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Research Papers

An Exergoeconomic Analysis of Hybrid Electric Vehicle Thermal Management Systems

[+] Author and Article Information
H. S. Hamut

Faculty of Engineering and Applied Science,
University of Ontario Institute of Technology,
2000 Simcoe St. North,
Oshawa, ON L1H 7K4, Canada
e-mail: Halil.Hamut@uoit.ca

I. Dincer

Faculty of Engineering and Applied Science,
University of Ontario Institute of Technology,
2000 Simcoe St. North,
Oshawa, ON L1H 7K4, Canada
e-mail: Ibrahim.Dincer@uoit.ca

G. F. Naterer

Faculty of Engineering and Applied Science,
Memorial University of Newfoundland,
240 Prince Phillip Drive,
St. John's, NL A1B 3X5, Canada
e-mail: gnaterer@mun.ca

1Corresponding author.

Manuscript received December 24, 2012; final manuscript received August 15, 2013; published online November 15, 2013. Assoc. Editor: S. A. Sherif.

J. Thermal Sci. Eng. Appl 6(2), 021004 (Nov 15, 2013) (11 pages) Paper No: TSEA-12-1235; doi: 10.1115/1.4025419 History: Received December 24, 2012; Revised August 15, 2013

In this paper, exergy analysis of a hybrid electric vehicle thermal management system (TMS) is initially investigated in order to find the areas of inefficiencies and exergy destruction within each system component. In the analysis, advanced exergy modeling is utilized to study both endogenous/exogenous and avoidable/unavoidable exergy destructions for each component of the system and further understand the interactions among the TMS components and determine the underlying reasons behind the exergy destructions. Moreover, this approach is also used to enhance exergoeconomic analyses by calculating the endogenous/exogenous and avoidable/unavoidable portion of the investment and exergy destruction costs (so-called advanced exergoeconomic analysis) in order to improve the cost effectiveness of the system and provide information on how much of the cost can be avoided for each component. Based on the analysis, it is determined that exogenous exergy destruction is small but significant portion of the total exergy destruction in each component (up to 40%, in the chiller and thermal expansion valves) and that large portion of the exergy destruction within the components (up to 70%, in the compressor) could be potentially avoided. Moreover, it is determined that electric battery, compressor, and chiller are dominated by investment cost, whereas the condenser and evaporator are dominated by the cost of exergy destruction in the system.

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References

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Figures

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Fig. 1

Simplified representation of the hybrid electric vehicle thermal management system

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Fig. 2

Exergy destruction rates and exergy efficiencies (shown in parenthesis) of TMS components

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Fig. 3

Determined relationship between compressor exergy destruction rate and investment cost rates

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Fig. 6

Relationship between compressor exergy destruction rate and investment cost rates per unit product exergy under different interest rates

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Fig. 7

Relationship between condenser exergy destruction rate and investment cost rates per unit product exergy under different interest rates

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Fig. 8

Relationship between evaporator exergy destruction rate and investment cost rates per unit product exergy under different interest rates

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Fig. 9

Total and avoidable cost rates with respect to (a) investment and (b) exergy destruction for the compressor based on various compressor efficiencies

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Fig. 10

Total and avoidable cost rates with respect to (a) investment and (b) exergy destruction for the condenser based on various condensing temperatures

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Fig. 11

Total and avoidable cost rates with respect to (a) investment and (b) exergy destruction for the evaporator based on various evaporating temperatures

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Fig. 4

Determined relationship between condenser exergy destruction rate and investment cost rates

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Fig. 5

Determined relationship between evaporator exergy destruction rate and investment cost rates

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