SOLAR-HEAT WATER HEATER AND SOLAR-HEAT COLLECTOR USED FOR THE WATER HEATER

摘要

Solar water heating apparatus comprising a housing, apparatus disposed in the housing for receiving incident solar energy and for heating a first fluid thereby, heat exchanger apparatus disposed in the housing for contacting the heated first fluid and being operative to heat a second fluid; and apparatus for providing circulation of the first fluid through the receiving and heating apparatus and in thermal contact with the heat exchanger apparatus and wherein the first fluid is maintained at atmospheric pressure. A solar energy collector and concentrator useful in the above-described heating apparatus is also described and claimed.