Experimental Investigation into the Exergy Loss of a Ground Heat Pump and its Optimization Based on Approximation of Piecewise Linear Functions

The authors have presented experimental data on determining the thermodynamic parameters of a ground heat pump operating on Freon R407c on whose basis the exergy of the flow and the exergy loss in structural elements were calculated. A methodological approach to implementing the exergetic method of...

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Veröffentlicht in:	Journal of engineering physics and thermophysics Jg. 95; H. 1; S. 9 - 19
Hauptverfasser:	Osintsev, K. V., Alyukov, S. V.
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	New York Springer US 01.01.2022 Springer Springer Nature B.V
Schlagworte:	Analysis Approximation Classical Mechanics Complex Systems Electric power-plants Engineering Engineering Thermodynamics Exergy Freons Heat Heat and Mass Transfer Heat pumps Industrial Chemistry/Chemical Engineering Linear functions Low temperature Mathematical analysis Optimization Power plants Rankine cycle Structural members Thermodynamics mathematical model loss heat pump
ISSN:	1062-0125, 1573-871X
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Abstract	The authors have presented experimental data on determining the thermodynamic parameters of a ground heat pump operating on Freon R407c on whose basis the exergy of the flow and the exergy loss in structural elements were calculated. A methodological approach to implementing the exergetic method of thermodynamic analysis has been developed on the basis of novel techniques of approximation of piecewise linear functions. An example of calculation of a ground heat pump operating on Freon R407c with account taken of the exergy of flows in it and their exergetic temperature, and also of the coefficient of performance COP of the pump has been given. The developed methodology can be used in designing novel types of low-temperature power plants: refrigerating machines, heat pumps, thermotransformers, and the organic Rankine cycle operating on new refrigerants, also on zeotropic and azeotropic mixtures.
AbstractList	The authors have presented experimental data on determining the thermodynamic parameters of a ground heat pump operating on Freon R407c on whose basis the exergy of the flow and the exergy loss in structural elements were calculated. A methodological approach to implementing the exergetic method of thermodynamic analysis has been developed on the basis of novel techniques of approximation of piecewise linear functions. An example of calculation of a ground heat pump operating on Freon R407c with account taken of the exergy of flows in it and their exergetic temperature, and also of the coefficient of performance COP of the pump has been given. The developed methodology can be used in designing novel types of low-temperature power plants: refrigerating machines, heat pumps, thermotransformers, and the organic Rankine cycle operating on new refrigerants, also on zeotropic and azeotropic mixtures. Keywords: heat pump, loss, mathematical model. The authors have presented experimental data on determining the thermodynamic parameters of a ground heat pump operating on Freon R407c on whose basis the exergy of the flow and the exergy loss in structural elements were calculated. A methodological approach to implementing the exergetic method of thermodynamic analysis has been developed on the basis of novel techniques of approximation of piecewise linear functions. An example of calculation of a ground heat pump operating on Freon R407c with account taken of the exergy of flows in it and their exergetic temperature, and also of the coefficient of performance COP of the pump has been given. The developed methodology can be used in designing novel types of low-temperature power plants: refrigerating machines, heat pumps, thermotransformers, and the organic Rankine cycle operating on new refrigerants, also on zeotropic and azeotropic mixtures.
Audience	Academic
Author	Osintsev, K. V. Alyukov, S. V.
Author_xml	– sequence: 1 givenname: K. V. surname: Osintsev fullname: Osintsev, K. V. email: osintsev2008@yandex.ru organization: South Ural State University – sequence: 2 givenname: S. V. surname: Alyukov fullname: Alyukov, S. V. organization: South Ural State University
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Refrig.20002352853910.1016/S0140-7007(99)00083-3 – reference: KempIPinch Analysis and Process Integration — A User Guide on Process Integration for the Effi cient Use of Energy2007Butterworth-HeinemannElsevier Ltd. – reference: AlyukovSVApproximation of generalized functions and their derivatives, Atomic SciTech. Ser. Math. Model. Phys. Proc.20132562 – reference: BesTEgzergia w procesach ogrewania, klimatyzacji i suszeniaEnergetyka Przemyslowa196211388392 – reference: WangSHandbook of Air Conditioning and Refrigeration2000New YorkMcGraw-Hill – reference: GaigalisVSkemaRMarcinauskasKKorsakieneIA review on heat pumps implementation in Lithuania in compliance with national energy strategy and EU policyRenew. Sustain. Energy Rev.20165384185810.1016/j.rser.2015.09.029 – reference: AhmadzadehASalimpourMRSedaghatAThermal and exergoeconomic analysis of a novel solar driven combined power and ejector refrigeration (CPER) systemInt. J. 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SubjectTerms	Analysis Approximation Classical Mechanics Complex Systems Electric power-plants Engineering Engineering Thermodynamics Exergy Freons Heat Heat and Mass Transfer Heat pumps Industrial Chemistry/Chemical Engineering Linear functions Low temperature Mathematical analysis Optimization Power plants Rankine cycle Structural members Thermodynamics
Title	Experimental Investigation into the Exergy Loss of a Ground Heat Pump and its Optimization Based on Approximation of Piecewise Linear Functions
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