Natural Ventilation Using Glazed Solar Chimney and Hot Water Collector Production

This paper presents a report on the development and experiment thermal performance of a multi-purpose glazed solar chimney and hot water collector production (GSC-HWC) under the tropical climate conditions in Thailand. The GSC-HWC configuration consists of double pane layers 0.60 m height and 0.50 m width. The external layer is a glazed solar hot water collector, with non-reflective painted black pipes 0.01 m diameter to produce approximately 10 liters of hot water. The internal layer was a clear glass pane with a thickness of 6 mm. The GSC-HWC has 0.08 m air gap with two openings 0.24 m x 0.12 m located at the bottom of interior glass pane and at the top of exterior glass pane. The openings exhaust hot air to the ambience and covered with anti-insect screens. The panes can be removed for easy maintenance. Comparing the experimental results between GSC-HWC and a single clear glass window (SG) of the same size (0.60m high, 0.50m width and 0.006m thick,) revealed that indoor temperature of the GSC-HWC room was significantly less than the SG room,. Furthermore, the finding indicated that the GSC-HWC can induce ventilation and reduce heat from sunlight whereas the daylight gain was nearly the same as single glass window room. The water temperature of GSC-HWC was relatively high and sufficient for domestic use. As a result, the GSC-HWC is expected to promote the growth of solar energy usage; save energy in heating, cooling and ultimately help the environment.