ENSURING THE ENERGY SECURITY OF A RESIDENTIAL AREA ON THE BASIS OF AN ELECTRIC GENERATING PLANT OPERATING ON THE HEAT OF THE NETWORK WATER

The paper deals with a new concept for the design of autonomous thermal stations based on the use of the heat of the network water to generate electricity and the drive of necessary equipment, including the power supply of pumps, automation schemes, water treatment, lighting, and other consumers. This creates the conditions for the safe operation of the entire energy supply system of a residential area in case of accidents or terrorist attacks. The new power plant does not need a fuel supply such as a diesel power plant because the source for the production of electric power is hot water, supplied to the heat station from the main heating pipelines of the thermal power station. Low-boiling fire-safe working bodies such as freons are proposed as the working medium of the electric generating steam power circuit. The essence of the new approach is considered in detail with the example of the proposed plant included in the central heating station (CHS): the thermal scheme of the modernized CHS is presented; basic elements are shown that make it possible to clarify the operation principle of the plant and the method for obtaining electricity from hot water (the source of heat is hot water that flows through the supply pipe from the heat network to the heat exchanger-steam generator of the working fluid). The efficiency of the new plant is estimated using an exergy diagram. The calculations showed the high exergetic efficiency of the new power plant, which makes its implementation extremely urgent and necessary.

It is shown that in addition to increasing reliability and solving the problem of security of power supply in the district, a new power plant is economically advantageous, since the cost of a unit of electricity generated for own needs is 3- 4 times cheaper than the purchase because of the absence of intermediaries and high exergy efficiency of the plant. 

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