Exergy analysis of micro-organic Rankine power cycles for a small scale solar driven reverse osmosis desalination system

Tchanche, Bertrand; Lambrinos, G.; Frangoudakis, A.; Papadakis, G.

doi:10.1016/j.apenergy.2009.07.011

Cited by 166 publications

(43 citation statements)

References 43 publications

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“…Tchanche et al [123] developed an approach to evaluate the performance of different ORC configurations by using several criteria based on exergies for different parts of the equipment. Using graph theory they conceptualized the exergy flows and losses within different sections of an ORC system, investigating three different cycle topologies in the condensing and pumping sections (i.e., regenerative heat exchanger, open feed liquid heater and closed feed liquid heater).…”

Section: Reviewed Approachesmentioning

confidence: 99%

Systematic Methods for Working Fluid Selection and the Design, Integration and Control of Organic Rankine Cycles—A Review

2015

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Efficient power generation from low to medium grade heat is an important challenge to be addressed to ensure a sustainable energy future. Organic Rankine Cycles (ORCs) constitute an important enabling technology and their research and development has emerged as a very active research field over the past decade. Particular focus areas include working fluid selection and cycle design to achieve efficient heat to power conversions for diverse hot fluid streams associated with geothermal, solar or waste heat sources. Recently, a number of approaches have been developed that address the systematic selection of efficient working fluids as well as the design, integration and control of ORCs. This paper presents a review of emerging approaches with a particular emphasis on computer-aided design methods.

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Section: Reviewed Approachesmentioning

confidence: 99%

Systematic Methods for Working Fluid Selection and the Design, Integration and Control of Organic Rankine Cycles—A Review

2015

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“…The largest exergy loss occurs in the evaporator, followed by the super heater, condenser, regenerator and internal heat exchanger. Tchanche et al (2010) showed an increase of 7% in the energy efficiency of an ORC integrated with a reverse osmosis desalination system when a regenerator is used. The optimisation analysis of ORC is performed based on the heat exchanger area and the exergy destruction in heat exchangers as the main parameter of study in different studies.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analyses and sustainability assessment of solar-based organic Rankine cycle

Selbaş

Yılmaz

2016

IJEX

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This paper deals with energy and exergy analyses and sustainability assessment of solar-based organic Rankine cycle. Using actual solar energy radiation of Isparta, performance of the cycle was assessed through energy and exergy analyses. Furthermore, variations of energy and exergy efficiencies of the studied system with evaporator/condenser pressures are illustrated. It is observed from the analysis that the energy and exergy efficiencies and sustainability index of the system are calculated as 10.6%, 69.2% and 2.8%, respectively. A working fluid R410a has been used. As a result, evaporation pressure has significant effect on both energy and exergy efficiencies.

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“…The predicted efficiency during the peak solar hours was 14.5%. Tchanche et al [10] studied theoretically in 2 kW micro-solar ORC for desalination of sea water by reverse osmosis process. The study found that the conversion of solar energy into mechanical energy to be less than 5% using three different working fluids namely R134a, R245fa and R600a.…”

Section: Introductionmentioning

confidence: 99%

Energy, Exergy and Performance Analysis of Small-Scale Organic Rankine Cycle Systems for Electrical Power Generation Applicable in Rural Areas of Developing Countries

et al. 2015

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This paper introduces the concept of installing a small-scale organic Rankine cycle system for the generation of electricity in remote areas of developing countries. The Organic Rankine Cycle Systems (ORC) system uses a commercial magnetically-coupled scroll expander, plate type heat exchangers and plunger type working fluid feed pump. The heat source for the ORC system can be solar energy. A series of laboratory tests were conducted to confirm the cycle efficiency and expander power output of the system. Using the actual system data, the exergy destruction on the system components and exergy efficiency were assessed. Furthermore, the results of the variations of system energy and exergy efficiencies with different operating parameters, such as the evaporating and condensing pressures, degree of superheating, dead state temperature, expander inlet temperature and pressure ratio were illustrated. The system exhibited acceptable operational characteristics with good performance under a wide range of conditions. A heat source temperature of 121 °C is expected to deliver a power output of approximately 1.4 kW. In addition, the system cost analysis and financing mechanisms for the installation of the ORC system were discussed.

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Exergy analysis of micro-organic Rankine power cycles for a small scale solar driven reverse osmosis desalination system

Cited by 166 publications

References 43 publications

Systematic Methods for Working Fluid Selection and the Design, Integration and Control of Organic Rankine Cycles—A Review

Systematic Methods for Working Fluid Selection and the Design, Integration and Control of Organic Rankine Cycles—A Review

Thermodynamic analyses and sustainability assessment of solar-based organic Rankine cycle

Energy, Exergy and Performance Analysis of Small-Scale Organic Rankine Cycle Systems for Electrical Power Generation Applicable in Rural Areas of Developing Countries

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