Off-design performance of an organic Rankine-vapor compression cooling cycle using R1234ze(E)

Grauberger, Alex M.; Young, Derek; Bandhauer, Todd M.

doi:10.1016/j.apenergy.2022.119421

Cited by 17 publications

(2 citation statements)

References 13 publications

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“…In Equation (27), i is the interest rate (10%) and n is the expected life of the system (20 years) [50]. The total system cost rate of the designed system is calculated by summing the total capital investment cost, the total exergy destruction cost and the cost of the lost exergy (Equation ( 28)) [51].…”

Section: Ex In Andmentioning

confidence: 99%

“…They observed that the thermal COP was 0.66. Gauberger et al [27] also reported the off-design performance of the their system. They stated that increasing the driving heat source inlet temperature improved the COP of the system and the thermal efficiency of the ORC power cycle, while decreasing the efficiency of the compressor and the COP of the VCR.…”

Section: Introductionmentioning

confidence: 99%

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Exergoeconomic and Exergetic Sustainability Analysis of a Combined Dual-Pressure Organic Rankine Cycle and Vapor Compression Refrigeration Cycle

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2023

Sustainability

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In this paper, an exergoeconomic and exergetic sustainability analysis of a dual-pressure organic Rankine cycle (ORC) and vapor compression refrigeration cycle (VCRC) driven by waste heat is performed for power generation and cooling production. In addition, the most suitable fluid couple among the thirty-five different fluid pairs was investigated for the proposed combined system. The results indicate that the highest energy utilization factor, exergy efficiency, the system coefficient of performance, and net power are calculated for the R123-R141b fluid pair. In terms of exergetic sustainability indicators, the best performance results are obtained for the R123-R141b fluid combination. The minimum unit electricity generation cost and the shortest payback period are calculated as 0.0664 $/kWh and 2.5 years, respectively, for the R123-R290 fluid pair. The system component with the highest exergy destruction is the boiler, with 21.67%. The result of the parametric analysis showed that the thermodynamic performance parameters increase with the increment of the ORC’s boiling temperature. In addition, with the increasing boiling temperature, the environmental effect factor of the system decreases, while the exergetic sustainability index increases. Additionally, as the boiling temperature increases, the total system cost increases, while the unit electricity production cost and payback period decrease. It is suggested to use a R123-R141b fluid couple among fluid pairs created as a result of thermodynamic, exergoeconomic and sustainability analysis.

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Section: Ex In Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%