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In this work, an algorithm for assessing the reliability of gas supply for individual enterprises was developed and a block diagram of the application program was compiled. The calculation was made in accordance with the principles of the theory of the probability of disconnecting consumers using digital modeling.

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Heat pump systems become very promising equipment saving energy and improving overall energy efficiency and environmental protection in the residential sector. This review paper provides an update on current specifics of heat pump implementation in Russian residential sector. The paper also reviews major technical and supporting measures promoting broad distribution of the heat pump technology. In a computational part of this paper, heat pump refrigerant evaporation temperature and its influence on fuel consumption were analyzed for a heat pump system arrangement option with parallel evaporators.