A combined thermal system of ejector refrigeration and Organic Rankine cycles for power generation using a solar parabolic trough

Elakhdar, Mouna; Landoulsi, H.; Tashtoush, Bourhan; Nehdi, Ezzedine; Kairouani, Lakdar

doi:10.1016/j.enconman.2019.111947

Cited by 60 publications

(18 citation statements)

References 47 publications

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“…From the comparison of the system's performance using diverse fluids, Rostamzadeh et al 50 found that the system efficiencies were higher using R123/isobutane than using R245fa/isobutane and isobutane/isobutane. Elakhadar et al 52 reported that using R601, the COPs were about 20% higher than those obtained with R123, R245fa, and R141b. Boyaghchi et al 55 compared the system performance operating with R134a, R423, R1234ze, and R134yf, and found that the highest efficiencies were obtained using R134a.…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 92%

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Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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Summary A comprehensive review of thermodynamic cycles for the simultaneous production of power and cooling is presented. The study not only actualizes the bibliographic reviews previously realized by other authors regarding cycles such as Kalina, Goswami, or modifications of them. This review additionally includes an overview of hybrid cycles and other novel cycles reported in the literature. The hybrid cycles included in the study are systems integrated by two or three conventional cycles, mainly composed of Brayton, Rankine, and ORC for power generation; and compression, absorption, and ejector cycles for cooling production. The other novel cycles mentioned are thermodynamic cycles, which considerably differ from all the others. By using internal rectification, the Goswami cycle increased its efficiency by about 5%; however, by adding diverse components, as a condenser and a subcooler, the efficiency was significantly improved due to the considerable increase of the cooling production. Organic Rankine cycles integrating absorption refrigeration cycles are, in general, the most efficient hybrid cycles, reaching thermal efficiencies close to 40% for the simultaneous production of power and cooling. If a third output was provided, as heating or water distillation, the energy efficiencies were as high as 90%. The main problem with these systems is that, in general, they are too complex and costly because of the considerable number of components. The highest exergy destruction values are reported in solar collectors when used, followed by boilers or generators, and absorbers. The lower production costs were reported with systems integrating a Brayton cycle, an organic Rankine cycle, and an ejector‐cooling cycle. The disadvantage of these systems is that they need high operating temperatures.

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Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 92%

“…The first and second law efficiencies were 13.17% and 22.2%, respectively. Elakhadar et al 52 analyzed the same system driven by parabolic trough solar collectors. The system was modeled using R601a, R123, R245fa, and R141b.…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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“…The global warming process is a type of climate change that humanity has not yet overcome. Therefore, it is necessary to find out an ecological alternative that replaces conventional fuels, offers better performance, and achieves sustainability [7][8][9][10]. Renewable energy sources, waste material sources, and waste heat may be desirable choices to serve such issues.…”

Section: Introductionmentioning

confidence: 99%

“…The organic Rankine cycle is known as the most promising potential technology in the application of heat recovery achievements in many theoretical and experimental research [23]. Combined power and cold generation cycles using a solar parabolic trough system were proposed and investigated [24]. They have studied the effects of the evaporation pressure and condensation temperature on the thermal efficiency of the introduced system.…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic Analyses of a Cement Plant Waste Heat Recovery in a Novel Combined Power and Refrigeration Cycle

Tashtoush¹,

Megdouli²,

Gholizadeh³

et al. 2021

IJDNE

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To reduce fossil fuel consumption and its polluted environmental impact, a new enhanced waste heat recovery system operated by hot chimney flue gases from a cement plant is designed, analyzed, and evaluated. The configuration of the system is competitive and innovative. It is designed to be capable of producing space air cooling and electricity generation, simultaneously. Three temperature levels in the proposed cycle are considered, and a detailed mathematical model is developed with energy, exergy, and economic aspects are considered to achieve the best performance of the system. Computer FORTRAN subroutines are developed and run for simulation of several scenarios. A comprehensive parametric investigation and thermo-economic analysis are conducted and presented. It was found that the optimistic recovery system can achieve a refrigeration load coverage of 300 kW, while the energy and exergy efficiencies are 36.23% and 29.41%, respectively. The anticipated system seems to be optimistic knowing the cost of the product is estimated to be $45.97 per GJ.

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“…Furthermore, SERS is competitive with the mentioned technologies as they have lower cost, no moving parts, simple system design, and can be driven by low-grade thermal sources [ 1 , 2 ]. The solar energy can be used to drive an organic Rankine cycle (ORC) to generate electrical power [ 3 , 4 , 5 ]. Combined cycles and systems were proposed by several researchers to maximize the utilization of wasted heat and renewable energy and reduce fossil fuel consumption to alleviate environmental problems [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Exergy and Exergoeconomic Analysis of a Cogeneration Hybrid Solar Organic Rankine Cycle with Ejector

Tashtoush

Morosuk

Chudasama

2020

Entropy

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Solar energy is utilized in a combined ejector refrigeration system with an organic Rankine cycle (ORC) to produce a cooling effect and generate electrical power. This study aims at increasing the utilized share of the collected solar thermal energy by inserting an ORC into the system. As the ejector refrigeration cycle reaches its maximum coefficient of performance (COP), the ORC starts working and generating electrical power. This electricity is used to run the circulating pumps and the control system, which makes the system autonomous. For the ejector refrigeration system, R134a refrigerant is selected as the working fluid for its performance characteristics and environmentally friendly nature. The COP of 0.53 was obtained for the ejector refrigeration cycle. The combined cycle of the solar ejector refrigeration and ORC is modeled in EBSILON Professional. Different parameters like generator temperature and pressure, condenser temperature and pressure, and entrainment ratio are studied, and the effect of these parameters on the cycle COP is investigated. Exergy, economic, and exergoeconomic analyses of the hybrid system are carried out to identify the thermodynamic and cost inefficiencies present in various components of the system.

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A combined thermal system of ejector refrigeration and Organic Rankine cycles for power generation using a solar parabolic trough

Cited by 60 publications

References 47 publications

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Exergoeconomic Analyses of a Cement Plant Waste Heat Recovery in a Novel Combined Power and Refrigeration Cycle

Exergy and Exergoeconomic Analysis of a Cogeneration Hybrid Solar Organic Rankine Cycle with Ejector

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