A trial on performance test method for Cu-water heat pipe

Because of the increase demand for heat pipes, the establishment of standard methods for the performance test and the performance expression of the heat pipe was requested. Generally, the measurement method for the heat transfer rate of heat pipes is divided into two categories. That is, the heat transfer rate of heat pipe is measured by heat input to the evaporator surface or the quantity of heat removed from the condenser zone. The heat loss to each method described must be determined by circulating some kind of fluid such as water in same size pipe located in the heating unit instead of the heat pipe under actual operating condition before use. The heat transfer rate of Cu-Water heat pipe is measured by means of the measurement method based on the principle of bomb calorimeter. The obtained measuring accuracy may be lower.