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Research Papers

Conceptual Design and Performance Analysis of a Solar Thermal-Photovoltaic-Powered Absorption Refrigeration System

[+] Author and Article Information
Dipankar N. Basu

Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: dipankar.n.basu@gmail.com

A. Ganguly

Department of Mechanical Engineering,
Indian Institute of Engineering Science and Technology Shibpur,
Howrah 711103, India
e-mail: aritra@mech.becs.ac.in

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received September 4, 2014; final manuscript received February 16, 2015; published online March 12, 2015. Editor: Gilles Flamant.

J. Sol. Energy Eng 137(3), 031020 (Jun 01, 2015) (9 pages) Paper No: SOL-14-1254; doi: 10.1115/1.4029910 History: Received September 04, 2014; Revised February 16, 2015; Online March 12, 2015

A conceptual design of the power system for a water–lithium bromide absorption system is presented in this work for a given cooling load. The proposed system utilizes both solar thermal and the photovoltaic (PV) generated electrical energy for its operation. The performance of the power system is analyzed over a complete year for a designed operation strategy. It is found that the proposed system can provide an annual-average surplus of 17.4 kWh of energy per day after meeting the in-house energy requirements. Finally, an economic analysis is performed to calculate the payback period of the system.

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Figures

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Fig. 1

Schematic representation of absorption system under consideration

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Fig. 2

Hourly variation in energy produced by each solar FPC for representative days of various months of a year

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Fig. 3

Hourly variation of thermal (solid lines) and exergetic (dashed lines) efficiencies of each solar FPC for representative days of 3 months of a year

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Fig. 4

Hourly variation in total energy produced by 12 solar FPCs for representative days of 3 months of a year

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Fig. 5

Hourly variation in SCOP of the absorption system for 4 representative months

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Fig. 6

Hourly variation in energy produced per unit area of SPV array for representative days of various months

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Fig. 7

Monthly variation in cumulative energy production of unit area of SPV array and each solar FPC

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Fig. 8

Monthwise variation in tank-water temperature at the end of the day

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Fig. 9

Monthly variation in minimum numbers of SPV module requirement and additional module requirement

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Fig. 10

Monthly energy requirement and surplus energy production of the designed system over a calendar year

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Fig. 11

Hourly variation in overall exergetic efficiency of the designed system for 4 representative months

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