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Analysis of the dis...
Analysis of the discharging process of latent heat thermal energy storage units by means of normalized power parameters
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- Konig-Haagen, Andreas (författare)
- Univ Bayreuth, Chair Engn Thermodynam & Transport Proc LTTT, Ctr Energy Technol ZET, Bayreuth, Germany.;Univ Basque Country UPV EHU, Fac Engn Bilbao, Dept Energy Engn, ENEDI Res Grp, Bilbao, Spain.
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- Hoehlein, Stephan (författare)
- Univ Bayreuth, Chair Engn Thermodynam & Transport Proc LTTT, Ctr Energy Technol ZET, Bayreuth, Germany.
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- Lazaro, Ana (författare)
- Univ Zaragoza, Aragon Inst Engn Res I3A, Thermal Engn & Energy Syst Grp, Zaragoza, Spain.
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- Delgado, Monica (författare)
- Univ Zaragoza, Aragon Inst Engn Res I3A, Thermal Engn & Energy Syst Grp, Zaragoza, Spain.
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- Diarce, Gonzalo (författare)
- Univ Basque Country UPV EHU, Fac Engn Bilbao, Dept Energy Engn, ENEDI Res Grp, Bilbao, Spain.
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- Groulx, Dominic (författare)
- Dalhousie Univ, Lab Appl Multiphase Thermal Engn LAMTE, 5269 Morris St, Halifax, NS B3H 4R2, Canada.
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- Herbinger, Florent (författare)
- Dalhousie Univ, Lab Appl Multiphase Thermal Engn LAMTE, 5269 Morris St, Halifax, NS B3H 4R2, Canada.
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- Patil, Ajinkya (författare)
- Dalhousie Univ, Lab Appl Multiphase Thermal Engn LAMTE, 5269 Morris St, Halifax, NS B3H 4R2, Canada.
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- Englmair, Gerald (författare)
- Tech Univ Denmark DTU, Dept Civil Engn, Bldg 118, DK-2800 Brovej, Denmark.
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- Wang, Gang (författare)
- Tech Univ Denmark DTU, Dept Civil Engn, Bldg 118, DK-2800 Brovej, Denmark.
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- Abdi, Amir (författare)
- KTH,Tillämpad termodynamik och kylteknik
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- Chiu, Justin NingWei, 1984- (författare)
- KTH,Kraft- och värmeteknologi
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- Xu, Tianhao (författare)
- KTH,Tillämpad termodynamik och kylteknik
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- Rathgeber, Christoph (författare)
- Bavarian Ctr Appl Energy Res ZAE Bayern, Walther Meissner Str 6, D-85748 Garching, Germany.
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- Poellinger, Simon (författare)
- Bavarian Ctr Appl Energy Res ZAE Bayern, Walther Meissner Str 6, D-85748 Garching, Germany.
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- Gschwander, Stefan (författare)
- Fraunhofer Inst Solar Energy Syst ISE, Heidenhofstr 2, D-79110 Freiburg, Germany.
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- Gamisch, Sebastian (författare)
- Fraunhofer Inst Solar Energy Syst ISE, Heidenhofstr 2, D-79110 Freiburg, Germany.
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Univ Bayreuth, Chair Engn Thermodynam & Transport Proc LTTT, Ctr Energy Technol ZET, Bayreuth, Germany;Univ Basque Country UPV EHU, Fac Engn Bilbao, Dept Energy Engn, ENEDI Res Grp, Bilbao, Spain. Univ Bayreuth, Chair Engn Thermodynam & Transport Proc LTTT, Ctr Energy Technol ZET, Bayreuth, Germany. (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Journal of Energy Storage. - : Elsevier BV. - 2352-152X .- 2352-1538. ; 72
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Many efforts are being made to mitigate the main disadvantage of most phase change materials - their low thermal conductivities - in order to deliver latent heat energy storage systems (LHESS) with adequate perfor-mance. However, the effect of applied methods is difficult to compare as they are mostly tested for different storage types and sizes and/or different boundary and initial conditions, which hinders rapid progress in the optimization of these approaches. In this work, a previously developed method for comparing the performance of LHESS is applied to experimental results of different storage systems under different conditions and subsequently analyzed and further refined. The main idea of the method is to normalize the power with the volume and a reference temperature difference and compare its mean value plotted over the normalized mean capacity flow of the heat transfer fluid (HTF). This enables the presentation of the results in a compact and easily comparative way. Attention has to be paid when it comes to the choice of the reference temperature difference, the reference volume and the method for calculating the mean value. Two variants of calculating the mean value (time-weighted and energy-weighted) and two variants of reference temperatures for determining the temperature difference to the inlet temperature of the HTF (initial temperature and melting temperature) are applied and discussed in detail. While the method significantly increases the comparability of results, none of the options listed above are without drawbacks. Approaches are shown to reduce or eliminate these drawbacks in the future. The recommendation for comparing different LHESS under different conditions is to use the method described here and clearly state the chosen reference temperature, reference volume and method for calculating the mean value.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Power
- Evaluation
- Performance indicators
- Phase change materials
- Latent heat
- Thermal energy storage
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Konig-Haagen, An ...
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Hoehlein, Stepha ...
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Lazaro, Ana
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Delgado, Monica
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Diarce, Gonzalo
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Groulx, Dominic
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visa fler...
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Herbinger, Flore ...
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Patil, Ajinkya
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Englmair, Gerald
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Wang, Gang
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Abdi, Amir
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Chiu, Justin Nin ...
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Xu, Tianhao
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Rathgeber, Chris ...
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Poellinger, Simo ...
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Gschwander, Stef ...
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Gamisch, Sebasti ...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Maskinteknik
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och Energiteknik
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Journal of Energ ...
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