A Review on Thermal Performance of Closed Loop Pulsating Heat Pipe with different Working Fluid
Keywords:
closed loop, heat pipe, thermal performance, working fluid, fill ratio.Abstract
The closed-loop pulsating heat pipe is a type of small heat exchanger with a very high thermal conductivity.
The purpose of invention is to meet the requirement for smaller heat transfer devices. It helps to transfer sufficient
amount heat for heat dissipation applications in modern electronic devices. The closed loop pulsating heat pipe is made
of a long capillary tube, bent into an undulating tube and connected at the ends to form a closed-loop with no internal
wick structure. In this paper a review is established on the work done by various researchers on closed loop pulsating
heat pipes for improving its thermal performance by using various working fluids and the effect of various operating
parameter affecting the functioning of closed loop pulsating heat pipe. Thermal performance of the heat pipe depends on
thermo physical properties (latent heat, specific heat capacity, viscosity, surface tension, density, etc) of the working fluid
inside the heat pipe.
