Title Kombinuotos energetinio aprūpinimo sistemos įdiegimo individualiame name galimybių studija /
Translation of Title Feasibility study of combined energy supply system inplementation for individual house.
Authors Lisauskas, Modestas
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Pages 82
Keywords [eng] wind energy ; solar energy ; heat pump ; combined system
Abstract [eng] The paper analyses the possibility of implementation of combined energy supply systems in individual houses. It reviews the problems and tendencies of heat energy supply to modern housing. The topic of feasibility study of combined energy supply implementation in individual houses has been selected for several reasons. First – as many as 43% of the people in Lithuania live in individual houses. Most of such houses were built many years ago; they are equipped with an out-dated and inefficient heat supply system. Second – the paper is relevant for both newly built houses as well as those already built. The thesis presents the schemes of combined energy supply taking into account their strengths and weaknesses. The major elements of combined systems were examined. A project of a 200 sq. m. individual residential house, which is characteristic of Lithuanian conditions, was selected for a more thorough analysis. The essential characteristics of the house were defined. A ma-thematical model for a solar collector and geothermal heating was developed. The results of calcula-tion in the case of an evacuated tube collector and a flat plate collector were compared. The collec-tors were compared by means of the “f” method. An evacuated tube collector was selected with re-gard to the data received and Lithuanian climatic conditions. Horizontal and vertical collectors were compared in the analysis of geothermal heating systems. In the case of a vertical collector, the de-pendence of thermal resistance and heat flux on the operating time was examined; various collector configurations on the basis of correlation coefficients were evaluated. The dependence of heat flow and thermal resistance was also evaluated under the conditions of different heat transfer coefficients, fluid flow velocities and soil types. Implementation recommendations were prepared for the systems under analysis. Economic indicators for an optimal system were calculated. The paper is important because it clearly proves that the technologies using renewable energy resources are acceptable and can fully meet the heat demands in individual houses as well as supply a 4-member family with hot water.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language Lithuanian
Publication date 2015