OPTIMIZATION OF SOLAR CHIMNEY FOR VENTILATION SPACES

The objective of this study is to develop a modeling method for optimizing the design of a solar chimney combined conservatory to exploit the airing rate in the conservatory. Solar chimney, frequently specified as a thermal chimney. Thermal chimney is a technique of purifying the normal airing of constructions by using convection of air heated by passive solar energy. In hot climates ventilation can be a useful means of chilling houses, if the outdoor air is colder than inside of house. Often, in hot regions the outside air is so hot during the day that cooling by airing is of no advantage till the sunset when the outdoor air gets chiller. Airing can then be useful, and can be encouraged by a sun-warmed cavity.

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A new type of passive solar energy utilization technology—The wall implanted with heat pipes

Energy and Buildings ◽

10.1016/j.enbuild.2014.08.016 ◽

2014 ◽

Vol 84 ◽

pp. 111-116 ◽

Cited By ~ 25

Author(s):

Zhigang Zhang ◽

Zhijian Sun ◽

Caixia Duan

Keyword(s):

Solar Energy ◽

Heat Pipes ◽

Energy Utilization ◽

Solar Energy Utilization ◽

New Type ◽

Passive Solar

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The Comparison of CFD Flow Field between Slope Solar Energy Power Plant and Traditional Solar Chimney Power Generating Equipment

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.561.614 ◽

2013 ◽

Vol 561 ◽

pp. 614-619 ◽

Cited By ~ 1

Author(s):

Qing Ling Li ◽

Xiao Qing Xie ◽

Jun Chao ◽

Xuan Xin ◽

Yan Zhou

Keyword(s):

Power Plant ◽

Velocity Field ◽

Solar Energy ◽

Numerical Study ◽

Solar Chimney ◽

Heat Collector ◽

Fluent Software ◽

Generating Equipment ◽

The Cost ◽

Power Generating Equipment

A numerical study with FLUENT software has been carried out as to air performance in the slope solar energy power plant. The velocity field, temperature and pressure fields in the solar chimney, and the simulated result were compared with the simulated result of traditional solar chimney power generating equipment. The simulation results show that distribution of the temperature field and the velocity field in slope solar energy power plant and traditional solar chimney power generating equipment. In the case of the same height, the velocity of traditional is slightly larger than the slope style's, but there is little difference. In order to achieve the same power generation effect, the overall height of slope style is more than the traditional style, but the vertical chimney height of traditional style is greater than the slope style. The cost of construction of vertical chimney is expensive, and many problems have been considered, like radix saposhnikoviae and earthquake prevention, the heat collector also need to be cleaned on time. The slope style can take full advantage of land, the height of vertical chimney will be reduced, so the construction of the chimney will be relatively easy. Rainwater can clean the heat collector when it runs down from it. All things considered. The slope solar energy power plant has more development prospects.

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The Paradox of Climate Change Mitigation and Adaptation in Danish Housing

Open House International ◽

10.1108/ohi-04-2012-b0003 ◽

2012 ◽

Vol 37 (4) ◽

pp. 19-28

Author(s):

Rob Marsh

Keyword(s):

Climate Change ◽

Energy Consumption ◽

Solar Energy ◽

Theoretical Study ◽

Climate Adaptation ◽

Mitigation Strategy ◽

Mitigation Strategies ◽

Space Heating ◽

Climate Mitigation ◽

Passive Solar

Climate change means that buildings must greatly reduce their energy consumption. It is however paradoxical that climate mitigation in Denmark has created negative energy and indoor climate problems in housing that may be made worse by climate change. A literature review has been carried out of housing schemes where climate mitigation was sought through reduced space heating demand, and it is shown that extensive problems with overheating exist. A theoretical study of regulative and design strategies for climate mitigation in new build housing has therefore been carried out, and it is shown that reducing space heating with high levels of thermal insulation and passive solar energy results in overheating and a growing demand for cooling. Climate change is expected to reduce space heating and increase cooling demand in housing. An analysis of new build housing using passive solar energy as a climate mitigation strategy has therefore been carried out in relation to future climate change scenarios. It is shown that severe indoor comfort problems can occur, questioning the relevance of passive solar energy as a climate mitigation strategy. In conclusion, a theoretical study of the interplay between climate adaptation and mitigation strategies is carried out, with a cross-disciplinary focus on users, passive design and active technologies. It is shown that the cumulative use of these strategies can create an adaptation buffer, thus eliminating problems with overheating and reducing energy consumption. New build housing should therefore be designed in relation to both current and future climate scenarios to show that the climate mitigation strategies ensure climate adaptation.

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