The Exergy Analysis of the Heating Mode of a Trigeneration Energy Complex Based on a New Heat Transformer

https://doi.org/10.58224/2618-7183-2023-6-4-58-68
The article analyzes from energy and exergy positions the trigeneration power complex, developed by the authors and consisting of two main units: a heat engine and a new heat transformer, additionally having a generator for generating electricity for own needs. The main advantage of this energy complex is the reduction of fuel consumption in the heating mode. The emphasis is on the thermal efficiency of the installation and its thermodynamic parameters.
The energy complex under study operates on organic fuel as well as using renewable energy sources (heat pump on organic fuel) and allows obtaining the value of the coefficient of energy effi-ciency from one and a half to more than three in the heating mode. Based on the analysis of energy efficiency calculated by the method of thermal balances, the authors conducted an exergetic analysis. Different variants of inclusion of mechanical and heat compressors of steam-compression and absorp-tion pumps, such as serial, parallel and mixed, were considered. For each variation, there will be dif-ferent working conditions, efficiency and different use of a source of heat and mechanical energy
As a result of the calculation analysis it was concluded that at a sufficiently high coefficient of en-ergy efficiency in the heating mode, the energy complex also has a large potential for its additional increase. In addition, the energy complex produces cold in the warm season and does not need to be connected to the power supply networks. And insufficiently high values of exergy efficiency indicate the imperfection of the thermodynamic system and its potential for further improvement and increase of the energy efficiency coefficient.
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Papin V.V., Bezuglov R.V. The Exergy Analysis of the Heating Mode of a Trigeneration Energy Complex Based on a New Heat Transformer. Construction materials and products. 2023. 6 (4.) P. 58 – 68. https://doi.org/10.58224/2618-7183-2023-6-4-58-68