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  • 1.
    Behi, Hamidreza
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Ghanbarpour, Morteza
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Behi, Mohammadreza
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Investigation of PCM-assisted heat pipe for electronic cooling2017Inngår i: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 127, s. 1132-1142Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Today, higher-power computer chips are available, but they generate too much heat that irreparably damages inside components. In this paper, a horizontal phase change material (PCM)-assisted heat pipe system for electronic cooling was introduced as a potential solution to this problem. A computational fluid dynamic model was developed and validated to assist the investigation. A surface temperature profile along the heat pipe was used to validate the CFD model. The liquid fraction and temperature distribution of PCM were reported during the charging process at different input powers. It was found that the PCM-assisted heat pipe provided up to 86.7% of the required cooling load in the working power range of 50-80 W. Contribution of PCM was calculated to be 11.7% of the provided cooling load and preventing heat dissipation.

  • 2.
    Behi, Mohammadreza
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik. Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW 2006, Australia..
    Mirmohammadi, Seyed Aliakbar
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik. Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia..
    Ghanbarpour, Morteza
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Behi, Hamidreza
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Palm, Björn
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Evaluation of a novel solar driven sorption cooling/heating system integrated with PCM storage compartment2018Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 164, s. 449-464Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Recently the interest in solar thermal cooling has been growing for Air Conditioning (AC) applications. This paper presents an applied experimental and numerical evaluation of a novel triple-state sorption solar cooling module. The performance of a LiCl-H2O based sorption module (SM) for cooling/heating system with integration of an external energy storage has been evaluated. The dynamic behavior of the SM, which can be driven by solar energy, is presented. Two PCM assisted configurations of the SM have been studied herein; (i) PCM assisted sorption module for cooling applications (ii) PCM assisted sorption module for heating applications. Initially, an experimental investigation was carried out to evaluate the charging/discharging process of the SM without external energy storage. Secondly, the initial experimental configuration was modeled with a PCM integrated storage compartment. The PCM storage compartment was connected to the Condenser/Evaporator (C/E) of the SM. The temporal history of the sorption module's C/E and PCM storage, the cyclic and average performance in terms of cooling/heating capacity, cooling/heating COP, and the total efficiency were experimentally and numerically investigated. Furthermore, PCM charging/discharging power rate and solidification/melting process of the PCM in the integrated storage compartment to the SM were predicted by the model.

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