The high-effíciently thermal generator development for transport park buildings

The article discusses the issue of a heat providing to consumers in terms of capital and operating costs. Our energy complex is the first installation that does the simultaneous use of vapor compression and absorption heat pumps to transform low-grade heat of the same source, due to the operation of the heat engine. The schemes and results of calculating the modes of the heat generator at ideal and real conditions are presented. The economic calculation of the heat generator capital and operating costs and the most common sources of heat supply: gas, electric, solid fuel and liquid fuel boilers, gas condensate boiler and heat pump, has been performed. A feasibility and comparative analysis of the results is carried out. The conclusion is drawn on the using efficiency the heat generator of increased power and on the prospects of further scientific research in this direction.


Introduction
The problem of ensuring reliable heat and hot water supply is extremely important in the context of constantly developing cities, as well as the growth and concentration of heat loads [1,2]. Energy efficiency and sustainability are therefore a top priority [3,4]. After all, the use of organic fuel-based power plants for heat generation [5,6] leads to pollution of the environment, not to mention the increasing prices of energy and resources every year [7].
Of the most relevant studies in the field of energy consumption forecasts, at the current level of consumption coal reserves will suffice for 250 years, gas -for 60 years, oil -for 40 years [8]. British Oil and Gas Corporation BP predicts 30 percent growth in global energy demand by 2035 [9]. Thus, it is very important to manage non-renewable resources rationally. The high-power thermal generator developed in the project allows more efficient use of organic fuel than traditional thermal generators can do it. Despite the fact that the level of gasification is growing every year, there are still many settlements without gas in our country (Russian Federation). As of January 1, 2019, Russia has an average gasification rate of 68.6% in the country, with 71.3% in the city and 59.4% in country settlements [10].
In addition, about 70% of Russia is not covered by centralized electricity supply [11]. Such a problem exists not only in our country, but also in the rest of the world. Even the most developed countries have settlements that are not supplied with gas and electricity. Nevertheless, the problem of economical and reliable energy supply is particularly acute in Russia due to large territories at the Far North [12][13][14]. Our heat generator can run on gas/gasoline/diesel fuel, so it is autonomous, which VIII International Scientific Conference Transport of Siberia -2020 IOP Conf. Series: Materials Science and Engineering 918 (2020) 012130 IOP Publishing doi:10.1088/1757-899X/918/1/012130 2 significantly expands the limits of its application. In addition, when using a heat generator, the emission of harmful substances will decrease due to the use of thermal energy from the environment. This is explained both by the requirements of the existing legal acts and regulatory and technical documentation, as well as by the requests of consumers.

Technological features of the thermal generator
Thermal generator is designed for heat supply due to simultaneous use of an organic fuel and lowpotential energy sources. The scheme of the thermal generator operation at ideal conditions is shown in Figure 1.   Here, the energy efficiency factor is 2.08. At that, COP for ABHP can be equal to 1.7, and 3.2 for SCHP.
A significant difference and advantage of the thermal generator is reduced (from 1.5 to 4 times) fuel consumption at similar heat output. Thus, the purpose of the developed product coincides with the purpose of traditional thermal generators -a heating and hot water supply. This is the modernization of existing and new heating and hot water supply systems -for individual houses, for housing and utilities facilities, trading complexes, agricultural, agro-industrial and sanatoriums. The thermal generator feature like to consume a reduced amount of fuel makes it possible to consider it for autonomous and mobile heat thermal systems, where fuel transportation is difficult or limited.
2. The COP calculation for SCHP and ABHP. Temperature difference between receiver and source is: As shown in Figure 3