Overall thermal performance of ferrofluidic open loop pulsating heat pipes: An experimental approach

► An open loop pulsating heat pipe (OLPHP) charged with ferrofluid is investigated. ► Effects of important parameters on thermal performance of OLPHPs are considered. ► Thermal resistance of the ferrofluid charged OLPHPs can magnetically be adjusted. ► The optimum inclination angle for the present OLPHP is around 67.5°.