Passive cooling of buildings by using integrated earth to air heat exchanger and solar chimney

Passive cooling is being employed as a low-energy consuming technique to remove undesirable interior heat from a building in the hot seasons. There are numerous ways to promote this cooling technique, and in the present study the use of solar chimney (SC) together with earth to air heat exchanger (EAHE) is introduced. Consequently, theoretical analyses have been conducted in order to investigate the cooling and ventilation in a solar house through combined solar chimney and underground air channel. The finding shows that the solar chimney can be perfectly used to power the underground cooling system during the daytime, without any need to electricity. Moreover, this system with a proper design may also provide a thermally comfortable indoor environment for a large number of hours in the scorching summer days. Based on the required indoor thermal comfort conditions, the numbers of required SCs and EAHEs are calculated and some features of such a system is presented. It is widely expected that the proposed concept is useful enough to be incorporated with a stand-alone or a cluster of buildings especially in some favorable climates.

[1]  Leyla Ozgener,et al.  A review on the experimental and analytical analysis of earth to air heat exchanger (EAHE) systems in Turkey , 2011 .

[2]  Jyotirmay Mathur,et al.  Experimental investigations on solar chimney for room ventilation , 2006 .

[3]  N. K. Bansal,et al.  Performance of earth air tunnels , 1983 .

[4]  Jyotirmay Mathur,et al.  SUMMER-PERFORMANCE OF INCLINED ROOF SOLAR CHIMNEY FOR NATURAL VENTILATION , 2006 .

[5]  Pierre Hollmuller,et al.  Analytical characterisation of amplitude dampening and phase-shifting in air/soil heat-exchangers , 2003 .

[6]  K. S. Ong.  A mathematical model of a solar chimney , 2003 .

[7]  Gail Brager,et al.  A Standard for Natural Ventilation , 2000 .

[8]  D. Y. Goswami,et al.  Heat transfer analysis in environmental control using an underground air tunnel , 1985 .

[9]  N. K. Bansal,et al.  A study of solar chimney assisted wind tower system for natural ventilation in buildings , 1994 .

[10]  Moncef Krarti,et al.  ANALYTICAL MODEL FOR HEAT TRANSFER IN AN UNDERGROUND AIR TUNNEL , 1996 .

[11]  Pierre Hollmuller,et al.  Cooling and preheating with buried pipe systems: monitoring, simulation and economic aspects , 2001 .

[12]  G. Mihalakakou,et al.  On the coupling of thermostatically controlled buildings with ground and night ventilation passive dissipation techniques , 1997 .

[13]  Ramadan Bassiouny,et al.  An analytical and numerical study of solar chimney use for room natural ventilation , 2008 .

[14]  I. F. Hamdy,et al.  Passive solar ventilation , 1998 .

[15]  S. Riffat,et al.  A numerical study of solar chimney for natural ventilation of buildings with heat recovery , 1998 .

[16]  Carson C. Chow,et al.  Performance of a solar chimney , 2003 .

[17]  J. Hirunlabh,et al.  Ventilation impact of a solar chimney on indoor temperature fluctuation and air change in a school building , 2000 .

[18]  Xiaoqiang Zhai,et al.  A review for the applications of solar chimneys in buildings , 2011 .

[19]  Dennis L. Loveday,et al.  The cooling potential of earth-air heat exchangers for domestic buildings in a desert climate , 2006 .

[20]  S. C. Kaushik,et al.  Heating and cooling potential of an earth-to-air heat exchanger using artificial neural network , 2006 .

[21]  W. Beckman,et al.  Solar Engineering of Thermal Processes , 1985 .