Thermographic Analysis and Experimental Work Using Laboratory Installation of Heat Transfer Processes in a Heat Pipe Heat Exchanger Utilizing as a Working Fluid R404A and R407C

Abstract

The article presents the results of experimental research on a heat exchanger type heat pipe for the range of 15 ÷ 50 °C lower source temperature. The emergence of processes occurring inside and related to their work is essential mainly in the era of achieve to demote heat losses and keep off unnecessary dissipation of energy. The need to conduct investigation and studies of heat pipes is also conditioned by the require to rescue primary energy in both construction engineering and manufacture. This work contain the effect of research on a real HEX, a heat pipe made of copper, 1769 mm long, 18 mm in diameter and 1 mm thick wall. This research consisted of placing a heat tube in a tube-type heat exchanger in a pipe in order to supply and collect heat to and from the heat pipe. Previous studies on a heat tube with vacuum and air inside showed that there is a negligible heat flux transmitted through the walls of the heat pipe along its axis. When filling the tube with R404A and R407C, there is a significant increase in the heat flux received and passed through the heat pipe. In addition, the work presents the results of the performed thermographic analysis for the studied working factors.