THEORETICAL BASIS OF THE ECONOMIC ATTRACTIVENESS OF USING HEAT PUMPS IN CITY INFRASTRUCTURE

Abstract

The use of heat pumps, as the main equipment for heating water, can be used for the first stage of water heating, since it requires less energy use. Water heating in the year of its maximum use by the heating network or autonomous equipment is taken into account when choosing a heat pump by capacity. A heat exchanger can be used to dispose of heat in small areas of the collectors. In the research, the search for an economically attractive project with a quick payback period and low cost with the provision of hot water supply appears. Further calculation of the project should offer financial attractiveness and practical use for existing condominiums and boiler houses. The object of research in the work is dormitories No. 7 and 8 of the National University of Water Management and Nature Management, Rivne. The existing hot water supply system and its cost to consumers were chosen as the basic economic coefficient. Capital and operating costs are included in the cost of the heat pump and the payback period is calculated. Alternatives to the heat pump are natural gas boilers and an electric boiler, which also take into account the costs of accumulative water heating. The costs of connecting to a centralized hot water supply network and the cost of a boiler or water heater are not taken into account. It is known that composites with organic binders are characterized by a high intensity of strength gain. Traditionally, the works were limited to the determination of strength characteristics (destructive stress during compression, bending, etc.) due to the same time segments of hardening (structuring) for different temperatures; later, analytical expressions describing the change in the strength of composites over a wide period of time were found. It was established that the analytical expressions used for organic composites (based on polyester resins, furfural-acetone monomer, methyl methacrylate, etc.) have a private nature and do not take into account the specifics of the strength process of composites based on other binders. In the first option, the existing elements of the HOT WATER SUPPLY system are used: the heating line from the CTP and from the boiler house along the street. Karnaukhova, 41. In the second option, the following elements of the hot water supply system are designed, built and installed: vertical probes (wastewater wells), heat pump, accumulator tanks, circulation pumps and pipelines. In the third, elements of the hot water supply system are designed, built and installed: heat exchanger pipe, heat pump, accumulator tanks, pipelines. The paper considers a technical and economic comparison of hot water supply systems: - traditional from centralized hot water supply; - with the help of a heat pump, which uses the heat of the soil and waste water. Keywords: heat pump, economic attractiveness, water heating, domestic hot water, thermal energy, heat capacity, waste water, energy potential.