Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
EXPERIMENTAL EVALUATION OF A PLATE-TYPE HEAT EXCHANGER USING THE THERMOSYPHON'S PRINCIPLE
Submission Author:
Allefe Chagas Vaz , PR
Co-Authors:
Victor Vaurek Dimbarre, Felipe Mercês Biglia, Allefe Chagas Vaz, PAULO HENRIQUE DIAS DOS SANTOS, Thiago Antonini Alves
Presenter: Victor Vaurek Dimbarre
doi://10.26678/ABCM.COBEM2023.COB2023-2023
Abstract
Thermal and energy efficiencies are essential in various industrial and engineering applications. Thermosyphon-based systems use a two-phase working fluid circulation to transfer heat from the evaporator to the condenser, creating a continuous thermodynamic cycle. The thermal efficiency of heat exchangers using natural convection and thermosyphon principles depends on factors like working fluid properties, system geometry, and temperature differences between hot and cold regions. Generally, thermosyphon-based equipment is more thermally efficient than natural convection systems. Plate-type heat exchangers are compact and capable of significant thermal exchanges within a small volume using a working fluid. Commercial plate-type exchangers, known as radiators, use electrical resistances to provide energy, inducing internal movements due to density differences. In this study, two radiator-type heat exchangers were employed: one as a reference using oil as the working fluid and the other with modifications to allow testing with distilled water. The prototype used 40% of its total volume as distilled water to evaluate temperature compared to the commercial unit. Data were collected to determine the time required for both plate-type heat exchangers to reach steady-state conditions, and the values converged. This approach effectively enhances performance and reduces energy consumption in such devices. The surface temperature between the hot and cold regions in the adapted heat exchanger was closer due to the characteristic of internal two-phase flow.
Keywords
heat pipe, Two-Phase cycle, Radiators, experimental
