Thermogravitational Cycles: Theoretical Framework and Example of an Electric Thermogravitational Generator Based on Balloon Inflation/Deflation
| dc.rights.license | open | |
| hal.structure.identifier | Sorbonne Université - Faculté de Physique [UFR 925] | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Department of Mechanical Engineering [University College of London] | |
| dc.contributor.author | AOUANE, Kamel | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 3 LCPO : Polymer Self-Assembly & Life Sciences | |
| dc.contributor.author | SANDRE, Olivier | |
| dc.contributor.author | FORD, Ian | |
| dc.contributor.author | ELSON, Tim | |
| hal.structure.identifier | Department of Mechanical Engineering [University College of London] | |
| dc.contributor.author | NIGHTINGALE, Chris | |
| dc.date.accessioned | 2020 | |
| dc.date.available | 2020 | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 2411-5134 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/19942 | |
| dc.description.abstractEn | Several studies have involved a combination of heat and gravitational energy exchanges to create novel heat engines. A common theoretical framework is developed here to describe thermogravitational cycles which have the same efficiencies as the Carnot, Rankine, or Brayton cycles. Considering a working fluid enclosed in a balloon inside a column filled with a transporting fluid, a cycle is composed of four steps. Starting from the top of the column, the balloon goes down by gravity, receives heat from a hot source at the bottom, then rises and delivers heat to a cold source at the top. Unlike classic power cycles which need external work to operate the compressor, thermogravitational cycles can operate as a “pure power cycle” where no external work is needed to drive the cycle. To illustrate this concept, the prototype of a thermogravitational electrical generator is presented. It uses a hot source of average temperature near 57 °C and relies on the gravitational energy exchanges of an organic fluorinated fluid inside a balloon attached to a magnetic marble to produce an electromotive force of 50 mV peak to peak by the use of a linear alternator. This heat engine is well suited to be operated using renewable energy sources such as geothermal gradients or focused sunlight. | |
| dc.language.iso | en | |
| dc.publisher | MDPI | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.subject.en | thermogravitational cycle | |
| dc.subject.en | thermogravitational electric generator | |
| dc.subject.en | pure power cycle | |
| dc.subject.en | Carnot cycle | |
| dc.subject.en | Rankine cycle | |
| dc.subject.en | Brayton cycles | |
| dc.subject.en | gravitational force | |
| dc.subject.en | compression and expansion | |
| dc.subject.en | waste heat harvesting | |
| dc.subject.en | geothermal energy harvesting | |
| dc.subject.en | solar energy harvesting | |
| dc.title.en | Thermogravitational Cycles: Theoretical Framework and Example of an Electric Thermogravitational Generator Based on Balloon Inflation/Deflation | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3390/inventions3040079 | |
| dc.subject.hal | Physique [physics]/Mécanique [physics]/Thermique [physics.class-ph] | |
| dc.subject.hal | Physique [physics]/Physique [physics]/Physique Générale [physics.gen-ph] | |
| dc.subject.hal | Physique [physics]/Physique [physics]/Enseignement de la physique [physics.ed-ph] | |
| dc.identifier.arxiv | 1511.00640 | |
| bordeaux.journal | Inventions | |
| bordeaux.page | 79 | |
| bordeaux.volume | 3 | |
| bordeaux.hal.laboratories | Laboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629 | * |
| bordeaux.issue | 4 | |
| bordeaux.institution | Bordeaux INP | |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01941436 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01941436v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inventions&rft.date=2018&rft.volume=3&rft.issue=4&rft.spage=79&rft.epage=79&rft.eissn=2411-5134&rft.issn=2411-5134&rft.au=AOUANE,%20Kamel&SANDRE,%20Olivier&FORD,%20Ian&ELSON,%20Tim&NIGHTINGALE,%20Chris&rft.genre=article |
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