Thermal comfort aspects of cold air distribution system

Masaki Shioya, Shinichi Tanabe, Noriyasu Sagara, Yuji Tsubota, Katsuhiro Miura, Ryuji Yanagihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An ice storage system can supply chilled water at approximately 0°C (32°F) to 4°C (39.2°F) to air-handling units. A cold-air distribution system supplies air between 8°C (46.4°F) and 10°C (50°F), 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. However, there are some concerns about the direct supply of cold air to occupied zones. 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, based on the manikin experiments. The results showed that air cooled to 7°C (44.6°F) and 8°C (46.4°F) caused no draft that annoyed occupants when used with conventional circular ceiling diffusers.

Original languageEnglish
Title of host publicationASHRAE Transactions
PublisherASHRAE
Pages61-72
Number of pages12
Volume101
EditionPt 2
Publication statusPublished - 1995
Externally publishedYes
EventProceedings of the 1995 ASHRAE Annual Meeting - San Diego, CA, USA
Duration: 1995 Jun 241995 Jun 28

Other

OtherProceedings of the 1995 ASHRAE Annual Meeting
CitySan Diego, CA, USA
Period95/6/2495/6/28

Fingerprint

Thermal comfort
Air
Ice
Experiments
Ceilings
Water supply
Fans
Water

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Shioya, M., Tanabe, S., Sagara, N., Tsubota, Y., Miura, K., & Yanagihara, R. (1995). Thermal comfort aspects of cold air distribution system. In ASHRAE Transactions (Pt 2 ed., Vol. 101, pp. 61-72). ASHRAE.

Thermal comfort aspects of cold air distribution system. / Shioya, Masaki; Tanabe, Shinichi; Sagara, Noriyasu; Tsubota, Yuji; Miura, Katsuhiro; Yanagihara, Ryuji.

ASHRAE Transactions. Vol. 101 Pt 2. ed. ASHRAE, 1995. p. 61-72.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shioya, M, Tanabe, S, Sagara, N, Tsubota, Y, Miura, K & Yanagihara, R 1995, Thermal comfort aspects of cold air distribution system. in ASHRAE Transactions. Pt 2 edn, vol. 101, ASHRAE, pp. 61-72, Proceedings of the 1995 ASHRAE Annual Meeting, San Diego, CA, USA, 95/6/24.
Shioya M, Tanabe S, Sagara N, Tsubota Y, Miura K, Yanagihara R. Thermal comfort aspects of cold air distribution system. In ASHRAE Transactions. Pt 2 ed. Vol. 101. ASHRAE. 1995. p. 61-72
Shioya, Masaki ; Tanabe, Shinichi ; Sagara, Noriyasu ; Tsubota, Yuji ; Miura, Katsuhiro ; Yanagihara, Ryuji. / Thermal comfort aspects of cold air distribution system. ASHRAE Transactions. Vol. 101 Pt 2. ed. ASHRAE, 1995. pp. 61-72
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