Experimental and numerical assessment of an optimised, non-axial wave rotor turbine

Tüchler, Stefan; Copeland, Colin

doi:10.1016/j.apenergy.2020.115013

Cited by 23 publications

(4 citation statements)

References 40 publications

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“…The total pressure efficiency difference ∆η Total between the two modes can be calculated as Equation (17).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, GWE has advantages of high isentropic efficiency, low rotational speed, low manufacturing and operating costs, easy disassembly and maintenance, and a strong capacity to run with liquid and solid. As a result, it has been considered for application in a variety of fields, such as the exploitation of natural gas, refrigeration cycles, and so on [16][17][18][19]. In 1960s, Spalding [20] first proposed the concept of equalizer (the initial name of GWE) and conducted preliminary theoretical researches.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, GWE has advantages of high isentropic efficiency, low rotational speed, low manufacturing and operating costs, easy disassembly and maintenance, and a strong capacity to run with liquid and solid. As a result, it has been considered for application in a variety of fields, such as the exploitation of natural gas, refrigeration cycles, and so on [16][17][18][19]. Due to the issues of both devices mentioned above, the gas wave ejector (GWE) [10] which combines the benefits of expansion-compressor units and static ejector has received more and more attention.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Performance of Collaborative Production Mode for Gas Wave Ejector

Zhao

et al. 2022

Sustainability

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Gas wave ejector (GWE) is an efficient ejection equipment using pressure waves to extract and transfer energy. However, at present, GWE is designed only for single condition, not fully utilizing the production capacity. The collaborative production mode using one equipment to work simultaneously under two different conditions was proposed to resolve this issue in this study, and was analyzed by combining numerical simulation and experimental test. The research results show that the collaborative mode almost has no effects on average total efficiency compared to single mode. In the range of tests, the efficiency difference between two modes is within 4.4%. The state parameters of the stable-pressure region (where channels are closed at both ends) on one condition are the initial parameters of the functional region on the other condition in collaborative mode, accounting for the difference between single and collaborative mode. The variations of performance parameters (ejection rate and the isentropic efficiency) with the medium-port pressure in collaborative mode was similar to that of the single mode. Thus, the performance parameters difference between two modes can be predicted by the relative relationship between the medium-port pressure and the average pressure in stable-pressure region of GWE in single mode. In conclusion, the collaborative mode improves the utilization of equipment while maintaining total efficiency, which can promote the popularization and application of GWE.

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“…The total pressure efficiency difference ∆η Total between the two modes can be calculated as Equation (17).…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Therefore, GWE has advantages of high isentropic efficiency, low rotational speed, low manufacturing and operating costs, easy disassembly and maintenance, and a strong capacity to run with liquid and solid. As a result, it has been considered for application in a variety of fields, such as the exploitation of natural gas, refrigeration cycles, and so on [16][17][18][19]. Due to the issues of both devices mentioned above, the gas wave ejector (GWE) [10] which combines the benefits of expansion-compressor units and static ejector has received more and more attention.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on the Performance of Collaborative Production Mode for Gas Wave Ejector

Zhao

et al. 2022

Sustainability

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show abstract

“…Also, the practical application effects of curved channels in GWEs were veried via comparative experiments. Different from internal combustion wave rotors or gas wave superchargers, which both employ curved channels to provide sha power output, [33][34][35][36] this research focuses on using a curved channel to reduce the energy loss inside a GWE and improve its working efficiency. The research results can play a certain role in promoting theoretical improvements and extending the application of this technology.…”

Section: Introductionmentioning

confidence: 99%