Analysis and evaluation of a new solar energy-based multigeneration system

Summary In this study, a novel, renewable energy based, multigeneration energy system is introduced, and solar energy is, in this regard, used to produce electricity for a multi‐unit building utilizing a Kalina cycle. For cooling a four‐stage absorption chiller running on excessive or recovered heat...

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Bibliographic Details
Published in:International journal of energy research 2016-08, Vol.40 (10), p.1339-1354
Main Authors: Ozlu, Sinan, Dincer, Ibrahim
Format: Article
Language:English
Subjects:
Air pollution
Cooling
Demand
efficiency
Electricity
environmental impact
Exergy
Kalina cycle
Maximum power
multigeneration
Renewable energy
Solar energy
Thermodynamic models
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Summary:Summary In this study, a novel, renewable energy based, multigeneration energy system is introduced, and solar energy is, in this regard, used to produce electricity for a multi‐unit building utilizing a Kalina cycle. For cooling a four‐stage absorption chiller running on excessive or recovered heat is used. An electrolyzer is employed to produce hydrogen from the unused portion of electricity. In addition, domestic hot water is obtained from the system. In the analysis, a comprehensive thermodynamic model of the system is developed; the exergy efficiencies of the overall system and its components are determined; and the effects of varying configurations and operating conditions on the system performance are investigated. The number of suites that the system can satisfactory meet the demands is determined. Finally, an environmental impact assessment is conducted to determine the reductions in the amount of greenhouse gases, which can easily be achieved here by this solar energy based multigeneration system. The highest energy efficiency of the system is 57%, while the maximum exergy efficiency is 36%. It produces a maximum power of 92 kW and has a maximum cooling effect of 128 kW. It saves 1398 t of CO2 per year compared with a conventional system to produce the same amounts of outputs, which can sufficiently meet the demand of 94 suites, respectively. Copyright © 2016 John Wiley & Sons, Ltd.
ISSN:0363-907X
1099-114X
DOI:10.1002/er.3516