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Loop Heat Pipes Heat Transfer Characteristics Analysis by Using Nomograms
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Abstract
Method of the Loop Heat Pipe's (LHP's) heat transfer characteristics' determination by using nomograms is described in present paper. Graphs, presenting the characteristics of the different parts of the LHP, that have been drawn in combined coordinate system, permit to determine the “working points” which meet the main requirements on the LHP operation.
The most positive effect from the proposed method application can be obtained during the express thermal analysis, for example:
- a)at the Statement of Work (Technical Requirements Specification) forming separately for different parts of the Two-Phase Loop: evaporator, condenser, transport channels, reservoir;
- b)at the analysis of the influence of the temperature field non-uniformity in the condenser on the value of the vapor temperature inside the LHP evaporator (as a factor depending on the vapor-liquid interface position);
- c)at the analysis (application) of calculated characteristics obtained by using the different applied programs separately for different parts of the LHP;
- d)at the comparison (joint consideration) of the experimental characteristics of the condenser and the calculated characteristics of the evaporator and vice versa, the comparison of the experimental characteristics of the evaporator and the calculated characteristics of condenser, etc.
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Borodkin, A., Sasin, V., Kotliarov, E., and Goncharov, K., "Loop Heat Pipes Heat Transfer Characteristics Analysis by Using Nomograms," SAE Technical Paper 961566, 1996, https://doi.org/10.4271/961566.Also In
References
- Isachenko V.P. Thermal Power Engineering 1960 5 9 14
- Dolgirev Yu.E. Gerasimov Yu.F. Maidanik Yu.F. Kiseev V.M. Calculation of Heat Pipe with separate lines for vapor and liquid Liquid Physics Institute 1978 XXXIV 6
- Sasin V.Ya. Zelenov I.A. Zuev V.G. Kotliarov E.Yu. Mathematical Model of a Capillary Loop Heat Pipe with a Condenser-Radiator 20th ICES Williamsburg, Virginia, USA July 9-12 1990
- Goncharov K.A. Kotliarov E.Yu. Smirnov F.Yu. Schlitt R. Beckmann K. Meyer R. Mueller R. Investigation of Temperature Fluctuations in Loop Heat Pipes 24th ICES Friedrichshafen, Germany June 20-23 1994