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Thermal comfort aspects of cold air distribution system.

Author(s) : SHIOYA M., SAGARA N., MIURA K., TANABE S. I., TSUBOTA Y., YANAGIHARA R.

Summary

An ice storage system can supply chilled water at approximately 0 to 4 deg C to air-handling units. A cold-air distribution system supplies air between 8 and 10 deg C, which is cooled with the chilled water from an ice storage tank, directly into an air-conditioned space. The system allows large temperature differentials, enabling a considerable reduction in initial and running costs for distribution equipment such as fans and air-handling units. Draft is one of the major concerns with direct cold air diffusion. The authors conducted draft evaluation experiments with a thermal manikin and also conducted experiments with subjects to prove the manikin results, especially under the best and worst diffusion conditions. The results showed that air cooled to 7 and 8 deg C caused no draft that annoyed occupants when used with conventional circular ceiling diffusers.

Details

  • Original title: Thermal comfort aspects of cold air distribution system.
  • Record ID : 1996-3640
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/06/24
  • Document available for consultation in the library of the IIR headquarters only.

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