[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(
)
高大空间建筑夏季喷口送风系统的吹风感分布
)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
- 高大空间建筑夏季喷口送风系统的吹风感分布
- 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
- 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.
- 为了研究高大空间建筑喷口送风系统的吹风感分布, 在大空间实验室中进行了夏季工况的实验测试, 得到了喷口高度为4 m时人体活动区域温度场、速度场和吹风感的分布.然后, 采用计算流体力学的方法对实验工况进行模拟计算.将室内垂直温度和冷吹风感分布的计算结果和实测数据进行对比验证, 结果显示吻合良好.在此基础上进行了不同喷口高度处工况的模拟计算, 通过分析3个工况下人体活动区域的吹风感和温度, 获得了较理想的送风工况.模拟结果显示, 喷口高度为5 m时吹风感分布较为理想, 温度场和速度场较为均匀.
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.
[7] de Dear R J, Fountain M E.Field experiments on occupant comfort and office thermal environments in a hot-humid climate[J].ASHRAE Trans, 1994, 100(2):457-475.
[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.