[1] Cai Ning, Huang Chen, Cao Weiwu,. Draft sensation distribution of air jet supply systemin large space building in summer [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 246-248. [doi:10.3969/j.issn.1003-7985.2010.02.022]

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Draft sensation distribution of air jet supply systemin large space building in summer()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 2

Page:

246-248

Research Field:

Energy and Power Engineering

Publishing date:

2010-06-30

Info

Title:

Draft sensation distribution of air jet supply systemin large space building in summer

Author(s):

Cai Ning¹;  Huang Chen¹;  Cao Weiwu²

¹School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
²College of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Keywords:

computational fluid dynamics;  draft sensation;  air jet supply;  thermal comfort

PACS:

TU83

DOI:

10.3969/j.issn.1003-7985.2010.02.022

Abstract:

To study the draft sensation distribution of an air jet supply system in a large space building in summer, experiments are conducted in a large laboratory.The temperature, velocity and draft sensation distributions at a nozzle height of 4 m in the occupied zone are obtained.Then, the numerical simulation under the test condition is carried out by the computational fluid dynamics(CFD)method.The calculation results of the indoor vertical temperature and the draft sensation distribution are validated by the test data.Simulations with different nozzle heights are conducted.The satisfactory air supply condition is determined by analyzing the draft sensations and the temperatures in the occupied zone under three conditions.The simulation results show that the optimal draft sensation distribution and the uniform temperature and velocity fields can be obtained at a nozzle height of 5 m.

References:

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[2] Harbara G, Christa K, Ulrike G.The impact of draught related to air velocity, air temperature and workload[J].Applied Ergonomics, 2001, 32(4):407-417.
[3] Gan Guohui.Numerical investigation of local thermal discomfort in offices with displacement ventilation[J].Energy and Buildings, 1995, 23(2):73-81.
[4] Xia Y Z, Zhao R Y, Niu J L.Effect of turbulence intensity on human thermal sensation in isothermal environment[J].Journal of Tsinghua University:Science and Technology, 2000, 40(10):100-103.(in Chinese)
[5] Fountain M E.Laboratory studies of the effect of air movement on thermal comfort:a comparison and discussion of methods[J].ASHRAE Trans, 1991, 97(1):863-873.
[6] Fanger P O, Melikov A K, Hanzawa H, et al.Air turbulence and sensation of draught[J].Energy and Buildings, 1988, 12(1):21-39.
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[8] Huang C.Built environment[M].Beijing:China Machine Press, 2005:235-237.(in Chinese)

Memo

Memo:

Biographies: Cai Ning(1981—), male, graduate;Huang Chen(corresponding author), female, doctor, professor, huangc@usst.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.50478113), the Leading Academic Discipline Project of Shanghai Municipal Education Commission(No.J50502).
Citation: Cai Ning, Huang Chen, Cao Weiwu.[J].Draft sensation distribution of air jet supply system in large space building in summer Journal of Southeast University(English Edition), 2010, 26(2):246-248.

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