Design and Manufacture of Direct Solar Hot Water Heating System Using Pressure Relief Tube and Expandable Header

감압 튜브 및 팽창헤더를 이용한 직접식 태양열 온수기의 설계 및 제작에 관한 연구

This paper deals with the design, construction and operation of a direct solar hot water heating system developed to harness the solar energy more effectively. The system introduced here uses a unique network of riser tubes and header pipes apart from the existing concept to exploit the physical properties of water which expands when it freezes. It also employs a special pressure relief mechanism for the header to prevent its breakage due to freezing. A number of tests are made to assure its functional reliability during frigid weather conditions and its superior performance over indirect systems.