The aim of this study was to investigate the effect inserting a new internal tube packing (TP) on thermal performance thermosyphon heat pipe (THP). THP made from copper with an inner diameter 17.4 mm and length 600 mm. had central disc two tubes soldered onto both sides transport vapor condensate. upper or riser 8.3 300 long; it connected hole in side steam condenser section. lower downcomer 5 ...

the main purpose of this paper is to introduce and study new classes of soft closed sets like soft regular generalized b-closed sets in soft topological spaces (brie y soft rgb-closed set) moreover, soft rg-closed, soft gpr-closed, soft gb-closed, soft gsp-closed, soft g-closed, soft gb-closed, and soft sgb-closed sets in soft topological spaces are introduced in this paper and we investigat...