Open Access
HTPIPE: A steady-state heat pipe analysis program: A user's manual
K.A. Woloshun,Merrigan,E.D. Best +2 more
TLDR
A steady-state heat pipe analysis program, HTPIPE as mentioned in this paper, was developed at Los Alamos National Laboratory to evaluate the performance limits of a heat pipe at a specified evaporator exit temperature.Abstract:
A steady-state heat pipe analysis program, HTPIPE, operational on CRAY computers, is documented. HTPIPE has two input/output (I/O) options: pressure and temperature profiles along the heat pipe, and calculation of performance limits. Pressure and temperature profiles are calculated based on user-specified boundary conditions, which may be any two of the following: power throughput, evaporator exit temperature, source temperature, and sink temperature. The performance limits represent the maximum heat transport limits at a specified evaporator exit temperature. The calculated performance limits are the capillary, viscous, sonic, entrainment, and boiling limits. User input is interactive, with the available option of parametric variation during a single program execution to facilitate heat pipe design optimization. The hydrodynamic model is described. Program I/O is detailed and supplemented with examples. A program listing and a flow chart are included in this manual. HTPIPE is consistent with the theories and correlations used for heat pipe design at Los Alamos National Laboratory to date. 13 refs., 2 figs., 3 tabs.read more
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Journal ArticleDOI
Uses of liquid-metal and water heat pipes in space reactor power systems
TL;DR: In this article, the authors present operation and design constraints pertinent to the uses of water and liquid-metal heat pipes in space reactor systems, and the modeling capabilities of the startup from a frozen state.
Journal ArticleDOI
Double-sided IPEM cooling using miniature heat pipes
TL;DR: In this paper, the feasibility of using miniature heat pipes to achieve effective double-sided cooling is investigated by analyzing the complete thermal circuit associated with the power device in a nominal case using the ANSYS(tm) finite element software in a single-sided and doublesided configuration.
Proceedings ArticleDOI
Reactor Lithium Heat Pipes for HP-STMCs Space Reactor Power System
TL;DR: In this paper, a design and performance analysis of the nuclear reactor's lithium heat pipes for a 110kWe Heat Pipes-Segmented Thermoelectric Module Converters (HP•STMCs) Space Reactor Power system (SRPS) is presented.
ReportDOI
Numerical and Experimental Investigations of a Rotating Heat Pipe
TL;DR: In this article, the authors submitted a Partial Fulfillment of the Requirements for the degree of Doctor of Philosophy Engineering at the University of New Mexico (UNM) in New Mexico.
Proceedings ArticleDOI
Thermionic in-core heat pipe design and performance
W. R. Determan,G. Hagelston +1 more
TL;DR: In this paper, a detailed study was performed to determine the potential in-core heat pipe geometries which could be developed for an HPTI concept, and a bow tie in core heat pipe geometry was selected as the optimum design using a HPTI honeycomb core structure.
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