Experimental analysis of the effect of turbulators using heat pipe on heat transfer

Systems used today use heat transfer applications to use energy more efficiently. A heat exchanger is a device used to transfer heat from one liquid to another. The heat exchanger is generally used in cooling, heating, power plants and the chemical industry. Heat exchangers are considered in two parts, as direct contact and non-direct contact, according to the type of heat exchanger. It directly mixes or contacts fluids or any fluid and solid materials at different temperatures in a heat exchanger with direct liquid contact. A good example of such a heat exchanger is a cooling tower, which is often used to remove heat produced by industrial processes. In a heat exchanger without direct fluid contact, the hot fluid is first directed to a surface or mass that separates the two fluids. This heat is transferred from these surfaces or masses to the cold fluid. In this study, it is aimed to use a shaft in the pipe in order to increase the heat transfer in the copper pipe. Thanks to the turbulators, which are intended to be made of copper pipes and heat pipe layers, heat transfer is increased. According to the test results, the effect of the turbulators manufactured with copper and heat pipes was investigated. The inlet-outlet temperatures of the system measured at 16 different air flow rates are shown graphically. Measurements were made at these different air velocities and it was observed that the temperature difference of the heat pipe with turbulator flowing in parallel direction was high. The use of turbulator affected the temperature difference. In the case of parallel flowing straight pipe with turbulator, the temperature difference is the lowest, and when straight pipe with counterflow turbulator is used, the difference is observed to decrease after 3.1 m/s. Considering the values for the pipe without a turbulator, inefficient changes have occurred and an increase is observed in the temperature difference, where the air velocity is 1.7 m/s at the top value. In case of using counter flow heat pipe with turbulator compared to empty pipe without turbulator. It has been calculated that there is a temperature difference increase of 129% at a speed of 0.8 m/s, and 62% at the same air speed in the case of using a heat pipe with a parallel flow turbulator. In the case of air velocity of 4.0 m/s, the efficiency in the temperature difference increased by 170% in the counterflow turbulator heat pipe. According to the test results, the thermal efficiency, reynolds, pressure and heat transfer values of the turbulators made of copper were drawn.