Reciprocating-piston compressors and expanders are promising solutions to achieve higher overall efficiencies in various energy storage solutions. This article presents an experimental study of the exergetic losses in a gas spring. Considering a valveless piston-cylinder system allows us to focus on the thermodynamic losses due to thermal-energy exchange processes in reciprocating components. To differentiate this latter loss mechanism from mass leakages or frictional dissipation, three bulk parameters are measured. Pressure and volume are respectively measured with a pressure transducer and a rotary sensor. The gas temperature is estimated by measuring the Time-Of-Flight (TOF) of an ultrasonic pulse signal across the gas chamber. This technique has the advantage of being fast and non-invasive. The measurement of three bulk parameters allows us to calculate the work as well as the heat losses throughout a cycle. The thermodynamic loss is also measured for different rotational speeds. The results are in good agreement with previous experimental studies and can be employed to validate CFD or analytical studies currently under development.
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ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology
June 26–30, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Advanced Energy Systems Division
- Solar Energy Division
ISBN:
978-0-7918-5023-7
PROCEEDINGS PAPER
Experimental Analysis of Loss Mechanisms in a Gas Spring
Paul Sapin,
Paul Sapin
Imperial College London, London, UK
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Drazen Fabris,
Drazen Fabris
Santa Clara University, Santa Clara, CA
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Alexander J. White,
Alexander J. White
Cambridge University, Cambridge, UK
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Christos N. Markides
Christos N. Markides
Imperial College London, London, UK
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Paul Sapin
Imperial College London, London, UK
Drazen Fabris
Santa Clara University, Santa Clara, CA
Alexander J. White
Cambridge University, Cambridge, UK
Aly Taleb
Imperial College London, London, UK
Christos N. Markides
Imperial College London, London, UK
Paper No:
ES2016-59631, V002T01A013; 8 pages
Published Online:
November 1, 2016
Citation
Sapin, P, Fabris, D, White, AJ, Taleb, A, & Markides, CN. "Experimental Analysis of Loss Mechanisms in a Gas Spring." Proceedings of the ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. Volume 2: ASME 2016 Energy Storage Forum. Charlotte, North Carolina, USA. June 26–30, 2016. V002T01A013. ASME. https://doi.org/10.1115/ES2016-59631
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