Endoreversible Trigeneration Cycle Design Based on Finite Physical Dimensions Thermodynamics

Dumitrascu Gheorghe, Feidt Michel, Popescu Aristotel and Grigorean Stefan
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Dumitrascu Gheorghe: “Gheorghe ASACHI” Technical University of Iaşi, Mechanical Engineering Faculty, Str. Prof. Dr. Doc. Dimitrie Mangeron, Nr. 43, Iasi 700050, Romania
Feidt Michel: CNRS U.M.R 7573, Laboratoire d’Energétique et de Mécanique Théorique et Appliquée (LEMTA), University of Lorraine, 2 Avenue de la Forêt de Haye, 54518 Vandoeuvre CEDEX, Nancy, France
Popescu Aristotel: “Gheorghe ASACHI” Technical University of Iaşi, Mechanical Engineering Faculty, Str. Prof. Dr. Doc. Dimitrie Mangeron, Nr. 43, Iasi 700050, Romania
Grigorean Stefan: “Gheorghe ASACHI” Technical University of Iaşi, Mechanical Engineering Faculty, Str. Prof. Dr. Doc. Dimitrie Mangeron, Nr. 43, Iasi 700050, Romania

Energies, 2019, vol. 12, issue 16, 1-21

Abstract: This paper focuses on the finite physical dimensions thermodynamics (FPDT)-based design of combined endoreversible power and refrigeration cycles (CCHP). Four operating schemes were analyzed, one for the summer season and three for the winter season. These basic CCHP cycles should define the reference ones, having the maximum possible energy and exergy efficiencies considering real restrictive conditions. The FPDT design is an entropic approach because it defines and uses the dependences between the reference entropy and the control operational parameters characterizing the external energy interactions of CCHP subsystems. The FPDT introduces a generalization of CCHP systems design, due to the particular influences of entropy variations of the working fluids substituted with influences of four operational finite dimensions control parameters, i.e., two mean log temperature differences between the working fluids and external heat sources and two dimensionless thermal conductance inventories. Two useful energy interactions, power and cooling rate, were used as operational restrictive conditions. It was assumed that there are consumers required for the supplied heating rates depending on the energy operating scheme. The FPDT modeling evaluates main thermodynamic and heat transfer performances. The FPDT model presented in this paper is a general one, applicable to all endoreversible trigeneration cycles.

Keywords: trigeneration; CCHP; finite physical dimensions design; endoreversible upper bound Carnot constraints (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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