Numerical Simulation of Air Conditioning System Based on the Solar Chimney Concept

Document Type : Original Article

Authors

1 Department of Mechanics, Payame Noor University, PO BOX 19395-3697, Tehran, Iran

2 Mechanical Engineering Department, Engineering Faculty of Shahrekord University, Shahrekord, Iran

Abstract

Solar chimneys are classified as a passive way of using solar power to provide a comfortable atmosphere inside buildings without requiring any mechanical devices. In this study, the use of solar chimneys to generate a steady air flow inside the building in order to reduce the temperature and increase the air quality was investigated. To reduce the temperature, the evaporative cooling by spraying small droplets of water into the air is used. To achieve this aim, a three-dimensional geometry of the structure of a real building was simulated by numerical simulation fluid flow and energy equations were numerically simultaneously. The results obtained for the air by installation of a solar chimney with an average area of 12 in a 60 building with an average radiation of 600 , the air temperature can be reduced to 23 and its relative humidity can reach 50%. The results obtained are in good agreement with the reported results available in the literature.

Keywords

References

  1. Zaniani, J.R., et al., Design and optimization of heating, cooling and lightening systems for a residential villa at Saman city, Iran. Journal of Engineering, Design and Technology, 2018.
  2. Mostafaeipour, A., et al., Energy efficiency for cooling buildings in hot and dry regions using sol-air temperature and ground temperature effects. Journal of Engineering, Design and Technology, 2019.
  3. Almutairi, K., et al., Techno-economic investigation of using solar energy for heating swimming pools in buildings and producing hydrogen: a case study. Frontiers in Energy Research, 2021: p. 171.
  4. Deng, S., R.a. Wang, and Y. Dai, How to evaluate performance of net zero energy building–A literature research. Energy, 2014. 71: p. 1-16.
  5. Zaniani, J.R., et al., Examining the possibility of using solar energy to provide warm water using RETScreen4 software (Case study: Nasr primary school of pirbalut). Current World Environment, 2015. 10(Special Issue): p. 835.
  6. Jahangiri, M., et al., Electrification of a tourist village using hybrid renewable energy systems, Sarakhiyeh in Iran. Journal of Solar Energy Research, 2018. 3(3): p. 201-211.
  7. Daghigh, R., Assessing the thermal comfort and ventilation in Malaysia and the surrounding regions. Renewable and sustainable energy reviews, 2015. 48: p. 681-691.
  8. Moein, M., et al., Finding the minimum distance from the national electricity grid for the cost-effective use of diesel generator-based hybrid renewable systems in Iran. Journal of Renewable Energy and Environment, 2018. 5(1): p. 8-22.
  9. Dhahri, M., et al., Thermal performance modeling of modified absorber wall of solar chimney-shaped channels system for building ventilation. Journal of Thermal Analysis and Calorimetry, 2021. 145(3): p. 1137-1149.
  10. Khoukhi, M. and N. Fezzioui, Thermal comfort design of traditional houses in hot dry region of Algeria. International Journal of Energy and Environmental Engineering, 2012. 3(1): p. 1-9.
  11. Rahman, S., et al., Performance enhancement of a solar powered air conditioning system using passive techniques and SWCNT/R-407c nano refrigerant. Case Studies in Thermal Engineering, 2019. 16: p. 100565.
  12. Wiksten, R. and M.E.H. Assad, Heat and mass transfer characteristics in a spray chamber. International journal of refrigeration, 2007. 30(7): p. 1207-1214.
  13. Reyes, V., et al., A study of air flow and heat transfer in building-wind tower passive cooling systems applied to arid and semi-arid regions of Mexico. Energy and Buildings, 2013. 66: p. 211-221.
  14. Akbarzadeh, A., W. Charters, and D. Lesslie, Thermocirculation characteristics of a Trombe wall passive test cell. Solar Energy, 1982. 28(6): p. 461-468.
  15. Ong, K., A mathematical model of a solar chimney. Renewable energy, 2003. 28(7): p. 1047-1060.
  16. Ong, K. and C. Chow, Performance of a solar chimney. Solar energy, 2003. 74(1): p. 1-17.
  17. Bassiouny, R. and N.S. Koura, An analytical and numerical study of solar chimney use for room natural ventilation. Energy and buildings, 2008. 40(5): p. 865-873.
  18. Gan, G., Simulation of buoyancy-induced flow in open cavities for natural ventilation. Energy and buildings, 2006. 38(5): p. 410-420.
  19. Gan, G., Impact of computational domain on the prediction of buoyancy-driven ventilation cooling. Building and Environment, 2010. 45(5): p. 1173-1183.
  20. Bacharoudis, E., et al., Study of the natural convection phenomena inside a wall solar chimney with one wall adiabatic and one wall under a heat flux. Applied Thermal Engineering, 2007. 27(13): p. 2266-2275.
  21. Khanal, R. and C. Lei, A numerical investigation of buoyancy induced turbulent air flow in an inclined passive wall solar chimney for natural ventilation. Energy and Buildings, 2015. 93: p. 217-226.
  22. Sudprasert, S., C. Chinsorranant, and P. Rattanadecho, Numerical study of vertical solar chimneys with moist air in a hot and humid climate. International Journal of Heat and Mass Transfer, 2016. 102: p. 645-656.
  23. Maerefat, M. and A. Haghighi, Natural cooling of stand-alone houses using solar chimney and evaporative cooling cavity. Renewable energy, 2010. 35(9): p. 2040-2052.
  24. Almutairi, K., et al., Ranking locations for hydrogen production using hybrid wind-solar: a case study. Sustainability, 2021. 13(8): p. 4524.
  25. Kalbasi, R., et al., Optimal design and parametric assessment of grid-connected solar power plants in Iran, a review. Journal of Solar Energy Research, 2019. 4(2): p. 142-162.
  26. Mostafaeipour, A., et al., A novel integrated approach for ranking solar energy location planning: a case study. Journal of Engineering, Design and Technology, 2020.
  27. Pahlavan, S., et al., Assessing the Current Status of Renewable Energies and Their Limitations in Iran. International Journal of Renewable Energy Development, 2020. 9(1).
  28. Sirignano, W.A., Fluid dynamics and transport of droplets and sprays. Vol. 2. 2000: Cambridge university press Cambridge.
  29. Pearlmutter, D., et al., Refining the use of evaporation in an experimental down-draft cool tower. Energy and buildings, 1996. 23(3): p. 191-197.
  30. Shih, T.-H., et al., A new k-ϵ eddy viscosity model for high reynolds number turbulent flows. Computers & fluids, 1995. 24(3): p. 227-238.
  31. Bouchair, A., Solar chimney for promoting cooling ventilation in southern Algeria. Building Services Engineering Research and Technology, 1994. 15(2): p. 81-93.
  32. Gan, G. and S. Riffat, A numerical study of solar chimney for natural ventilation of buildings with heat recovery. Applied Thermal Engineering, 1998. 18(12): p. 1171-1187.
  33. Sayed, A., et al., An analysis of thermal comfort for indoor environment of the new assiut housing in Egypt. International Journal of Architectural and Environmental Engineering, 2014. 7(5): p. 381-387.
Journal of Solar Energy Research
Volume 7, Issue 4
October 2022
Pages 1174-1187

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