The data of geological exploration works carried out in Lviv region allow us to speak about the significant energy potential of geothermal waters in this region. At present, six bore-wells have been discovered in which the temperature of geothermal waters reaches 120oC at a depth of more than 3000 m. However, today the energy potential of geothermal waters of Lviv region is not used for both technical and economic reasons. This article, analyze the most common schemes for the use of geothermal resources based on the experience of countries with developed geothermal energy For geothermal systems with parameters typical of Lviv region, the greatest effect can be achieved by using doublet systems, which consist of two wells: suction and injection, and the resulting heat energy can be used to heat a wide group of consumers.
The article is devoted to solving the urgent task of increasing the efficiency of air distribution by swirled-compact air jets to ensure the normative parameters of indoor air. The dynamic parameters of the swirled-compact air jet during its leakage in the alternating mode and the formation of a dynamic indoor climate in the room are determined. For improvement of comfortable conditions in the room and design of energy saving circuits of air distribution it is suggested to use swirled-compact air jets, which flow from the inflow and exhaust heat recuperators with heat recovery of the exhaust air. An energy audit of the ventilation system reconstruction with a recuperator using was carried out. The method of taking into account the fact of application of several measures, which cannot be carried out simultaneously, and discount rate dynamics is proposed.
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