Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL EVALUATION OF THERMAL PERFORMANCE OF A HEAT EXCHANGER USING THERMOSYPHONS
Submission Author:
Thiago Antonini Alves , PR , Brazil
Co-Authors:
Victor Vaurek Dimbarre, Allefe Chagas Vaz, Thomas Siqueira Pereira, Pedro Leineker Ochoski Machado, PAULO HENRIQUE DIAS DOS SANTOS, Thiago Antonini Alves
Presenter: Victor Vaurek Dimbarre
doi://10.26678/ABCM.ENCIT2022.CIT22-0272
Abstract
Heat exchangers are devices that aim to improve heat exchange between two fluids at different temperatures, without them mixing. The characteristics that differentiate the types of exchangers are their geometric and constructive shapes, exemplified by the shell and tubes, serpentine, finned, plate, and double tube types, among others. For the present paper, a heat exchanger tube is used, which is connected by thermosyphons to carry out the thermal exchange between the fluids without mixing them. In order to increase the thermal efficiency of the heat exchanger, it is necessary more efficient thermal exchange devices. For this purpose, in this case, we use thermosyphons. The goal of this experimental study is to evaluate the thermal efficiency of the heat exchanger using thermosyphons. In this study, the thermosyphons were manufactured in copper with outer diameter of 9.45mm, an inner diameter of 7.75mm, and a total length of 180mm. The condenser, evaporator, and adiabatic sections all have the same size of 60mm. Three thermosyphons connected the two fluids of the heat exchanger, each one filled with distilled water with a filling ratio of 40% of the evaporator volume and experimentally tested with an angle of 67.5º relative to the horizontal and the cooling being carried out by convection forced water. Given the results observed for the thermal analysis, it was possible to find the thermal effectiveness of the heat exchanger.
Keywords
Heat Exchangers, heat pipe, experimental, Thermosyphon, Thermal performance
