Experimental investigations of hybrid: geothermal water/solar chimney power plant

Summary

A small solar chimney power plant prototype at Ouargla University was fitted with a spiral geothermal water pipe inside its collector so it could keep running after sunset. Winter tests showed that geothermal heating alone sustains airflow at night, best when water enters at the collector centre. Combining it with sunlight raised the centre temperature to 80 °C and air speed to about 7 m/s, above solar-only operation.

Description written by Solar Tower. The original abstract is available from the publisher via the link below.