INCREASE IN CHELYABINSK HEATING SYSTEM EFFICIENCY BY UTILIZATION OF LOW-GRADE WASTE HEAT

We consider the possibility of improving the heat supply system in Chelyabinsk through the introduction of heat pump technology for the disposal of low-grade waste heat. The paper analyzes the problems of the heat supply system in Russia. The majority of consumers in large cities of the central Russia are supplied with heat energy through the centralized heat supply system. This approach is largely outdated and inapplicable to the modern energy system. We propose the method for increasing the efficiency of centralized heating using heat pumps. This paper makes the evaluation of the effectiveness of the use of this method, namely performs a calculation study, the final result of which is estimation of efficiency of low-grade waste heat utilization in the Chelyabinsk heat supply system. For this purpose, we have previously analyzed the sources of information on the ways of utilization of waste thermal energy, the principles of the heat pumps operation, and the classification of urban sources of waste heat. The first stage of this study is the development of a calculation technique that makes it possible to estimate at varying initial parameters of the heat supply system objects. The developed technique allows estimating the efficiency of using heat pumps for each category of municipal sources of waste heat energy: energy (CHP, boilers, heating networks) and non-energy (residential, public and production facilities) ones. The second stage is the application of this technique to Chelyabinsk. As a starting point for this stage, we take the data which characterize the climatic features, energy parameters of the sources of centralized heating supply, as well as data on the population, economy and industrial facilities in Chelyabinsk. The result of the study is the numerical value of the efficiency of waste heat utilization in Chelyabinsk.

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