Development of a hybrid solar thermal power plant with new collector field, and its thermal and exergy analyses

Javadzadeh, Elahe; Baghernejad, A.

doi:10.1007/s40430-022-03359-4

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The pressure and temperature of the environmental state (Point 0) in this paper is 0.1013MPa and 293.15K, respectively. The exergy balance equations are as follow [19][20] :…”

Section: Exergy Balancementioning

confidence: 99%

Performance Analysis and Optimization of Heat Pump Steam Generator System Based on Exergy Analysis

Shuaiqi¹,

Li²,

He³

et al. 2022

Preprint

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It has becoming a developing trend to replace boilers with heat pumps driven by electricity under the global carbon neutrality strategy. The exergy loss and thermal performance of the conventional circulating flash heat pump steam generator (CF-SGHP) system were researched. A new direct evaporative heat pump steam generator (DE-SGHP) system was proposed in order to reduce total exergy loss. Then the exergy loss and thermal performance of the two systems was analyzed comparatively under different discharge steam temperature (T out ), condensation temperature (T cond ) and heat source water temperature (T hsw ). The results are as follows: The exergy efficiency (ƞ ex,sys ) of the CF-SGHP system is 62.98%. In addition to the exergy loss caused by the irreversible process of the compressor, the relative maximum exergy loss occurred in the flash cycle process, whose exergy loss rate is 23.24%; The exergy loss of DE-SGHP system is always lower and the COP is always higher than that of the CF-SGHP system within the range of T out , T cond and T hsw ; There existed an optimal T cond of 91 ℃ in the DE-SGHP system to maximum the ƞ ex,sys of 67.74% and the COP of 2.71 when T out is 165℃ and T hsw is 60℃, that indicated to have a broader development prospect.

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“…The pressure and temperature of the environmental state (Point 0) in this paper is 0.1013MPa and 293.15K, respectively. The exergy balance equations are as follow [19][20] :…”

Section: Exergy Balancementioning

confidence: 99%

Performance Analysis and Optimization of Heat Pump Steam Generator System Based on Exergy Analysis

Shuaiqi¹,

Li²,

He³

et al. 2022

Preprint

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“…Ahamad et al [29] optimized a solar Rankine cycle with three refrigerants, enhancing energy efficiency to 75.07% and reducing power costs by 68% while increasing ecological efficiency by 16%, with significant exergy losses in the receiver, heliostat, and turbine. Javadzadeh and Baghernejad [30] enhanced a hybrid solar thermal power plant (STPP) by integrating a Luz system (LS-3) collector, which increased the turbine's steam temperature to reduce exergy destruction from 6.61 MW to 3.1 MW and raised exergy efficiency from 7% to 11.97%. Adibhatla and Kaushik [31] found that integrating solar energy into a natural gas CCPP using DSG and PTCs increased output by 7.84%, improved efficiencies to 53.79% and 27.39%, and reduced electricity costs from 0.074 to 0.067 USD/kWh.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic and Environmental Impact Analysis of a 50 MW Solar-Powered Rankine Cycle System

Akroot,

Al Shammre

2024

Processes

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The interest in combined heat and solar power (CHP) systems has increased due to the growing demand for sustainable energy with low carbon emissions. An effective technical solution to address this requirement is using a parabolic trough solar collector (PTC) in conjunction with a Rankine cycle (RC) heat engine. The solar-powered Rankine cycle (SPRC) system is a renewable energy technology that can be relied upon for its high efficiency and produces clean energy output. This study describes developing a SPRC system specifically for electricity generation in Aden, Yemen. The system comprises parabolic trough collectors, a thermal storage tank, and a Rankine cycle. A 4E analysis of this system was theoretically investigated, and the effects of various design conditions, namely the boiler’s pinch point temperature and steam extraction from the high-pressure turbine, steam extraction from the intermediate-pressure turbine, and condenser temperature, were studied. Numerical simulations showed that the system produces a 50 MW net. The system’s exergetic and energy efficiencies are 30.7% and 32.4%. The planned system costs 2509 USD/h, the exergoeconomic factor is 79.43%, and the system’s energy cost is 50.19 USD/MWh. The system has a 22.47 kg/MWh environmental carbon footprint. It is also observed that the performance of the cycle is greatly influenced by climatic circumstances. Raising the boiler’s pinch point temperature decreases the system’s performance and raises the environmental impact.

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Performance analysis of an advanced concentrated solar power system for environmental benefit: energy and exergy analysis

Patel,

Malviya,

Soni

et al. 2024

Int. J. Environ. Sci. Technol.

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Development of a hybrid solar thermal power plant with new collector field, and its thermal and exergy analyses

Cited by 5 publications

References 25 publications

Performance Analysis and Optimization of Heat Pump Steam Generator System Based on Exergy Analysis

Performance Analysis and Optimization of Heat Pump Steam Generator System Based on Exergy Analysis

Techno-Economic and Environmental Impact Analysis of a 50 MW Solar-Powered Rankine Cycle System

Performance analysis of an advanced concentrated solar power system for environmental benefit: energy and exergy analysis

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