Analysis of Heat Pipe Filled with Several Oxide Nanofluids on the Start-Up Process

Abstract

Three heat pipes with nanofluids of Al2O3-water, CuO-water and SiO2-water were tested experimentally. The temperature distribution of their start-up process was analysed, and compared the heat pipe with water. The results showed that the start-up way of heat pipe filled with nanofluids was coincident, the heat pipe filled with nanofluids showed a lower start-up temperature and a shorter start-up time in evaporator section compared with heat pipe filled with water, the temperature drop between evaporator section and condenser section for the heat pipe filled with nanofluids were reduced by 2-5°C than that of the heat pipe filled with water. The effect of the length of the heating section of heat pipe filled with nanofluids on the start-up process was little.

Heat Transfer Performance of Heat Pipe Radiator with SiO2/Water Nanofluids

“…So far, many researchers have focused on nanofluids such as Al 2 O 3 /water, SiO 2 /water, CuO/water, Cu/water, etc . We have also dealt with heat pipes with Al 2 O 3 /water and SiO 2 /water nanofluids and observed the remarkable thermal effects . In this paper, further application research on the heat pipe with SiO 2 /water nanofluids will be developed.…”