Exergy and exergoeconomic analysis of sustainable direct steam generation solar power plants

Elsafi, Amin M.

doi:10.1016/j.enconman.2015.06.066

Cited by 105 publications

(21 citation statements)

References 34 publications

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“…Equipment maintenance should be divided into overhaul and routine maintenance in terms of maintenance purpose, scope, duration, and cost 30 . Due to the high cost of overhaul, its fund is usually drawn termly by year or month, which is represented as follows:…”

Section: Product Costmentioning

confidence: 99%

Exergoeconomic analysis for crude oil gathering and transportation system in matrix pattern

Cheng

Liu

et al. 2019

Energy Science & Engineering

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Based on exergoeconomic theory, the energy consumption situation for a typical oil transfer station in eastern China is evaluated. According to the analysis of the distribution for logistics and exergy flow, the crude oil gathering and transportation system is divided into two subsystems: pipe network and oil transfer station. The unit exergoeconomic costs for each component exergy flow are calculated by computing method in matrix pattern, of which the pressure exergy and thermal exergy at the end of the process are 812.58 yuan/GJ and 1575.24 yuan/GJ, respectively. Simultaneously, exergoeconomic evaluation indicators such as exergy cost growth coefficient, relative cost difference, and exergoeconomic coefficient are calculated, which can conclude the weak link of technical system is heating furnace equipment. The growth value of its exergy cost growth coefficient is 14.988, the relative cost difference is 94.503, and the exergoeconomic coefficient is 9.046, so it has great potential for energy saving. Exergoeconomic analysis method can provide a scientific and effective method or basis during the energy‐saving reconstruction for oil gathering and transportation system.

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Section: Product Costmentioning

confidence: 99%

Exergoeconomic analysis for crude oil gathering and transportation system in matrix pattern

Cheng

Liu

et al. 2019

Energy Science & Engineering

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“…Meanwhile, 4 CSP systems with single scheme are considered as the references, namely, PT (SO), LF (DSG), Tower (MS), and Tower (DSG). [25][26][27] A CSP system is generally comprised of a solar field and a power block. According to the required stages of steam generation, ie, preheating, evaporation, superheating, and reheating, the concentrated solar thermal energy is introduced where it is appropriate.…”

Section: System Configurationsmentioning

confidence: 99%

Comprehensive assessment of line-/point-focus combined scheme for concentrating solar power system

2018

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Summary The line‐/point‐focus combined scheme for concentrating solar power (CSP) system is proposed. For solar field, the parabolic trough (PT) or linear Fresnel (LF) is used as the line‐focus preheating and evaporation stages while the solar tower is used as the point‐focus superheating and reheating stages. The combined schemes benefit from the high concentration ratio of point‐focus technology and low cost of line‐focus technology. Particularly, the combined scheme guarantees the concentrated solar thermal energy matching the temperature requirement of steam generation process with less exergy loss. Performance and economic assessments have been performed for 50 MWe CSP system with two of the combined schemes, ie, PT (synthetic oil, SO) + Tower (molten salt, MS) and LF (direct steam generation, DSG) + Tower (DSG), as well as existing single schemes being the references, ie, PT (SO), LF (DSG), Tower (MS), and Tower (DSG). The comparative results show that the combined schemes are superior to liner‐focus schemes in efficiency and to point‐focus schemes in capital cost and scalability. Specifically, the PT (SO) + Tower (MS) system suggests the favorable potential in practical application with the highest annual net solar‐to‐electrical energy conversion efficiency of 16.07% and the reasonable levelized cost of electricity (LCOE) of 16.121 US cent/(kW·h). This work provides an alternative guidance for future development of the CSP technology.

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“…Thus, thermoeconomic analysis was performed to obtain the cost exergy unit of the product streams [15]. The cost balance was applied to all components using Eqs.…”

Section: System Thermoeconomic Analysismentioning

confidence: 99%

Thermoeconomic and environmental analyses of a low water consumption combined steam power plant and refrigeration chillers-Part 2: Thermoeconomic and environmental analysis

Ifaei

Ataei

2016

Energy Conversion and Management

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Exergy and exergoeconomic analysis of sustainable direct steam generation solar power plants

Cited by 105 publications

References 34 publications

Exergoeconomic analysis for crude oil gathering and transportation system in matrix pattern

Exergoeconomic analysis for crude oil gathering and transportation system in matrix pattern

Comprehensive assessment of line-/point-focus combined scheme for concentrating solar power system

Thermoeconomic and environmental analyses of a low water consumption combined steam power plant and refrigeration chillers-Part 2: Thermoeconomic and environmental analysis

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