Is the larger aluminium heat sink with better thermal performance Under active cooling if there have more aluminum fins the fluid carries heat more Is a heatpipe with a function of heat dissipation Is the heatpipe more longer,more higher thermal conductivity Is the flatted heatpipe with better thermal performance? When the heatpipe get bend will affect the thermal conductivity? The heatpipe has a sealed end and a non-sealed end. Which side should be placed on the evaporation end and the condensation end? What is the workinig theorem of a heatpipe? If we manufactured heat pipe by flatten process,will this process affect internal pressure drop of tube? Will the pressure drop affect the performance of heat pipe? Which side of the heat pipe groove tube and the sintered tube have better anti-gravity performance? What is the minimum angle of the heatpipe can be bended? Is a heatpipe with a good effect of phase change even without vacumming the air out after injecting working fluid ? If capillary structure of heat pipe is more thicker. Will it get more excellent thermal conduction function? Do the thicker pad which with more thermal particles have better thermal performance? 1 2