Review
Energy & Fuels
Pranjal Kumar, Onkar Singh
Summary: The power sector is focused on developing newer thermodynamic systems for higher efficiency and output, with direct energy conversion systems being seen as suitable options for power generation. Solid oxide fuel cells, when combined with other energy systems, can increase total output and improve overall performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Gang Xiao, Jinli Chen, Mingjiang Ni, Kefa Cen
Summary: The study proposes a solar MGT system combined with steam injection and ORC to improve efficiency and flexibility, validated through experimental and referenced data. By optimizing design and operating parameters, the system shows significant improvement in efficiency and flexibility, which is beneficial for distributed energy systems, especially in remote areas or islands.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Jun Liu, Hao Sun, Heng Chen, Wenchao Li, Peiyuan Pan, Lining Wu, Gang Xu, Wenyi Liu
Summary: To optimize the biogas power generation process and waste tire disposal, a novel polygeneration system combining fuel cell and gas turbine technology, tire pyrolysis reactor, organic Rankine cycle, and waste heat recovery subsystem has been proposed. A comprehensive case study has demonstrated the technological and economic feasibility of the system, with a net energy efficiency of 70.11% and an exergy efficiency of 69.65%. The proposed system has a low initial investment of 722.93 k$ and can be recovered in 5.09 years, making it highly promising for implementation.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Jinbo Qu, Yongming Feng, Yuanqing Zhu, Song Zhou, Wenping Zhang
Summary: In the context of global decarbonization, there is increasing focus on improving the energy efficiency of marine power plants, with the use of a high-efficiency waste heat recovery system that can generate up to 1,079.1 KW of power at 100% load. The system demonstrated stable operation and high thermal efficiency and exergy efficiency at 90% load. Further techno-economic evaluation showed a payback period of 5.2 years for the system.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Mahmood Chahartaghi, Reza Namdarian, Seyed Majid Hashemian, Rahmat Malek, Seyedesmail Hashemi
Summary: The study evaluates a new configuration of a combined cooling, heating, and power (CCHP) system with a steam turbine, considering important performance parameters and environmental impacts. The results show significant reductions in carbon dioxide emissions, fuel consumption, and operating costs compared to conventional systems, with an overall improvement in system performance.
ENERGY SCIENCE & ENGINEERING
(2021)
Article
Energy & Fuels
Jing Bian, Hanfei Zhang, Liqiang Duan, Umberto Desideri, Yongping Yang
Summary: This article proposes a new system integrated with gas turbine, MCFC and ORC for CO2 capture. The system effectively reduces the energy consumption of CO2 capture and improves the thermal and economic performances compared to traditional methods.
Article
Chemistry, Physical
Amirmohammad Behzadi, Ali Habibollahzade, Ahmad Arabkoohsar, Bahman Shabani, Iman Fakhari, Mehrdad Vojdani
Summary: This article presents an innovative combined heat and power system comprising a SOFC, a heat recovery unit, and an APC. The optimization can increase system efficiencies and reduce total costs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Amit Bhowmick, Balaram Kundu
Summary: A new system for waste heat recovery process, which combines cooling and power cycle, is proposed in this study. The thermodynamic and economic viability of the system is comprehensively analyzed. The results show that the combustion chamber is the major source of irreversibility and there is potential for improvement. A parametric study is conducted to assess the effect of major design parameters, and a multi-objective optimization is performed to determine the overall exergy efficiency and total product cost. The findings provide insights for practical applications and cost-effectiveness.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Jie Ren, Zuoqin Qian, Chunguang Fei, Ding Lu, Yincai Zou, Chen Xu, Lu Liu
Summary: Integrating biomass energy into existing fossil fuel power plants is a practical solution for energy shortages and environmental problems. A novel combined cooling and power system based on the organic Rankine cycle and absorption refrigeration cycle is proposed for waste heat recovery. Comprehensive analysis shows promising thermodynamic, exergoeconomic, and exergoenvironmental performance. Parametric analysis reveals the impact of various factors on system efficiency and cost. A tri-objective optimization is conducted, resulting in an optimal solution for engineering practice.
Article
Thermodynamics
Yunyuan Li, Wenyu Li, Xinyue Gao, Xiang Ling
Summary: Researchers focus on the coupled design and optimization of high-temperature organic Rankine cycle (ORC) system and radial-inflow turbine (RIT), exploring the relationship between turbine performance, thermal efficiency, and size. Siloxane mixtures are proven to be more efficient but require larger turbine and heat exchanger size, while cyclohexane, toluene, m-xylene and hexane are identified as promising working fluids for applications where compact turbine and heat exchanger are needed, such as vehicle waste heat recovery.
APPLIED THERMAL ENGINEERING
(2021)
Article
Environmental Sciences
Tzu-Chia Chen, T. Ch. Anil Kumar, Ngakan Ketut Acwin Dwijendra, Ali Majdi, Abdul Rab Asary, Acim Heri Iswanto, Imran Khan, Dag Oivind Madsen, Reza Alayi
Summary: In this study, the authors investigated the thermodynamic performance of a combined gas turbine system that utilized a tubular solid oxide fuel cell and hydrogen fuel. By separately modeling each component using thermodynamic relations, it was found that as turbine inlet temperature increased, the system's efficiency decreased while power output increased. Additionally, increasing temperature and pressure ratio led to higher entropy production and greater irreversibility in the system. The research results showed that the combustion chamber and fuel cell contributed to 65% of the system's irreversibility, while the heat exchanger contributed to 19%. Furthermore, the combined system achieved an efficiency of 9.81%, highlighting its exceptional performance compared to a system without a fuel cell, which had an efficiency of 33.4%.
Article
Energy & Fuels
T. Sathish, C. Sailaja, R. Saravanan, Pelluru Suresh, M. Anish, M. Rajasimman, Usha Sambath, N. Sabarirajan, K. Muthukumar, Sang-Woo Joo, Yasser Vasseghian
Summary: Sustainable energy development is a globally important research area that requires effective design processes and sustainable energy sources. A study conducted experiments using a solar heating system with two-parabolic trough collectors (PTC) to operate a Rankine cycle-based fuel cell for hydrogen production. The results showed that by optimizing the heat transfer rate and using a flow rate of 0.38 kg/s for the heat transfer fluid (HTF), the system achieved a thermal efficiency of 82% and a heat gain of 27589 kW. Increasing the flow velocity of the HTF improved both the solar collector's efficiency and the electrical energy output for the fuel cell, resulting in higher hydrogen production rates. The study also conducted a preliminary cost analysis using the solar advisor model (SAM) to determine the electric cost of the integrated system.
Article
Thermodynamics
Hong-Hu Zhang, Ming-Jia Li, Yong-Qiang Feng, Huan Xi, Tzu-Chen Hung
Summary: The feasibility of the combined steam Rankine cycle-Organic Rankine cycle system was investigated and verified through comparing and screening different working fluids. It was found that the addition of a regenerator can effectively improve the NPI of the ORC system. The combined system using ammonia and R600 as working fluid showed the largest NPI values.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Huseyin Yagli, Yildiz Koc, Huseyin Kalay
Summary: The study found that using benzene as the working fluid performs best at turbine inlet pressure between 10 and 25 bar, while R123 shows the highest performance above 25 bar. Though ORC with R123 has the highest net power production, the payback period is shortest with R11. Additionally, at these ORC turbine inlet parameters, the cogeneration system has the highest thermal efficiency and exergy efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Can Liu, Guokun Liu, Yanzhou Qin, Yuan Zhuang
Summary: Proton exchange membrane fuel cell (PEMFC) is a promising alternative power source with advantages of quiet operation, low emission, and high theoretical energy conversion efficiency. However, a significant portion of the energy is dissipated by the cooling system. Utilizing an organic Rankine cycle (ORC) system to recover thermal energy from the cooling system can improve the practical performance of PEMFC, with R134a demonstrating higher cycle efficiency compared to R245fa.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2021)
