Simulation and economic analysis of a CPV/thermal system coupled with an organic Rankine cycle for increased power generation

Kosmadakis, George; Manolakos, Dimitris; Papadakis, G.

doi:10.1016/j.solener.2010.11.019

Cited by 130 publications

(40 citation statements)

References 53 publications

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“…Reviewing the literature reveals a variety of approaches used to evaluate ORC investment costs. Some assume a value for the ORC costs (such as [20][21][22][23][24][25][26]). However representative the assumptions and insightful the analyses, these cost figures ought not to be confused with real costs.…”

Section: Orc Investment Costs: a Brief Literature Reviewmentioning

confidence: 99%

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Lemmens

2016

Energies

120

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Abstract:The potential of organic Rankine cycle (ORC) systems is acknowledged by both considerable research and development efforts and an increasing number of applications. Most research aims at improving ORC systems through technical performance optimization of various cycle architectures and working fluids. The assessment and optimization of technical feasibility is at the core of ORC development. Nonetheless, economic feasibility is often decisive when it comes down to considering practical instalments, and therefore an increasing number of publications include an estimate of the costs of the designed ORC system. Various methods are used to estimate ORC costs but the resulting values are rarely discussed with respect to accuracy and validity. The aim of this paper is to provide insight into the methods used to estimate these costs and open the discussion about the interpretation of these results. A review of cost engineering practices shows there has been a long tradition of industrial cost estimation. Several techniques have been developed, but the expected accuracy range of the best techniques used in research varies between 10% and 30%. The quality of the estimates could be improved by establishing up-to-date correlations for the ORC industry in particular. Secondly, the rapidly growing ORC cost literature is briefly reviewed. A graph summarizing the estimated ORC investment costs displays a pattern of decreasing costs for increasing power output. Knowledge on the actual costs of real ORC modules and projects remains scarce. Finally, the investment costs of a known heat recovery ORC system are discussed and the methodologies and accuracies of several approaches are demonstrated using this case as benchmark. The best results are obtained with factorial estimation techniques such as the module costing technique, but the accuracies may diverge by up to +30%. Development of correlations and multiplication factors for ORC technology in particular is likely to improve the quality of the estimates.

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Section: Orc Investment Costs: a Brief Literature Reviewmentioning

confidence: 99%

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Lemmens

2016

Energies

120

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“…The thermal resistance of the metallic substrate, r sub , is typically orders of magnitude lower than the one of the fluid. The fluid heat transfer coefficient, h fluid , is calculated using the following correlation [35]: (17) Finally, the heat transfer effectiveness is [36]: (18) The energy balance for the considered heat exchanger is: (18) where T sub is the temperature of the metallic substrate. …”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…The perspective of using high temperature PVT is very interesting since it extends the number of possible applications. An example consists in the use of the high-temperature heat provided by the PVT to drive heat engines (Stirling engines [16] or an Organic Rankine Cycle, ORC [17]) or a Solar Heating and Cooling system [14].…”

Section: Introductionmentioning

confidence: 99%

Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Calise

Vanoli

2012

Energies

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This paper presents a design procedure and a simulation model of a novel concentrating PVT collector. The layout of the PVT system under investigation was derived from a prototype recently presented in literature and commercially available. The prototype consisted in a parabolic trough concentrator and a linear triangular receiver. In that prototype, the bottom surfaces of the receiver are equipped with mono-crystalline silicon cells whereas the top surface is covered by an absorbing surface. The aperture area of the parabola was covered by a glass in order to improve the thermal efficiency of the system. In the modified version of the collector considered in this paper, two changes are implemented: the cover glass was eliminated and the mono-crystalline silicon cells were replaced by triple-junction cells. In order to analyze PVT performance, a detailed mathematical model was implemented. This model is based on zero-dimensional energy balances. The simulation model calculates the temperatures of the main components of the system and the main energy flows Results showed that the performance of the system is excellent even when the fluid temperature is very high (>100 °C). Conversely, both electrical and thermal efficiencies dramatically decrease when the incident beam radiation decreases.

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“…The outcomes revealed that exploiting the wasted system heat for cooling might lead to greater overall efficiency (Kribus et al, 2006). several examples consist in the use of this high-temperature provided by the CPVT to drive a thermal motor (Vorobiev et al, 2006), an Organic Rankine Cycle (Kosmadakis, 2011) or a Solar Heating and Cooling system . A CPV/T installation based on a dish concentrator was considered for both water desalination and solar cooling applications .…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of a solar system based on concentrating photovoltaic/thermal collector

et al. 2018

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Concentrated photovoltaic thermal (CPV/T) solar collector systems are designed to provide simultaneously thermal and electrical energies. This paper analyzes a numerical model of a photovoltaic thermal collector in order to evaluate its performances from energy and economic viewpoints. Therefore, a two dimensional numerical model has been developed and applied in this study. This electrical/thermal model is based on the energy balance of the CPV/T receiver in order to calculate the net thermal and electrical output energy. A comparison between the numerical results and those obtained by experimental studies is presented in order to prove the viability of our developed model. The results show that the output power predicted by the numerical model has a good agreement with the experimental data with low mean percentage errors. Indeed, the effects of several parameters on the performance of the system were examined and discussed in details. The simulation process has allowed evaluating the power generation of the CPV/T system and performing a comprehensive economic analysis study under Chambery and Tunisia conditions. The CPV/T system has proven its viability and feasibility especially in regions with high solar radiation.

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Simulation and economic analysis of a CPV/thermal system coupled with an organic Rankine cycle for increased power generation

Cited by 130 publications

References 53 publications

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Cost Engineering Techniques and Their Applicability for Cost Estimation of Organic Rankine Cycle Systems

Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Modeling and optimization of a solar system based on concentrating photovoltaic/thermal collector

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