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Sökning: WFRF:(Füldner G.)

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  • Gluesenkamp, K. R., et al. (författare)
  • Experimentally measured thermal masses of adsorption heat exchangers
  • 2020
  • Ingår i: Energies. - : MDPI AG. - 1996-1073. ; 13:5
  • Tidskriftsartikel (refereegranskat)abstract
    • The thermal masses of components influence the performance of many adsorption heat pump systems. However, typically when experimental adsorption systems are reported, data on thermal mass are missing or incomplete. This work provides original measurements of the thermal masses for experimental sorption heat exchanger hardware. Much of this hardware was previously reported in the literature, but without detailed thermal mass data. The data reported in this work are the first values reported in the literature to thoroughly account for all thermal masses, including heat transfer fluid. The impact of thermal mass on system performance is also discussed, with detailed calculation left for future work. The degree to which heat transfer fluid contributes to overall effective thermal mass is also discussed, with detailed calculation left for future work. This work provides a framework for future reporting of experimental thermal masses. The utilization of this framework will enrich the data available for model validation and provide a more thorough accounting of adsorption heat pumps. © 2020 by the authors.
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  • Hallström, Olof, et al. (författare)
  • Development of collector integrated sorption modules for solar heating and cooling : Performance simulation
  • 2014
  • Ingår i: Energy Procedia. - : Elsevier BV. - 1876-6102. ; 48, s. 67-76
  • Tidskriftsartikel (refereegranskat)abstract
    • Solar thermal cooling has difficulty to emerge as an economically competitive solution for small systems mainly due to high investment cost and system complexity [1]. Therefore developments of principally new system solutions are needed. This paper describes such a solution with sorption modules directly integrated into a solar thermal collector. The focus of the work has been to find key parameters influencing the module and the system efficiency. A validated model of a sorption collector has been implemented into a simplified system deck providing cooling, heating and domestic hot water to static loads in the system modelling environment TRNSYS [2]. Simulations have been conducted for different boundary conditions and at two locations with different climatic conditions. Thermal losses from the collector as well as internal thermal losses inside the collector were found to be the most important parameters influencing efficiency. The system simulations gave overall thermal cooling efficiencies in the range of 0.12-0.27 and electrical cooling efficiencies in the range of 15-45 depending on collector technology, climate and control strategy.
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  • Resultat 1-4 av 4

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