An experimental investigation on the heat transfer characteristics of minichannel thermosyphon with multiports for cooling the modern miniaturized electronic devices

•Multiports act as internal fins and enhances evaporation rate of working fluid.•Reservoirs at the ends supply required quantity of fluid & reduce fluid entrainment.•Reduction in heat transfer and pressure drop irreversibilities of 17 & 48% observed.•Multiport design showed good stability by withstanding 2.7 bar pressure at 90 W.