Application of H&S and UFS models for a parametric analysis of the exergoeconomic variables of an organic Rankine cycle-vapor-compression refrigeration system

Alternative thermoeconomic models that propose novel concepts to solve both dissipative component and waste problems have been published such as H&S Model and UFS Model. These models have been applied to carry out cost and/or environmental impact allocations, and operational diagnosis. Thus, the...

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Bibliographic Details
Published in:Journal of the Brazilian Society of Mechanical Sciences and Engineering 2021-11, Vol.43 (11), Article 518
Main Author: Lourenço, Atilio B.
Format: Article
Language:English
Subjects:
Allocations
Cost analysis
Destruction
Engineering
Environmental impact
Exergy
Fuels
Mechanical Engineering
Parametric analysis
Parametric statistics
Rankine cycle
Refrigeration
Technical Paper
Thermodynamic cycles
Vapor compression refrigeration
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Summary:Alternative thermoeconomic models that propose novel concepts to solve both dissipative component and waste problems have been published such as H&S Model and UFS Model. These models have been applied to carry out cost and/or environmental impact allocations, and operational diagnosis. Thus, they were not applied to perform cost assessments for systems improvement. In this paper, both H&S and UFS models are concomitantly applied to an Organic Rankine Cycle coupled to a vapor-compression refrigeration cycle, being the H&S applied to the power cycle and the UFS applied to the refrigeration cycle. The objective is to verify whether both thermoeconomic approaches can be applied to obtain the exergoeconomic variables of both cycles. The exergoeconomic variables analyzed in this study are the exergetic efficiency (product-fuel ratio), cost rate of exergy destruction, sum of component investment and exergy destruction cost rates, relative cost difference, and exergoeconomic factor. In addition, a parametric analysis of these variables is done. To better analyze the results from the application of both H&S and UFS models, Specific Exergy Costing is applied as well. The results show that there is a limitation in the boiler exergoeconomic modeling considering both Specific Exergy Costing and H&S Model. This is due to the zero cost of the system’s overall fuel, which can be considered a singularity. In general, both H&S and UFS models can be applied to obtain the exergoeconomic variables of systems that undergo thermodynamic cycles.
ISSN:1678-5878
1806-3691
DOI:10.1007/s40430-021-03231-x