Browse Publications Technical Papers 2004-01-2552

Loop Heat Pipe Testing and Analytical Model Verification at the U.S. Naval Research Laboratory 2004-01-2552

Heat transfer characteristics of a Loop Heat Pipe (LHP) are difficult to predict due to the complex nature of thermal interaction between the LHP itself and the environment it operates in. The overall thermal conductance varies not only with the power input, sink temperature and ambient temperature as expected, but also with the system initial condition and/or previous history of its operation. Hence, the analytical modeling of LHPs often yielded inaccurate results when compared with the actual data. The U.S. Naval Research Laboratory (NRL) recently completed the development of a transient LHP model. Accordingly, NRL carried out an extensive LHP test program, in part, to provide test data for the model verification. In this paper, description of the test program and results of the model verification will be presented.


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