Optimizations of the organic Rankine cycle-based domestic CHP using biomass fuel

Jang, Yongtae; Lee, Jaeseon

doi:10.1016/j.enconman.2018.01.025

Cited by 55 publications

(10 citation statements)

References 25 publications

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“…The system's economic cost is also an important performance index, especially for some small or microscale systems. 41 To obtain some preliminary estimation results about the economic performance difference of the ORC, OFC, and OFRC, the cost function method is used to roughly calculate the investment cost of the system. Therefore, the total investment cost of the system, C tot , can be calculated by…”

Section: Economic Modelmentioning

confidence: 99%

Analysis and assessment of a novel organic flash Rankine cycle (OFRC) system for low‐temperature heat recovery

Wang

Macián‐Juan

2022

Energy Science & Engineering

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In this paper, a novel organic flash Rankine cycle (OFRC) system for lowtemperature heat recovery is analyzed and optimized using the 3E (energy, exergy, and economic) analysis method and particle swarm optimization algorithm, respectively. Five environmentally friendly organic fluids and three typical heat source conditions are simultaneously discussed during the parametric analysis and optimization process, to obtain a comprehensive understanding of the thermo-economic characteristics of this novel system.The main analysis results show that the biggest exergy loss of the OFRC system is caused by the condenser, followed by the evaporator. About 70% of the specific power cost is caused by the capital investment of the system, and more than 60% of the capital investment is spent on purchasing the highpressure and low-pressure expanders. Under the same operating conditions, the working fluids with high critical temperatures can achieve higher cycle thermal efficiency and lower specific power costs than those with low critical temperatures. The optimization results show that the OFRC system is able to achieve a better thermodynamic performance than the organic Rankine cycle (ORC) and organic flash cycle (OFC) systems, and when the heat source's inlet temperature is set to 100°C, 120°C, and 140°C, R245fa, R290, and R152a are, respectively, recommended as the best working fluid for the OFRC system.Besides this, it is found that the OFC system has the worst thermo-economic performance, and the ORC system can achieve the lowest specific power cost.A new finding is that, for all three systems, the higher the critical temperature of the working fluid, the lower the specific power cost of the system.

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Section: Economic Modelmentioning

confidence: 99%

Analysis and assessment of a novel organic flash Rankine cycle (OFRC) system for low‐temperature heat recovery

Wang

Macián‐Juan

2022

Energy Science & Engineering

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“…With respect to this promising cogeneration system, biomass-fired organic Rankine cycles (ORCs) represent an attractive solution for sustainable and reliable energy supply in distributed power generation applications [3], where traditional plants are technologically and economically unfeasible. Liu et al [4] presented a thermodynamic model of biomass-fired CHP system with ORC, and found that the electrical efficiency is predicted to be within the range of 7.5-13.5%, mainly depending on the hot water temperature from biomass boiler.…”

Section: Introductionmentioning

confidence: 99%

Thermo-Economic Analysis of Biomass-Fired ORC Combined Heat and Power System Versus Pinch Point Location

Zhu¹,

Wang²,

Quoilin

et al. 2020

Preprint

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“…Organic Rankine cycles (ORCs), natural gas Direct Expansion (DE) are popular power generation technologies to utilize LNG cold exergy [5]. ORCs have been widely used for industrial waste heat recovery [6], geothermal energy utilization [7], and biomass utilization [8]. High-pressure natural gas can expand directly to target pressure to generate power.…”

Section: Introductionmentioning

confidence: 99%

A study of working fluids for Organic Rankine Cycles (ORCs) operating across and below ambient temperature to utilize Liquefied Natural Gas (LNG) cold energy

Kim

Gundersen

2019

Energy

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Liquefied Natural Gas (LNG) contains a significant amount of cold exergy, which is normally wasted during regasification at the receiving terminals. In recent years, organic Rankine cycles (ORCs) are proposed to exploit the LNG cold energy. This paper addresses the working fluid screening for an ORC utilizing LNG cold energy. Due to the cryogenic temperature of LNG, the condensation temperature of an ORC should be far below the ambient temperature, and the working fluid should be totally different from that for conventional ORCs operating above the ambient temperature. However, the working fluids also depend on the cycle configuration and the natural gas target pressure.In this study, 22 working fluids are investigated. A simulation-based optimization framework is proposed to compare the performance of all the candidates. The Particle Swarm Optimization (PSO) algorithm is adopted to optimize 5 and 7 dimensional search spaces for the combined systems operated across and below the ambient temperature.Promising working fluids for ORCs operated across and below the ambient temperature considering the effect of LNG target pressures are suggested based on the simulationbased optimization results. The most energy efficient working fluids are R125, R143a, R290 and R1270 for ORCs operated below the ambient temperature without waste heat utilization. For ORCs operated across the ambient temperature utilizing flue gas waste heat from a natural gas fired power plant, R170, R134a and R290 perform better than other working fluids.

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Optimizations of the organic Rankine cycle-based domestic CHP using biomass fuel

Cited by 55 publications

References 25 publications

Analysis and assessment of a novel organic flash Rankine cycle (OFRC) system for low‐temperature heat recovery

Analysis and assessment of a novel organic flash Rankine cycle (OFRC) system for low‐temperature heat recovery

Thermo-Economic Analysis of Biomass-Fired ORC Combined Heat and Power System Versus Pinch Point Location

A study of working fluids for Organic Rankine Cycles (ORCs) operating across and below ambient temperature to utilize Liquefied Natural Gas (LNG) cold energy

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