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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Bibliographic Details
Published in:Journal of engineering physics and thermophysics Vol. 95; no. 1; pp. 9 - 19
Main Authors: Osintsev, K. V., Alyukov, S. V.
Format: Journal Article
Language:English
Published: New York Springer US 01.01.2022
Springer
Springer Nature B.V
Subjects:
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
Online Access:Get full text
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Summary: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.
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ISSN:1062-0125
1573-871X
DOI:10.1007/s10891-022-02451-9