Low temperature geothermal springs, which account for about half the total known in India, have been mainly used for spas or other types of bathing. A suggestion has been made that the surface or subsurface hot water from geothermal springs could be used to energise solar pumps which otherwise...

This paper reports the results of a preliminary study of the thermo emf of concentration cells. The electrical output of different cells as a function of temperature and salt concentration has been determined. Results for experimental solar stills are given. The possibility of using the...

Experiments on the effects of dye on the output of a solar still were carried out during June, 1979. Black and violet dyes were found to be more effective than other dyes, and the performance with a dye present was found to improve, the deeper the still.