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Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 17 Dec 2021Publisher:MDPI AGJournal:Energies, volume 14, page 8,519 (eissn: 1996-1073,

Authors: Nikolay Rogalev; Vladimir Kindra; Ivan Komarov; Sergey Osipov; Olga Zlyvko; Dmitrii Lvov;

doi: 10.3390/en14248519

Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines

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Abstract

Thermal power plants (TPPs) with back-pressure steam turbines (BPSTs) were widely used for electricity and steam production in the Union of Soviet Socialist Republics (USSR) due to their high efficiency. The collapse of the USSR in 1991 led to a decrease in industrial production, as a result of which, steam production in Russia was reduced and BPSTs were left without load. To resume the operation of TPPs with BPSTs, it is necessary to modernize the existing power units. This paper presents the results of the thermodynamic analysis of different methods of modernization of TPPs with BPSTs: the superstructure of the steam low-pressure turbine (LPT) and the superstructure of the power unit operating on low-boiling-point fluid. The influence of ambient temperature on the developed cycles’ efficiency was evaluated. It was found that the usage of low-boiling-point fluid is thermodynamically efficient for an ambient temperature lower than 7 °C. Moreover, recommendations for the choice of reconstruction method were formulated based on technical assessments.

Related Organizations

Moscow Power Engineering Institute
Russian Federation
National University of Engineering
Peru
Moscow Power Engineering Institute
Russian Federation
National University of Engineering
Peru

Keywords

low-boiling-point fluid; thermodynamic optimization; efficiency; average annual temperature; net power; superstructure; layout, Technology, low-boiling-point fluid, T, average annual temperature, net power, thermodynamic optimization, efficiency, superstructure

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	8
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%