Improving the energy efficiency of thermal energy generation, transportation and consumption systems is one of the priority tasks of the modern development of the fuel and energy complex of Russia. The climatic conditions of Russia determine the heat supply systems as an energy-intensive industry that consumes up to 40% of the primary energy resources of country. Russia is characterized by a high level of centralized heat supply, mainly from sources of combined generation of heat and electric energy, which led to the creation of an extensive pipeline system with a length of more than 250 thousand km with a diameter of 57 to 1400 mm. In practice, the following methods of laying pipelines are used: canal, canal-free, aboveground. The heat losses of pipelines of thermal networks amount to 324 million gcal/year, which is approximately 16% of the heat released to consumers, this indicates significant reserves of saving thermal energy. The successful solution of the problem of reducing heat losses during the transportation of the heat transfer agent can be achieved by using modern materials and developing highly efficient porous thermal insulation structures, as well as improving the methods of calculating heat networks and the optimal choice of thermal insulation materials for the required operating conditions.
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