The Dynamic Thermal Comfort Index Analysis under the Air Supply Vent Coupled with the Cross-Flow

Lihui Wang, Xinhui Bai, Rui Chen, Jianshun Zhang

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

2 Scopus citations

Abstract

In thermal environment where occupants stopover, the air supply jet easily dynamical changes due to some cross-flow interferences, influencing the dynamic human thermal comfort. RWI and PD are selected as the human dynamic thermal comfort indexes here. Based on the theory analysis on RWI and PD, the supply air temperature can be increased by improving the velocity in some extends. This will bring obvious energy saving of the air conditioning system. For example, based on RWI and PD within dynamic thermal comfort range, the supply air temperature could be 32°C with air velocity between 0.6-4 m/s. Experimental studies on the RWI and PD characteristics beneath the vent are developed, affected by the unstable cross-flow. According to the experimental results of typical testing points under the vent in vertical direction and horizontal direction at 1.5 m height, the values of RWI and PD are close to the comfort zone coupling with the dynamic cross-flow and the dynamic thermal comfort below the air conditioning vent is improved.

Original languageEnglish (US)
Title of host publicationProcedia Engineering
PublisherElsevier
Pages544-551
Number of pages8
Volume121
DOIs
StatePublished - 2015
Event9th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2015 Joint with the 3rd International Conference on Building Energy and Environment, COBEE 2015 - Tianjin, China
Duration: Jul 12 2015Jul 15 2015

Other

Other9th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2015 Joint with the 3rd International Conference on Building Energy and Environment, COBEE 2015
CountryChina
CityTianjin
Period7/12/157/15/15

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Keywords

  • Air supply
  • Cross-flow
  • Dynamic thermal comfort
  • PD
  • RWI

ASJC Scopus subject areas

  • Engineering(all)

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