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Indoor temperature variations resulting from solar desiccant cooling in a building without thermal backup.

Author(s) : WHITE S. D., KOHLENBACH P., BONGS C.

Type of article: Article, IJR article

Summary

The performance of a once-through solar desiccant cooling system, for air-conditioning a commercial office space, was modelled using the TRNSYS computer simulation software package. The study particularly focused on the potential for designing and operating a desiccant cooling system, without any thermal backup provided to mitigate for intermittent solar availability in three Australian cities. Increasing (i) indirect evaporative cooler effectiveness; (ii) air flow to the office space; and (iii) solar collector area were all shown to reduce the frequency of high temperature events inside the building occupied space. In the warm temperate climate of Melbourne (and to a lesser extent Sydney), high ventilation rates enabled comfort conditions to be maintained at or near acceptable levels in the occupied space, without the use of a backup thermal source. The synergy between evaporative cooling and solar desiccant cooling, observed in the warm temperate climates, was not evident in the tropical Darwin climate, suggesting that the selected ventilation desiccant cooling cycle is not appropriate for tropical climates.

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Pages: 695-704

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Details

  • Original title: Indoor temperature variations resulting from solar desiccant cooling in a building without thermal backup.
  • Record ID : 2009-1758
  • Languages: English
  • Subject: Environment, General information
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 4
  • Publication date: 2009/06

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