Welcome to Open Science
Contact Us
Home Books Journals Submission Open Science Join Us News
Comparison between Natural and Hybrid Ventilation for Hot Climate by Using CFD
Current Issue
Volume 1, 2014
Issue 1 (March)
Pages: 1-7   |   Vol. 1, No. 1, March 2014   |   Follow on         
Paper in PDF Downloads: 21   Since Aug. 28, 2015 Views: 1515   Since Aug. 28, 2015
A. Rizk, Department of Architectural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt.
A. Al Deberky, epartment of Architecture, Faculty of Fine Arts, Minia University, Minia, Egypt.
N. Guirguis, Housing & Building Research Centre, Cairo, Egypt.
This paper presents mathematical study by using computer simulation program (ANSYS), in order to measure the effect of ceiling and wall fans in decreasing air temperature during night time in Aswan, Egypt (latitude 24° N), Where the indoor temperature exceeds the thermal comfort through overheated period. Heat gain of the high mass building during the day time increases the indoor temperature at the night time. As a result, the indoor temperature becomes higher than the outdoor temperature at the night time in summer. Simulation study for three experimental models according to ventilation conditions. The first model that depends on cross ventilation (cross ventilation model), the second model is hybrid ventilation that consists of natural ventilation (cross ventilation) and mechanical ventilation (ceiling fan), the third model is same as second model but using wall fan instead of ceiling fan. The boundary conditions are according to Aswan weather in overheated period. Simulation results of cross ventilation and hybrid ventilation models decreased indoor temperature from 5 ºC to 8.5 ºC in case of outdoor temperature is 27°C during night time, while indoor temperature is 38°C. The wall fan enhances indoor air flow more than the ceiling fan and air flow is well-distributed inside the room at sitting level.
Comfort Ventilation, Cross Ventilation, Ceiling and Wall Fans, Computational Fluid Dynamic (CFD), Aswan, Egypt
Aynsley, R.,Circulating Fans for Summer and Winter Comfort and Indoor Energy Efficiency, TEC25, 2007.
Arens ,E., Xu,T., Miura,K., Hui, Z.,Fountain,M., and Bauman,F., A study of occupant cooling by personally controlled air movement , Energy and Buildings, 1998.
Giovini, Passive and low energy cooling of buildings, Van Nostra d Reinhold, 1994, p.p.904-908.
Kadiri, The effectiveness of fan in enhancing comfort, Journal of applied science research, Vol: 2, 2006.
Evans, M. (1980)," Housing Climate and Comfort" , the Architectural Press, London, pp. 133
Energy-plus, Energy simulation Software, Weather Data.
Giovini. B,"Climate Consideration in Building and Urban Design", Van Nostrand Reinhold,1998, pp. 367
Abdalrazik M. (1999), "Climatic studies of Toshka and thermal performance evaluation for heavy mass buildings", Housing and Building Research Center, Cairo, Egypt.
Givoni, B., Man, climate and architecture, New York : Elsevier, 1969.
Open Science Scholarly Journals
Open Science is a peer-reviewed platform, the journals of which cover a wide range of academic disciplines and serve the world's research and scholarly communities. Upon acceptance, Open Science Journals will be immediately and permanently free for everyone to read and download.
Office Address:
228 Park Ave., S#45956, New York, NY 10003
Phone: +(001)(347)535 0661
Copyright © 2013-, Open Science Publishers - All Rights Reserved