Share

IIR document

Efficiency of free cooling using latent heat storage integrated into the ventilation system of a low energy building.

Author(s) : ARKAR C., VIDRIH B., MEDVED S.

Type of article: Article, IJR article

Summary

This article presents the results of an investigation into the free cooling efficiency in a heavyweight and lightweight low energy building using a mechanical ventilation system with two latent heat thermal energy storages (LHTESs), one for cooling the fresh supply air and the other for cooling the re-circulated indoor air. Both LHTESs contain sphere encapsulated PCM (paraffin RT20). Using a developed and experimentally verified numerical model of the LHTES, the temperature response functions, based on the heat storage size, the air flow rates and the PCM's thermal properties, are established in the form of a Fourier series and empirical equations and used in the TRNSYS building thermal response model. Several mechanical ventilation, night cooling and free cooling operation modes were analysed and compared. It was found that the free cooling technique enables a reduction in the size of the mechanical ventilation system, provides more favourable temperatures and therefore enables better thermal comfort conditions, and in our studied case also fresh air for the occupants.

Available documents

Format PDF

Pages: 134-143

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Efficiency of free cooling using latent heat storage integrated into the ventilation system of a low energy building.
  • Record ID : 2006-3124
  • Languages: English
  • Subject: Environment
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 1
  • Publication date: 2007/01

Links


See other articles in this issue (21)
See the source

Indexing