Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30184
Fenestration Effects on Cross Ventilation for a Typical Taiwanese School Building When Applying Wind Profile

Authors: Wei-Hwa Chiang, Hao-Hsiang Hsu, Jian-Sheng Huang

Abstract:

Appropriate ventilation in a classroom is helpful for enhancing air exchange rate and student concentration. This study focuses on the effects of fenestration in a four-story school building by performing numerical simulation of a building when considering indoor and outdoor environments simultaneously. The wind profile function embedded in PHOENICS code was set as the inlet boundary condition in a suburban environment. Sixteen fenestration combinations were compared in a classroom containing thirty seats. This study evaluates mean age of air (AGE) and airflow pattern of a classroom on different floors. Considering both wind profile and fenestration effects, the airflow on higher floors is channeled toward the area near ceiling in a room and causes older mean age of air in the breathing zone. The results in this study serve as a useful guide for enhancing natural ventilation in a typical school building.

Keywords: Cross ventilation, Fenestration effect, Wind profile, Mean age of air, CFD

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1070045

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1590

References:


[1] V. Straaten, Thermal Performance of buildings, Amsterdam: Elsevier, 1967.
[2] W.H Chiang, C.J. Wu, K.Y. Weng, and L.D. Yang, "The effects of façade design on cross-ventilation for Taiwanese classroom," ASHRAE Transactions, vol.111, pp.333-339, Jun. 2005.
[3] E. Prianto and P. Depecker, "Optimization of architectural design elements in tropical humid region with thermal comfort approach," Energy and Buildings, vol.35, no.3, pp.273-280, Mar. 2003.
[4] S. S. Ayad, "Computational study of natural ventilation," Wind engineering and industrial aerodynamics, vol.82, no.1-3, pp.49-68, Aug. 1999.
[5] C.C. Hsu and T.K. Huang, The plane of module size for dwelling house and school building, Taiwan: Architecture and Building Research Institute, Ministry of the Interior, 1991.
[6] C.Y. Liou, The appropriate size of building materialÔÇö the cases of alumina door and window, and brick on building fa├ºade, Master thesis of National Cheng-Kung University, 1991.
[7] W.I. Li, the study of the influence on students as teacher-s personality, Mater thesis of National Cheng-Chi University, 1998.
[8] M. Santamouris and D. Asimakopoulos, Passive cooling of building, UK: James & James, 1996.
[9] S. Kato, S. Murakami, T. Takahashi, and T. Gyobu, "Chained analysis of wind tunnel test and CFD on cross ventilation of large-scale market building," Wind Engineering and Industrial Aerodynamics, vol.67-68, pp.573-587, Apr.-Jun. 1997.
[10] G.C. Graca, Q. Chen, L.R. Glicksman, and L.K. Norford, "Simulation of wind-driven ventilation cooling systems for an apartment building in Beijing and Shanghai," Energy and Buildings, vol.34, no.1, pp.1-11, Jan. 2002.
[11] Z. Zhai, S.D. Hamilton, J. Huang, C. Allocca, N. Kobayashi, and Q. Chen, "Integration of indoor and outdoor airflow study for natural ventilation design using CFD," in Conf. Proceedings of the 21st AIVC Annual Conf. on Innovations in Ventilation Technology, Netherlands, 2000.
[12] J. Seifert, Y. Li, J. Axley, and M. Rösler, "Calculation of wind-driven cross ventilation in buildings with large openings," Wind Engineering and Industrial Aerodynamics, vol.94, no.12, pp.925-947, Dec. 2006.
[13] J. Franke, A. Hellsten, H. Schl├╝nzen, and B. Carissimo, "Best practice guideline for the CFD simulation of flows in the urban environment." COST Action 732: Quality assurance and improvement of microscale meteorological models, 2007.
[14] T. Karimipanah, H.B. Awbi, M. Standberg, and C. Blomqvist, "Investigation of air quality, comfort parameters and effectiveness for two floor-level air supply systems in classrooms," Building and Environment, vol.42, no.2, pp.547-655, Feb. 2007.
[15] H.B. Awbi, "Chapter7-ventilation," Renewable and Sustainable Energy Reviews, vol.2, pp.157-188, 1998.
[16] ASHRAE, ASHRAE Handbook Fundamentals, 2005, chapter 27: ventilation and infiltration.
[17] "Air change rates for typical rooms and buildings" in http://www.engineeringtoolbox.com/air-change-rate-room-d_867.html.
[18] ASHRAE, ASHRAE Standard 62-1989: Ventilation for acceptable indoor air quality, Atlanta, GA, 1989.
[19] V. Chanteloup and P.S. Mirade, "Computational fluid dynamics modeling of mean age of air distribution in forced-ventilation food plants." Journal of Food Engineering, vol.90, no.1, pp.90-103, Jan. 2009.
[20] X. Li, D. Li, X. Yang, and J. Yang, "Total air age: an extension of the air age concept," Building and Environment, vol.38, no.11, pp.1263-1269, Nov. 2003.