Show I 1 house heating by sun J tested in tiny cottage C cottage i CAMBRIDGE MASS MASSA A small cottage may supply the knowledge necessary to reduce the costs of j power heat and air conditioning a by use of the suns rays massachi institute of technology scientists believe designed and constructed for experimental peri mental work only the house i aill will be used for research and ini vesti gation of solar heat and energy t prof H C hottel director of the experiment explained the workings i of the cottage on the roof is a low black bla ck metal lined box to absorb sor solar so ar heat A series of metal tubes is heated by the box and in turn heats water circulated through the ahe tubes several glass covers on the box allow the suns rays to pass to the i metal lining and at the same time imprison most of the heat generah ed when the water has been heated g by the heat collector it passes through carefully insulated pipes to a basement storage tank there depending on the size of 0 athe the tank water can be kept hot for periods of a few weeks to half a year A flow of air around or through the tank would supply heat for or the house or by using the heat bor or power could operate an air con plant |