Application of the Multi-Vane Expanders in ORC Systems—A Review on the Experimental and Modeling Research Activities

Kolasiński, Piotr

doi:10.3390/en12152975

Cited by 18 publications

(9 citation statements)

References 60 publications

(99 reference statements)

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“…Figure 26 shows the components of a vane expander. Based on the available literature [156][157][158][159], it can be stated that vane expanders are devices on a rather smaller scale. The maximum currently available units, when coupled with the ORC system, reach the power of 7.5 kW.…”

Section: Vane Expandersmentioning

confidence: 99%

Modern Small and Microcogeneration Systems—A Review

2021

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Small and micro energy sources are becoming increasingly important in the current environmental conditions. Especially, the production of electricity and heat in so-called cogeneration systems allows for significant primary energy savings thanks to their high generation efficiency (up to 90%). This article provides an overview of the currently used and developed technologies applied in small and micro cogeneration systems i.e., Stirling engines, gas and steam microturbines, various types of volumetric expanders (vane, lobe, screw, piston, Wankel, gerotor) and fuel cells. Their basic features, power ranges and examples of implemented installations based on these technologies are presented in this paper.

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Section: Vane Expandersmentioning

confidence: 99%

Modern Small and Microcogeneration Systems—A Review

2021

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“…Research and development studies on this type of domestic power systems are carried out in different research and development units around the world [25], including the Department of Thermodynamics and Renewable Energy Sources of Wrocław University of Science and Technology. The integration of a gas central heating boiler with a power generating unit is usually done by redesigning the boiler into a home CHP micro power plant.…”

Section: Fuel Typementioning

confidence: 99%

“…Therefore, they fit better to small scale ORCs. Piston [55][56][57][58][59][60][61], screw [62][63][64][65][66], scroll [67][68][69][70][71][72][73], lobe [74,75] and multi-vane [25] expanders can be applied in domestic ORCs. These expanders are at different stage of development.…”

Section: Design Considerations and Comparison Of Different Domestic Cmentioning

confidence: 99%

“…Their possible application in such systems is currently being investigated by many researchers. The pressure expansion ratio of a multi-vane expander typically ranges between 3 and 5 and power output ranges from 1 to 10 kW [25]. Multi-vane expanders combine in one design the best features of turbines and volumetric machines.…”

Section: Design Considerations and Comparison Of Different Domestic Cmentioning

confidence: 99%

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Domestic Organic Rankine Cycle-Based Cogeneration Systems as a Way to Reduce Dust Emissions in Municipal Heating

Kolasiński

2020

Energies

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Environmental issues are nowadays of great importance. In particular air and water quality should be kept at as high levels as possible. Energy conversion systems and devices which are applied for converting the chemical energy contained in different fuels into heat, electricity and cold in the industry and housing are sources of different gases and solid particle emissions. Medical data show PM2.5 dust in particular is highly dangerous for human health. Therefore, limiting the number of low-quality fuel combustion processes is a key issue of modern energy policy. Statistical data show that domestic heating systems account for a large share of the total emissions of PM2.5 and PM10 dust. For example in Poland in 2017, the share of households in the total annual emissions of PM2.5 dust was equal to ca. 35.8%, while the share of PM2.5 emission in industry (i.e., power generating plants, industrial power plants and technologies) was equal to only 23.6%. A possible way of solving this problem is by the successful replacement of old domestic furnaces by combined heat and power (CHP) or multigeneration boilers which can be used for heating the rooms and sanitary water and generating electricity and cold. Such systems can possibly contribute in the future to significant reductions of dust emissions and air pollution in urban and rural areas by limiting the number of low-quality fuel combustion processes. This article presents design considerations and experimental results related to a domestic micro-CHP unit which is based on organic Rankine cycle (ORC) technology. The main aim of the design works and experiments was therefore the analysis of the possibility of integrating the ORC system with a standard domestic central heating gas-fired boiler. The specially designed micro-ORC system was implemented in the laboratory and experiments were performed using this test stand. The main design aims of the test-stand were: low operating pressure, small working fluid flow, low price and compact dimensions. To meet these aims, volumetric machines were chosen as the expander and working fluid pump. The experimental results were positive and show that it is possible to integrate an ORC system with a standard domestic central heating gas boiler. For different heat source temperatures, the obtained expander power ranged from 109 W to 241 W and the thermodynamic cycle efficiency ranged from 4.3% to 8.8%. These positive research results were achieved partly thanks to the positive features of the different system subassemblies.

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“…Piotr. K [6] presented a review study on the multi-vane expander applications. It was concluded that it is suitable for limited applications with low cost for manufacturing and it can work in low pressure.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of Organic Rankine cycle system by using R141b as working fluid

Kareem

Al-Hamadan²

2020

ejuow

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Organic Rankine cycle (ORC) is one of the renewable energy to generate power at low temperatures; however, the thermal and physical properties data of the working fluid in this system are limited. In this regards, the experimental study by using R-141b as the working fluid and hot water (i.e. 50°C and 90°C) on the ORC system was conducted in order to evaluate the ORC performance via changing temperatures. Further, the air compressor was modified to act as a multi-vane expander in the ORC system. Energy and exergy analysis of ORC system was done by using Engineering Equation Solver (EES) program. It was found that the performance of the expander is acceptable and suitable for operating conditions. In addition, the heat source temperature has a direct effect on expander performance. The higher temperatures of the heat source led to an increase the expander inlet temperature. This system satisfied maximum thermal and exergy efficiency and they found equal to 1.8 % and 21%, respectively. Moreover, the rotation speed and power of expander are equal to 1200 RPM and 2.331 kW respectively. It was concluded that the working fluid R-141b is suitable for ORC system due to consider the working fluid that do not need high temperatures to evaporate.

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Application of the Multi-Vane Expanders in ORC Systems—A Review on the Experimental and Modeling Research Activities

Cited by 18 publications

References 60 publications

Modern Small and Microcogeneration Systems—A Review

Modern Small and Microcogeneration Systems—A Review

Domestic Organic Rankine Cycle-Based Cogeneration Systems as a Way to Reduce Dust Emissions in Municipal Heating

Experimental study of Organic Rankine cycle system by using R141b as working fluid

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