太阳能烟囱+TROMBE墙复合结构的性能研究

Research on the Performance of a Composite Structure of Solar Chimney and Trombe Wall

将太阳能烟囱和TROMBE墙这两种太阳能强化自然通风方式相结合,提出两者串联的复合太阳能利用结构。利用传热学理论,采用能量平衡法对其建立了数学模型,并就其结构尺寸与室外气象参数对其通风性能的影响进行了计算和比较,结果表明:采用"太阳能烟囱+TROMBE墙复合结构"来强化高温高湿地区室内的通风是完全可行的;其性能受结构参数与室外气象条件影响很大,墙面宽度与高度及太阳辐射强度与室外气温的增加均有助于改善复合结构的性能,但空气夹层厚度的盲目增大会降低其通风性能,10cm可以达到较好的运行效果;其倾角可根据具体情况控制在30°～60°。研究结果对太阳能烟囱+TROMBE墙复合结构的实际应用具有重要的指导意义。

A composite architecture structure of solar energy utilization which combines solar chimney and Trombe wall is presented for improving natural ventilation. A simplified mathematical model is developed based on the energy conservation by use of the heat transfer theory. Calculation and comparison are done to explore the influence of the structure size and outdoor climate parameters on the performance of the composite structure. The results show that the application of the composite structure in hot and humid district for improving indoor ventilation is completely feasible. The working performance is affected strongly by the structure size and outdoor climate conditions. The increase of width and height of the composite structure and solar radiation and outside temperature can improve the performance. However, the blindfold increase of air gap will debase the performance of the composite structure. As for an air gap, a gap of about 10 cm can be preferable for optimizing the ventilation effect. The slope can be restricted to the range of 30°-60° based on specific condition. The results are significant for the practical application of the composite architecture structure of solar chimney and Trombe wall.