Power generation with ORC machines using low-grade waste heat or renewable energy

Minea, Vasile

doi:10.1016/j.applthermaleng.2014.04.054

Cited by 78 publications

(33 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, Declaye et al [29] investigated the performance of scroll expender in the ORC system with R245fa by experiment. Later, Minea [30] studied a 50 kW ORC system operated with R245fa as the working fluid to generate power using heat sources at temperature range of 85 Ce116 C. In brief, from above literature, the results of performance analysis and working fluids selection in the ORC are tabulated with various heat sources, as shown in Table 1(a). Furthermore, to evidently highlight the acceptance for environment protection of the working fluids, Table 1(b) shows the ODP and GWP values of the working fluids recommended or investigated in previous works.…”

Section: Introductionmentioning

confidence: 99%

Economic performances optimization of an organic Rankine cycle system with lower global warming potential working fluids in geothermal application

Yang

Yeh

2016

Renewable Energy

View full text Add to dashboard Cite

a b s t r a c tThe aim of this study is to investigate the economic optimization for an ORC system utilizing the geothermal energy. An economic parameter of net power output index, which is the ratio of net power output to the total cost, is proposed to optimize the ORC system using zero ODP and lower GWP working fluids. The maximum net power output index is obtained and the corresponding optimal pinch point temperature differences of heat exchangers are also evaluated for the ORC system. Furthermore, the analyses of the corresponding operating temperatures and pressures on the optimal economic performances of the ORC system are carried out. The effects of turbine inlet temperatures and their corresponding optimization are also discussed. The results show that R600 performs the most satisfactorily followed by R600a, R1233zd, R1234yf, R1234ze, and R290 under economic performance optimization. Moreover, the pinch point temperature differences in the evaporator vary more significantly than those in the condenser in optimal economic evaluations. The ORC system operated with R600, R600a, and R1233zd would have reductions in the proportion of equipment purchased cost from large to small attributed to lower operating pressures.

show abstract

Section: Introductionmentioning

confidence: 99%

Economic performances optimization of an organic Rankine cycle system with lower global warming potential working fluids in geothermal application

Yang

Yeh

2016

Renewable Energy

View full text Add to dashboard Cite

show abstract

“…In light of the continuing shift towards sustainable industrial systems, low to medium grade heat to power conversion has become of increasing importance for low emissions electricity supply [1][2][3]. Low to medium temperature heat source streams can be found in many systems including industrial processes, geothermal energy, biomass, and solar energy [4].…”

Section: Introductionmentioning

confidence: 99%

Power Generation Targets from Hot Composite Curves

Al-Ani

Linke

2018

Energies

View full text Add to dashboard Cite

Abstract:The paper proposes a simple systematic procedure to target thermodynamic power generation limits from a set of heat source streams. The procedure takes the form of an algebraic targeting approach commonly applied in process heat integration. It allows the designer to quickly determine the maximum amount of power that can theoretically be generated from the available heat in thermodynamic cycles. The paper describes the procedure and is applicability in the context of common data availability for heat source streams in the form of a Composite Curve or Total Site Profile (hot composite curves) commonly developed in heat integration. The application of the procedure is illustrated with examples.

show abstract

“…According to the authors of this article, small ORC systems achieve very high overall efficiency exceeding 90%. Examples of systems for combined heat and electricity generation, which are still at the research stage, were also presented in other articles, e. g. [23][24][25]. Article [23] shows in detail the research on the system with a vapour micro-turbine integrated with outer gear and electricity generator.…”

Section: Introductionmentioning

confidence: 99%

“…The process of designing the CHP system with a spiral expander and electric capacity of 1 kW was discussed in publication [24]. The tests of ORC system having a heat output of 50 kW with screw expander were presented in article [25]. Literature concerning small ORC systems also pays much attention to modelling of such systems [26,27] as well as economic analyses [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Prototype of the domestic CHP ORC energy system

Kiciński¹,

Żywica²

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

View full text Add to dashboard Cite

Abstract. The Institute of Fluid-Flow Machinery (IMP PAN) in Gdansk pursues its own research in fields such as technologies that use renewable energy sources efficiently, including in particular the small-scale combined heat and power (CHP) systems. This article discusses the design concepts for the prototype of small CHP ORC (organic Rankine cycle) energy system, developed under the research project. The source of heat is a boiler designed for biomass combustion. Electricity was generated using specially designed oil-free vapour micro-turbine. The turbo-generator has compact structure and hermetical casing thanks to the use of gas bearings lubricated by working medium. All energy system components are controlled and continuously monitored by a coherent automation and control system. The article also discusses selected experimental results conducted under laboratory conditions. Thermal-flow tests were presented that allow for an assessment of the operation of energy system components. Additionally, energy performance results of the turbo-generator were given including power obtained at various cycle parameters. The achieved results have shown that the developed energy system operated in accordance with design solutions. Electricity derived from the energy system prototype was around 2 kW, with boiler's thermal power of 25 kW. The research has also confirmed that this system can be used in a domestic environment.

show abstract

Power generation with ORC machines using low-grade waste heat or renewable energy

Cited by 78 publications

References 8 publications

Economic performances optimization of an organic Rankine cycle system with lower global warming potential working fluids in geothermal application

Economic performances optimization of an organic Rankine cycle system with lower global warming potential working fluids in geothermal application

Power Generation Targets from Hot Composite Curves

Prototype of the domestic CHP ORC energy system

Contact Info

Product

Resources

About