Effect of MRT variation on the energy consumption in a PMV-controlled office

Dong Hwa Kang, Paek Hyoun Mo, Dong Hee Choi, Seung Yeong Song, Myoung Souk Yeo, Kwang Woo Kim

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

This paper investigates the energy-saving potential of a thermal comfort-controlled office building. A comparative simulation study between the thermal comfort control and conventional thermostatic control is conducted on a building with glass façades where changes in the outdoor temperature and solar radiation over the course of a day affect radiant temperature and thus thermal comfort. To evaluate the thermal performance in the comfort-controlled space, a PMV-based thermal comfort controller, which adjusts the set-point room temperature of the existing thermostatic controller according to the changes of environmental variables, is assumed. The results demonstrate that thermal comfort competes with energy saving in a conventional thermostatic-controlled space. However, it is suggested that thermal comfort control provides consistent thermal comfort as well as energy-saving effect. The results show that energy consumption in a thermal comfort-controlled space is more affected by a change in the mean radiant temperature than in the conventional thermostatic-controlled space. The energy-saving potential in the thermal comfort-controlled space increases with low mean radiant temperature conditions. Although the energy-saving potential is reduced under high mean radiant temperature conditions, it is suggested that thermal comfort control is still a reasonable strategy to achieve both thermal comfort and energy savings simultaneously.

Original languageEnglish
Pages (from-to)1914-1922
Number of pages9
JournalBuilding and Environment
Volume45
Issue number9
DOIs
StatePublished - Sep 2010

Keywords

  • Energy saving
  • Mean radiant temperature
  • PMV
  • Thermal comfort control

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