Thermosyphons are heat transfer devices characterised by high efficiency due to simultaneous phase changes occurring in the evaporation-condensation cycle of working fluid. One most promising solutions enhance their capacity device is use nanofluids – suspensions particles with at least one dimension below 100 nm. It was determined that nanofluid does not influence work thermosyphons condenser ...

let $s$ be a monoid. in this paper, we prove every class of $s$-acts having a flatness property is closed underdirected colimits, it extends some known results. furthermore thisresult implies that every $s$-act has a flatness cover if and only if it has a flatness precover.

A thermosyphon loop, designed for the thermal management of a large Medium voltage power converter 5 MW overall, corresponding to 2.4 kW load per cooling unit) is presented. The device mainly made an evaporator, condenser and reservoir connected with plastic liquid vapor lines. Novec 649 (3M) has been chosen as working fluid due environmental electrical concerns. model loop described, its predi...