Energy, exergy, economic (3E) analysis, optimization and comparison of different ORC based CHP systems for waste heat recovery

Teng, Shiyang; Wang, Meiwei; Xi, Huan; Wen, Shuqi

doi:10.1016/j.csite.2021.101444

Cited by 31 publications

(8 citation statements)

References 42 publications

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“…The selection of working fluid is a critical factor in enhancing the recovery efficiency of ORC and STORC. [38][39][40] In this study, eight organic fluids are used in ORC and STORC, including hexane, cyclohexane, benzene, toluene, cyclopentane, R123, R600, and R601. In ORC and STORC, the appropriate organic fluid is used based on the performance of organic fluid.…”

Section: Results Of Waste Energy Recovery Technologiesmentioning

confidence: 99%

“…Table A5 and A6 in the appendix show the parameters of ORC and STORC used in hot rolling and sintering, respectively, [36,39,41] and net power generation efficiency and energy efficiency belong to ORC and STORC systems. It is hard to compare the two technologies due to their varied waste heat recovery methods.…”

Section: Results Of Waste Energy Recovery Technologiesmentioning

confidence: 99%

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Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

et al. 2022

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To solve the unreasonable energy distribution and excessive energy waste in the steam system of iron and steel (I&S) industry, a mixed integer linear programming model based on the theory of exergy and energy level is developed in this study to optimize the steam system. After optimization, the utilization potential of waste energy is found. Then, several waste energy recovery technologies are compared according to their application results. The results show that the exergy efficiency of steam system is 74.065%. After optimization, the exergy efficiency of steam system is increased by 10.568%, the energy input of the I&S enterprise is reduced by 84.30 MJ t−1‐CS−1, and waste energy potential is found at hot rolling, sintering, and converter. Herein, flue gas waste heat from hot rolling and sintering is recovered using series two‐stage Organic Rankine Cycle with cyclopentane as the working fluid, and steam waste energy from converter is recovered using saturated steam power generation. These waste energy technologies increase the electricity generation of I&S enterprise by 15.25 kWh t−1‐CS−1. Overall, combining the optimization model with the use of waste energy recovery technologies is necessary and effective for I&S enterprise to increase their energy efficiency.

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Section: Results Of Waste Energy Recovery Technologiesmentioning

confidence: 99%

Section: Results Of Waste Energy Recovery Technologiesmentioning

confidence: 99%

Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

et al. 2022

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“…The influence of the gap thickness, the pipe pitch in the first layer, the outer diameter of the pipe, the number of layers, and the diameter of the central core on the Nusselt number and pressure drop have been studied. The greater thickness of the dividing strip led to an increase in the volume of the flow channel on the side of the housing but a smaller number of Nusselts and a Energies 2023, 16, 4930 3 of 36 decrease in pressure drop per unit length; an increase in the pipe pitch led to a decrease in the number of Nusselts and pressure drop per unit length of the pipe; and an increase in the outer diameter of the pipe led to an increase in the number of Nusselts and pressure drop per unit length in the pipes. The number of layers had a positive effect on the Nusselt number and the pressure drop per unit length of the pipe, while the larger diameter of the central core led to higher Nusselt numbers and pressure drops.…”

Section: Literature Review On the Issue 21 Design Solutions Of Heat E...mentioning

confidence: 99%

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

Osintsev,

Aliukov,

Kuskarbekova

et al. 2023

Energies

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The article presents an overview of modern analytical methods and experimental studies on the use of heat exchangers as part of different schemes, as well as technologies that increase the efficiency of heat exchangers using renewable energy sources. The main types of heat exchangers, and the principles of their operation, are considered. In addition, modern technologies for increasing the efficiency of heat exchangers through design are described. The practical experience of using plate heat exchangers in industry has been studied. An overview of the software development that is used in the design and optimization of heat exchange devices, as well as for the improvement of their energy efficiency, is presented. The presented mathematical models can be used for software that is applicable both to individual segments of plates of heat exchangers and heat exchangers in general, taking into account the dependence of the installation of the entire circuit on environmental parameters and location. In conclusion, recommendations are given for further research directions in the field of using heat exchangers with the inclusion of renewable energy sources. The technique of an energy technology complex, including a heat pump, a photovoltaic panel, and a desalination plant, is presented. The methodology is built around the basic design and energy balance of the complex, and it is also considered from the point of view of the exergetic balance. This allows for the use of additional components, such as a turbo expander for the implementation of the organic Rankine cycle, a wind turbine, and a solar concentrator. This scientific approach can become unified for the design and operation of an energy technology complex. In addition, an exergetic calculation method is presented for a thermal desalination plant operating as part of an energy technology complex with renewable energy sources.

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“…The total power output and the efficiency of the proposed ICE-ORC system can be estimated by the following equations [32,33]:…”

Section: Overall Proposed Ice-orc Systemmentioning

confidence: 99%

Thermodynamic analysis of exhaust heat recovery of marine ice using organic rankine cycle

Wang¹,

Chen²,

Li³

et al. 2023

THERM SCI

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The use of organic Rankine cycle power systems for waste heat recovery on marine internal combustion engines can help to mitigate the greenhouse gases and reduce the fuel consumption of the marine engine. In this paper, the internal combustion engine combined with an organic Rankine cycle system was developed to analyze the performance of waste heat recovery from the exhaust gas of a heavy-duty marine diesel engine via five selected working fluids with low global warming potential and ozone depletion potential. The net output power and thermal efficiency for each of the selected working fluids were obtained. Results indicate that the working fluids of butane have the best performance among the selected working fluids with the power efficiency of the organic Rankine cycle subsystem of 12.27% under the power load of 100%. For the overall proposed system, the maximum net power output is 1048kW and the power efficiency is 36.47%. Besides, the total thermal efficiency of the proposed system was 67.94% when considering the recovered waste energy from jacket water.

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Energy, exergy, economic (3E) analysis, optimization and comparison of different ORC based CHP systems for waste heat recovery

Cited by 31 publications

References 42 publications

Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

Thermodynamic analysis of exhaust heat recovery of marine ice using organic rankine cycle

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