EXPERIMENTAL STUDY OF A CRYOGENIC LOOP HEAT PIPE USING NITROGEN AS WORKING FLUID Part 2: THE TEMPERATURE DECREASE RATE OF THE PRIMARY EVAPORATOR

Cryogenic loop heat pipe（CLHP） is a kind of two-phase heat transfer device that can operate at very low temperature range.Therefore it is necessary to study the temperature decrease rate of the primary evaporator from room temperature to operating temperature.The discussion of the test results is de scribed.