Construction and dynamic test of a small-scale organic rankine cycle

Pei, Gang; Li, Jing; Li, Lili; Wang, Dongyue; Ji, Jie

doi:10.1016/j.energy.2011.03.010

Cited by 188 publications

(63 citation statements)

References 25 publications

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“…Lemort [14] hold the idea that the internal leakages, the supply pressure drop and mechanical losses are the main losses affecting the performance of the scroll expander according to their analysis. Pei [15,16] studied ORC with a radial flow turbine of kW-scale. In the system of power generation with low temperature energy, radial flow turbine shows good performance.…”

Section: Introductionmentioning

confidence: 99%

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Pan

Wang

2013

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 99%

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Pan

Wang

2013

Applied Thermal Engineering

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“…(12) (13) (14) With regard to bottom cycle 1'-2-3-4'-1', the efficiency must decrease when it is combined with the upper cycle, which is a NWC, to construct cycle 1-2-3-4-1. Then: (15) Equation (15) shows that although the evaporating pressure and the evaporating temperature in ORC 1-2-3-4-1 are both higher, the efficiency is lower than that of bottom cycle 1'-2-3-4'-1'.…”

Section: 'S Vtmentioning

confidence: 99%

“…Pei et al [14] created an experimental ORC system, in which a turbo expander was adopted to generate work. The shaft power was about 1 kW and the system efficiency achieved 6.8%.…”

Section: Introductionmentioning

confidence: 99%

Study on the Characteristics of Expander Power Output Used for Offsetting Pumping Work Consumption in Organic Rankine Cycles

Lei

et al. 2014

Energies

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Abstract:The circulation pump in an organic Rankine cycle (ORC) increases the pressure of the liquid working fluid from low condensing pressure to high evaporating pressure, and the expander utilizes the pressure difference to generate work. A portion of the expander output power is used to offset the consumed pumping work, and the rest of the expander power is exactly the net work produced by the ORC system. Because of the relatively great theoretical pumping work and very low efficiency of the circulation pump reported in previous papers, the characteristics of the expander power used for offsetting the pumping work need serious consideration. In particular, the present work examines those characteristics. It is found that the characteristics of the expander power used for offsetting the pumping work are satisfactory only under the condition that the working fluid absorbs sufficient heat in the evaporator and its specific volume at the evaporator outlet is larger than or equal to a threshold value. OPEN ACCESSEnergies 2014, 7 4958

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“…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%

“…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. The process of designing the CHP system with a spiral expander and electric capacity of 1 kW was discussed in publication [24].…”

Section: Introductionmentioning

confidence: 99%

Prototype of the domestic CHP ORC energy system

Kiciński¹,

Żywica²

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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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.

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Construction and dynamic test of a small-scale organic rankine cycle

Cited by 188 publications

References 25 publications

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Improved analysis of Organic Rankine Cycle based on radial flow turbine

Study on the Characteristics of Expander Power Output Used for Offsetting Pumping Work Consumption in Organic Rankine Cycles

Prototype of the domestic CHP ORC energy system

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