KEY WORDS: integrated power supply of separate facilities, renewable energy sources, alternative energy ABSTRACT:The relevancy of the study is due to low efficiency of using solar and geothermal energy in the existing process schemes. In this regard, this article is aimed at revealing the possibilities of using solar and geothermal energy for the integrated energy supply of separate facilities from renewable energy sources. The mathematical simulation method based on the theory of graphs of energy system operation, which makes it possible to analyze the efficiency of the integrated use of solar and geothermal energies for the heat-cold supply of separate facilities, is the main approach to studying this problem. Energy consumption throughout the year and the emergency energy source capacity in "peak" modes were determined based on the developed mathematical model of managing the system of integrated power supply of separate facilities from renewable energy sources plotted with the use of the theory of graphs. The article materials are of practical value for the designers of the systems of integrated heat-cold supply of separate facilities.
The research relevance is conditioned by decrease in installations efficiency and high fuel consumption due to scale formation on heat-exchange surfaces, and conditioned by transition to ecologically clean, resource-saving power engineering and increase in hydrocarbon raw materials extraction efficiency. In this connection, this article aims at contact type heat generators application disclosing possibilities. The main approach to the study of this problem is the heat-transfer agent contact heating application. This article materials practical value is for complex heat supply systems engineers and designers.
The relevance of the study is due to low effective utilization of heat of fuel combustion in existing heat generators, in particular, boiler units intended for heat supply to industrial enterprises and residential buildings. Another important research area of the study is the ascertaining ability of a boiler to operate on raw water, which hasn’t undergone a process of preliminary reduction of hardness. The article reveals the use of latent heat of water vapor contained in the exhaust gases in all models of existing boiler units. The authors proposed and described a method for the effective utilization of the latent heat by means of contact heating of the coolant.
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