Natural convection in a vertical rectangular enclosure with localized heating and cooling zones

摘要

Experimental and numerical studies of natural convection in a single phase, closed thermosyphon were carried out using a vertical, rectangular enclosure model. Only one vertical plate plays the role or heat transfer Surface having 100 mm height and 100 mm with, and Others act as the adiabatic wall made of transparent plexi- Glass. The heat transfer surface is separated into three Horizontal zones with an equal height; top 1/3 and bottom 1/3 of the surface are cooling and heating zones, respec- tively and intermediate section is an adiabatic zone. Water is used as the working fluid.