Experimental study of a Capillary Pumped Loop assisted with a mechanical pump placed at the evaporator inlet

Autor: Sébastien Dutour, Pascal Lavieille, Jacques Lluc, Raphael Mari, Marc Miscevic, Laura Fourgeaud, Marie Levêque, Yves Bertin
Přispěvatelé: LAboratoire PLasma et Conversion d'Energie (LAPLACE), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, IRT Saint Exupéry - Institut de Recherche Technologique, Groupe de Recherche Energétique, Plasmas et Hors Equilibre (LAPLACE-GREPHE), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Convection, Optimisation, Systèmes Thermiques (COST ), Département Fluides, Thermique et Combustion (FTC), Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS), Airbus Defence and Space [Toulouse], Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA-Institut Pprime (PPRIME), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA-Université de Poitiers-Centre National de la Recherche Scientifique (CNRS)-ENSMA
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Thermal efficiency
Materials science
Capillary action
020209 energy
[PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph]
Energy Engineering and Power Technology
02 engineering and technology
Capillary Pumped Loop
Mechanical pumping
Industrial and Manufacturing Engineering
[SPI.AUTO]Engineering Sciences [physics]/Automatic
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
020401 chemical engineering
0202 electrical engineering
electronic engineering
information engineering
Electronics cooling
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
0204 chemical engineering
Evaporator
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]
Pressure drop
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph]
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment
[SPI.NRJ]Engineering Sciences [physics]/Electric power
[CHIM.MATE]Chemical Sciences/Material chemistry
Mechanics
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
Centrifugal pump
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
Subcooling
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
[CHIM.POLY]Chemical Sciences/Polymers
Heat transfer
[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph]
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Hybrid loop
Zdroj: Applied Thermal Engineering
Applied Thermal Engineering, Elsevier, 2020, 169, pp.114850. ⟨10.1016/j.applthermaleng.2019.114850⟩
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2019.114850⟩
Popis: International audience; The heat transfer performances of capillary-driven evaporators are still improving while their pumping capacity remains drastically limited by the porous wick structure. The pump assistance allows this capillary limit to be overcome and more largely, gives the opportunity of an important enhancement of capillary two-phase loops operating range. An experimental device made of a Capillary Pumped Loop coupled with a controlled centrifugal pump located at the inlet of the evaporator was proposed. We have shown that the hybrid system acts as it would in a simple capillary-driven regime with an operating loop pressure drop far beyond the capillary limit (more than 60 kPa i.e. more than 6 times the evaporator capillary limit with methanol) while preserving the evaporator thermal efficiency due to vaporisation. Moreover, we have found that the pump assistance significantly increases the system robustness during large amplitude heat load step and startup by influencing the liquid subcooling and flow rate at the evaporator inlet.
Databáze: OpenAIRE
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