ENGINE DRIVEN BY SUN RAY POWER.

Hawera & Normanby Star, Volume LIII, Issue LIII, 10 August 1908, Page 2

ENGINE DRIVEN BY SUN RAY POWER.

Thei usual method of using iiho. 1 piu'n's heat has been to coincentiratei thei rays by roirroirs^ but in thei siniplec." a.pj.ar ratus with which a Mr Frank Shumaa has been ecszpea'iinenting, tho direct rays havei bern made to heat a boiler of blackened pipei coils eoacloseid in & shallow boa with a double glass top. j An air space of onei inch botwectn the two layers of glass forms a, jacket, pre- •\ anting escape of heiat by radiiatioioi. Water in the pipes generated steai'n with a pressur© of 151b, -which wag made to drive aa engine and by applying ether a pressure) of 9Clb -was) reached. In warm climates 1 a good ,wofrking pras6iur& is expected from) , ■wa,te|r, thus solving the perplexing powea' problem of tropical lands.