Abstract
Defrosting plates are among the heat pipe application products currently available on the market. Traditional defrosting plates are made by flattening and bending the heat pipes, which are then tightly sealed between two aluminum plates. A solder paste is then used for adhesion and sealing to increase heat conduction. Although various designs of classical heat pipes are available, recently industry trends have frequently shown the limitations of these conventional designs. In the past decade several emerging cooling technologies are demonstrated and pulsating or loop-type heat pipes (PHP) represents one such field of investigation. This range of device is projected to meet all present and possibly future specific requirements of the electronics cooling industry, owing to favorable operational characteristics coupled with relatively cheaper costs. This study adopted a design using pulsating heat pipes to substitute for the design using traditional heat pipes and further applied abovementioned parameters to implement the development of defrosting plates including their performances evaluation. And more, to investigate the feasibility of using the Angstrom method theoretical model for measuring the spreading thermal conductivity in PHPs. The Angstrom method was classified into a 1-D model and a 2-D model and theoretical analyses of both modes were conducted respectively. According to practical industrial requirements, both thermal diffusivity measurement platform and specific heat capacity measurement system were designed. A spreading thermal conductivity measuring platform that utilized cooling modules with programmed modulators to provide temperature modulation was designed, and Visual Basic and PLC-programmable modulators were used in the development of a spreading thermal conductivity measuring program for the feasibility studies involving PHPs. In order to prove the precision of the Angstrom model by the design of the thickness-to-width ratio experiments applied in the abovementioned measurement platform and system.