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Heat Transfer Research

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ISSN Druckformat: 1064-2285

ISSN Online: 2162-6561

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00072 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.43 SJR: 0.318 SNIP: 0.568 CiteScore™:: 3.5 H-Index: 28

Indexed in

Temperature Oscillation of mLHP with Flat Evaporator

Volumen 40, Ausgabe 4, 2009, pp. 321-332
DOI: 10.1615/HeatTransRes.v40.i4.40
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ABSTRAKT

Loop heat pipes (LHPs) are heat transfer devices whose operating principle is based on evaporation and condensation of a working fluid, and which use the capillary pumping forces to ensure fluid circulation. Temperature oscillations are a rather wide-spread phenomenon accompanying the operation of miniature loop heat pipes (mLHP), which depends on the charging ratio of the working fluid, the device orientation in the gravity field, and the conditions of the condenser cooling, and so on. Intense oscillation, whose amplitude may exceed tens of centigrade degrees and the period may be equal to tens of minutes, arises from the lack of a working fluid in a mLHP when a hot condensate or vapor bubbles periodically penetrate into the compensation chamber and act on the vapor phase in it, thus increasing its temperature and volume. Changes in the external conditions, for instance, the LHP arrangement in an unfavorable orientation or applied heat load with respect to the conditions for which the filling volume is optimal, also contribute to initiation of intense temperature oscillation. All in all, the heat leak from the evaporator to the compensation chamber, the heat loss to the ambient, and the temperature and rate of subcooled liquid dictate the vapor bubble condition inside the compensation chamber, and the rate of the vapor bubble growth or dissipation inside the compensation chamber dictates the nature of temperature oscillation. The effects of different liquid charging ratios and the tilt angles to the temperature oscillation are studied in detail.

REFERENZIERT VON
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