Closed-form analytical solutions of high-temperature heat pipe startup and frozen startup limitation Article

Cao, Y, Faghri, A. (1992). Closed-form analytical solutions of high-temperature heat pipe startup and frozen startup limitation . JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 114(4), 1028-1035. 10.1115/1.2911873

cited authors

  • Cao, Y; Faghri, A

authors

abstract

  • Previous numerical and experimental studies indicate that the high-temperature heat pipe startup process is characterized by a moving hot zone with relatively sharp fronts. Based on the above observation, a flat-front model for an approximate analytical solution is proposed. A closed-form solution related to the temperature distribution in the hot zone and the hot zone length as a function of time are obtained. The analytical results agree well with the corresponding experimental data, and provide a quick prediction method for the heat pipe startup performance. Finally, a heat pipe limitation related to the frozen startup process is identified, and an explicit criterion for the high-temperature heat pipe startup is derived. The frozen startup limit identified in this paper provides a fundamental guidance for hightemperature heat pipe design. © 1992 by ASME.

publication date

  • January 1, 1992

published in

Digital Object Identifier (DOI)

start page

  • 1028

end page

  • 1035

volume

  • 114

issue

  • 4