Multichannel Solar Chimney - dimensions for a demonstration model
Summary
A rectangular solar chimney of height 5m and cross-section 5 x 1m is described comprising 20 flow channels 0.5m square. This receives warm air from a solar collector of dimensions 5 x 1m and 1m height, which in turn draws ambient air through a nozzle and turbine. By careful selection of the turbine diameter (0.3m) calculation indicates an air flow velocity through the turbine of up to 34 ms-1 and conversion of solar energy into mechanical energy with an efficiency over 40%.