10.1186/2251-6832-4-45

Integration of evaporative cooling technique with solar chimney to improve indoor thermal environment in the New Assiut City, Egypt

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  • Amr Sayed Hassan Abdallah*1,
  • Hiroshi Yoshino2,
  • Tomonobu Goto2,
  • Napoleon Enteria2,
  • Magdy M Radwan3,
  • M Abdelsamei Eid3,
  1. Department of Architecture, Assiut University, Assyut, EG Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JP
  2. Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JP
  3. Department of Architecture, Assiut University, Assyut, EG
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Published in Issue 2013-12-17

How to Cite

Abdallah, A. S. H., Yoshino, H., Goto, T., Enteria, N., Radwan, M. M., & Eid, M. A. (2013). Integration of evaporative cooling technique with solar chimney to improve indoor thermal environment in the New Assiut City, Egypt. International Journal of Energy and Environmental Engineering, 4(1 (December 2013). https://doi.org/10.1186/2251-6832-4-45
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Abstract

Abstract Cooling buildings in summer is one of the main environmental problems for architects and occupants in many hot dry countries. The summer temperature during these countries reaches peaks of more than 40°C in some. Mechanical air conditioners can solve the problem, but they put a heavy strain on the electricity consumption. Egypt in general has rich sunny and clear skies. Therefore, these conditions encourage to enhance evaporating with natural ventilation and save energy. This paper develops an integration of direct evaporative cooling tower with a solar chimney multi-zone thermal ventilation model. Simulation is done using commercial couple multi-zone airflow under COMIS-TRNSYS software (Madison, WI, USA) to assess natural ventilation and indoor thermal comfort. The results show that the system generates 130.5 m 3 /h under the effect of solar radiation only and minimum 2 ACH without pressure coefficient which is considered the minimum requirement of ACH. The findings show that the new integrated system interacts with the building envelope and weather conditions to achieve a decrease in indoor temperatures that reach 10°C to 11.5°C compared to outdoor temperatures.

Keywords

  • Passive cooling,
  • Solar chimney,
  • Integration system,
  • TRNSYS-COMIS,
  • Multi-zone models
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