Indoor thermal comfort and energy efficiency of various air-conditioning schemes for museum buildings

Gaoming Ge, Fu Xiao, Shengwei Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

In museum buildings, air conditioning systems with precise thermal-hygrometric control of indoor environment are necessary for preventing degradation of artworks and providing a pleasant thermal environment for visitors. In traditional constant air volume (CAV) systems widely used in museums, the supply air is often cooled and then reheated for dehumidification without over-cooling conditioned spaces during warm and humid seasons. The cooling and reheating processes are energy-intensive. This paper presents a new air conditioning scheme for indoor thermal environment control in museums. The scheme integrates a dedicated outdoor air system (DOAS) with a CAV system. Control strategies are also developed for independent indoor temperature and humidity controls. Simulation tests are conducted to compare performances of a CAV system and the integrated system on the platform of TRNSYS. These two schemes are: (1) a CAV system with separate temperature and humidity controls by cooling-reheating; (2) a DOAS-integrated CAV system with independent indoor temperature and humidity controls. Simulation results show that the DOAS-integrated system is more energy efficient. It consumes about 60% less electricity than the CAV system with cooling-reheating on the test day. The DOAS-integrated scheme can also achieve satisfactory indoor thermal comfort considering the space temperature and relative humidity (RH). Both schemes can provide good indoor air quality measured by CO2 concentration.
Original languageEnglish
Title of host publicationIBPSA 2009 - International Building Performance Simulation Association 2009
Pages2236-2242
Number of pages7
Publication statusPublished - 1 Dec 2009
Event11th International IBPSA Conference - Building Simulation 2009, BS 2009 - Glasgow, United Kingdom
Duration: 27 Jul 200730 Jul 2007

Conference

Conference11th International IBPSA Conference - Building Simulation 2009, BS 2009
CountryUnited Kingdom
CityGlasgow
Period27/07/0730/07/07

Keywords

  • Air-conditioning
  • Building energy efficiency
  • Humidity control
  • Museum
  • Temperature control

ASJC Scopus subject areas

  • Computer Science Applications
  • Building and Construction
  • Architecture
  • Modelling and Simulation

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