Raising evaporative cooling potentials using combined cooled ceiling and MPCM slurry storage

Xichun Wang, Jianlei Niu, A. H.C. van Paassen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

74 Citations (Scopus)

Abstract

Evaporative cooling is able to generate the cooling medium at a temperature approaching to the ambient wet bulb temperature. In this paper, a low-energy air-conditioning strategy is proposed, which is a combination of cooled ceiling (CC), microencapsulated phase change material (MPCM) slurry storage and evaporative cooling technologies. The assessment of evaporative cooling availability and utilization is done for five representative climatic cities, including Hong Kong, Shanghai, Beijing, Lanzhou and Urumqi in China, and the energy saving potential of the proposed air-conditioning system is analyzed by using a well validated building simulation code. The results indicate that the new system offers energy saving potential up to 80% under northwestern Chinese climate and up to 10% under southeastern Chinese climate. The optimal design method of the slurry storage tank is also proposed based on the slurry cooling storage behaviors and cooling demand variations of the ceiling panels.
Original languageEnglish
Pages (from-to)1691-1698
Number of pages8
JournalEnergy and Buildings
Volume40
Issue number9
DOIs
Publication statusPublished - 2 Jun 2008

Keywords

  • Cooled ceiling
  • Evaporative cooling
  • Hybrid system
  • MPCM slurry
  • Thermal energy storage

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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