

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

Abstract

Recent studies have shown that the heat load characteristics under radiant cooling are different compared with those under convection systems. Therefore, heat load calculation methods that simplify radiant heat transfer may not be suitable to radiant systems. In this study, an indoor environment was observed under a 24-h radiant cooling condition in order to examine the heat transfer of each surface. Each surface temperature was compared under only radiant cooling, radiant cooling and active chilled beam combination, and only active chilled beam conditions. The results showed that the use of the overall heat transfer coefficient was not appropriate for calculation under radiant cooling conditions during daytime. By using the results obtained from the experiment, calculations were carried out by the heat balance method and the obtained results were compared to those calculated by the equivalent temperature difference method. Thereby, it was determined that the heat balance method was more accurate.

Original languageEnglish
Title of host publication15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713826514
Publication statusPublished - 2018
Externally publishedYes
Event15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 - Philadelphia, United States
Duration: 2018 Jul 222018 Jul 27

Publication series

Name15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

Conference

Conference15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
Country/TerritoryUnited States
CityPhiladelphia
Period18/7/2218/7/27

Keywords

  • Heat balance
  • Heat flux
  • Heat load calculation
  • Radiant cooling
  • Radiant panel

ASJC Scopus subject areas

  • Pollution

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