Author
Jiangfeng Wang
Bio: Jiangfeng Wang is an academic researcher from Xi'an Jiaotong University. The author has contributed to research in topics: Organic Rankine cycle & Exergy efficiency. The author has an hindex of 39, co-authored 110 publications receiving 5345 citations.
Topics: Organic Rankine cycle, Exergy efficiency, Turbine, Exergy, Rankine cycle
Papers
More filters
TL;DR: In this paper, the effects of the thermodynamic parameters on the ORC performance were examined, and the optimal performance of different working fluids was compared and analyzed under the same waste heat condition.
709 citations
TL;DR: In this article, an exergy analysis for each cogeneration system is examined, and a parameter optimization for each system is achieved by means of GA to reach the maximum exergy efficiency.
272 citations
TL;DR: In this article, a new combined power and refrigeration cycle is proposed, which combines the Rankine cycle and the ejector refrigeration cycles, and an exergy analysis is performed to guide the thermodynamic improvement for this cycle.
244 citations
TL;DR: In this article, the effects of key thermodynamic design parameters, including turbine inlet pressure, turbine temperature, pinch temperature difference and approach temperature difference, on the net power output and surface areas of both the HRVG and the condenser using R123, R245fa and isobutane.
224 citations
TL;DR: In this article, a multi-objective optimization of the ORC with R134a as working fluid is conducted to achieve the system optimization design from both thermodynamic and economic aspects using Non-dominated sorting genetic algorithm-II (NSGA-II).
210 citations
Cited by
More filters
TL;DR: A comprehensive review of fuel cell science and engineering with a focus on hydrogen fuel cells is provided in this article, where the most current data from industry and academia have been used with the relation between fuel cell fundamentals and applications highlighted throughout the manuscript.
Abstract: This paper provides a comprehensive review of fuel cell science and engineering with a focus on hydrogen fuel cells. The paper provides a concise, up-to-date review of fuel cell fundamentals; history; competing technologies; types; advantages and challenges; portable, stationary, and transportation applications and markets; current status of research-and-development; future targets; design levels; thermodynamic and electrochemical principles; system evaluation factors; and prospects and outlook. The most current data from industry and academia have been used with the relation between fuel cell fundamentals and applications highlighted throughout the manuscript.
1,238 citations
TL;DR: An overview of the different ORC applications is presented in this paper, and an in-depth analysis of the technical challenges related to the technology, such as working fluid selection and expansion machine issues, is reported.
Abstract: New heat conversion technologies need to be developed and improved to take advantage of the necessary increase in the supply of renewable energy. The Organic Rankine Cycle is well suited for these applications, mainly because of its ability to recover low-grade heat and the possibility to be implemented in decentralized lower-capacity power plants. In this paper, an overview of the different ORC applications is presented. A market review is proposed including cost figures for several commercial ORC modules and manufacturers. An in-depth analysis of the technical challenges related to the technology, such as working fluid selection and expansion machine issues is then reported. Technological constraints and optimization methods are extensively described and discussed. Finally, the current trends in research and development for the next generation of Organic Rankine Cycles are presented.
1,219 citations
TL;DR: In this paper, a review of the organic Rankine cycle and supercritical Rankine Cycle for the conversion of low-grade heat into electrical power, as well as selection criteria of potential working fluids, screening of 35 working fluids for the two cycles and analyses of the influence of fluid properties on cycle performance are presented.
Abstract: This paper presents a review of the organic Rankine cycle and supercritical Rankine cycle for the conversion of low-grade heat into electrical power, as well as selection criteria of potential working fluids, screening of 35 working fluids for the two cycles and analyses of the influence of fluid properties on cycle performance. The thermodynamic and physical properties, stability, environmental impacts, safety and compatibility, and availability and cost are among the important considerations when selecting a working fluid. The paper discusses the types of working fluids, influence of latent heat, density and specific heat, and the effectiveness of superheating. A discussion of the 35 screened working fluids is also presented.
1,215 citations
TL;DR: In this article, a comparison of pure and mixture working fluids' applications and a discussion of all types of expansion machines' operating characteristics for an effective organic Rankine cycle system is presented.
Abstract: How to effectively utilize low and medium temperature energy is one of the solutions to alleviate the energy shortage and environmental pollution problems. In the past twenty years, because of its feasibility and reliability, organic Rankine cycle has received widespread attentions and researches. In this paper, it reviews the selections of working fluids and expanders for organic Rankine cycle, including an analysis of the influence of working fluids' category and their thermodynamic and physical properties on the organic Rankine cycle's performance, a summary of pure and mixed working fluids' screening researches for organic Rankine cycle, a comparison of pure and mixture working fluids' applications and a discussion of all types of expansion machines' operating characteristics, which would be beneficial to select the optimal working fluid and suitable expansion machine for an effective organic Rankine cycle system.
1,101 citations
TL;DR: An organic Rankine cycle (ORC) machine is similar to a conventional steam cycle energy conversion system, but uses an organic fluid such as refrigerants and hydrocarbons instead of water as discussed by the authors.
Abstract: An organic Rankine cycle (ORC) machine is similar to a conventional steam cycle energy conversion system, but uses an organic fluid such as refrigerants and hydrocarbons instead of water. In recent years, research was intensified on this device as it is being progressively adopted as premier technology to convert low-temperature heat resources into power. Available heat resources are: solar energy, geothermal energy, biomass products, surface seawater, and waste heat from various thermal processes. This paper presents existing applications and analyzes their maturity. Binary geothermal and binary biomass CHP are already mature. Provided the interest to recover waste heat rejected by thermal devices and industrial processes continue to grow, and favorable legislative conditions are adopted, waste heat recovery organic Rankine cycle systems in the near future will experience a rapid growth. Solar modular power plants are being intensely investigated at smaller scale for cogeneration applications in buildings but larger plants are also expected in tropical or Sahel regions with constant and low solar radiation intensity. OTEC power plants operating mainly on offshore installations at very low temperature have been advertised as total resource systems and interest on this technology is growing in large isolated islands.
1,058 citations