Abstract
The new experimental setup with copper-glass pulsating heat pipe has been constructed for investigation of the heat transfer problem. Pulsations of liquid slugs inside the heat pipe has been observed. It is demonstrated that with increasing of temperature difference between evaporator and condenser heat flux which can be removed is also increases.
Highlights
Heat pipes are a promising cooling system due to the fact of non-availability of moving parts, for example, pumps
The concept of Pulsating heat pipes (PHPs) was introduced by Akachi [2,3]
PHPs have already found many applications in micro and power electronics applications owing to the unique operational characteristics coupled with relatively low costs
Summary
Heat pipes are a promising cooling system due to the fact of non-availability of moving parts, for example, pumps. There are three main types of these devices: conventional heat pipes, loop heat pipes and pulsating heat pipes [1]. Pulsating heat pipes (PHPs) - a few connected tubes (or minichannels in the material), partially filled with liquid. There are three main types of PHPs: closed, open and closed with a valve. In PHP, there is a region where heat is supplied, an adiabatic zone and a zone that is cooled [4]. Transport of heat is observed due to pulsations of liquid and vapor bubbles in the heat pipe. The thermodynamic principle of PHP is based on the absorption / rejection of heat by the liquid and by the growth / decrease of vapor bubbles, which is the driving force. In [5] the thermodynamics of the process was studied in more details on the pressure-enthalpy diagram
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