TECHNICAL AND ECONOMIC JUSTIFICATION OF THE CHOICE OF THE OPTIMAL DESIGN OF THE HEATING DEVICE WITH THE FUNCTION OF HEAT ACCUMULATION

Abstract

In order to increase the cooling time of the heating system of the building, especially in the conditions of its operation in pulse mode, a domestic highly efficient heating device with the function of heat accumulation has been developed. A criterion has been derived that can be used by every consumer when choosing the optimal design of a radiator. A study was conducted and a technical and economic evaluation of heating devices of known and developed new design with the function of accumulating phase transition heat was given. A heating device with the function of accumulating heat based on accumulative materials of organic origin with metal nanoparticles has been developed. Experimentally, it was established that 80 W were spent to "charge" a single "tube" with a total weight of 952.9 g and bring the temperature of the heat-accumulating material to 52.1 ºС. A technical and economic analysis of known designs of heating devices was carried out. It is shown that convectors and copper-aluminum radiators are the most efficient heating devices for modern heating systems, when it is necessary to use energy resources rationally or there is a limited amount of heat. From an economic point of view, the most efficient heating device is a convector, but not from a sanitary and hygienic point of view (the presence of dust between the fins). Comparing the efficiency of the developed heating device with the function of heat accumulation based on accumulative materials of organic origin with metal nanoparticles according to the indicator of the specific cost of the heating device, which is 0.24 €/(kW·year), and the indicator of technical and economic efficiency of the operation of the device - 0.27 €/(kW·year) is the most efficient.