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The potential of solar chimney for application in rural areas of developing countries

机译：太阳烟囱在发展中国家农村地区的应用潜力

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Solar chimney electric power generation is one of the concepts in renewable energy technology (RET) application. The power station is based simply on the principle that warm air rises. Air underneath a glass ceiling is heated by solar radiation and rises through a chimney. The warm air which has just risen is replaced by air from the edge of the glass ceiling which flows inward, and will then itself begin to heat up. In this way the Sun's heat radiation is converted into kinetic energy of constantly rising air to drive turbine built into the chimney. The turbine then converts the wind power by means of a generator into electrical energy. We have considered the appropriateness of a solar chimney to rural villages and highlight some features of such a power generating plant. The calculations carried out show that the power that can be generated by a solar chimney of specific dimension exhibit a minimum threshold value of tau = 2.9, the temperature ratio of the difference between the collector surface temperature and the temperature at the turbine (T_s-T_H) to the difference between the air mass temperature under the roof and the collector surface temperature (T_m-T_s). Our calculations show that for tau = 2.9, an appreciable electric power (>= 10~3 W) can be generated by a sturdy and physically viable solar chimney whose dimension has been determined to be L = 150 m, H = R = 1.5m. This the minimum dimension of a practical solar chimney electric power station would serve approximately fifty (50) households in a typical rural setting.
机译：太阳能烟囱发电是可再生能源技术（RET）应用中的概念之一。发电厂仅基于热空气上升的原理。玻璃天花板下面的空气被太阳辐射加热，并通过烟囱升起。刚升起的暖空气被从玻璃天花板边缘向内流动的空气代替，然后本身开始变热。这样，太阳的热辐射就转化为不断上升的空气的动能，从而驱动内置在烟囱中的涡轮机。然后，涡轮机通过发电机将风力转换为电能。我们已经考虑过将太阳能烟囱适用于乡村，并强调了这种发电厂的一些特点。进行的计算表明，特定尺寸的太阳能烟囱可产生的功率显示出最小阈值tau = 2.9，即集热器表面温度与涡轮机温度之间的差的温度比（T_s-T_H ）到屋顶下的空气质量温度与集热器表面温度（T_m-T_s）之差。我们的计算表明，对于tau = 2.9，可通过一个坚固且物理上可行的太阳烟囱（其尺寸已确定为L = 150 m，H = R = 1.5m）产生可观的电力（> = 10〜3 W）。 。实际的太阳能烟囱发电站的最小尺寸将在典型的农村地区为大约五十（50）个家庭提供服务。

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