Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Thermo-hydraulic experimental analysis of multi-microchannel heat exchangers
Submission Author:
Erick Daniel Rincón Castrillo , MG , Brazil
Co-Authors:
Erick Daniel Rincón Castrillo, Frank Wiliam Adolfo Blanco Ojeda, Gleyzer Martins, Oscar Saul Hernandez mendonza, ENIO PEDONE BANDARRA FILHO
Presenter: Gleyzer Martins
doi://10.26678/ABCM.COBEM2023.COB2023-1536
Abstract
Microchannels are a heat dissipation technology that emerged for applications where there is a high concentration of energy, such as applications in microelectronic circuits and third-generation photovoltaic generation with solar concentration. Thus, the analysis of the thermo-hydraulic performance of multi-microchannel heat exchangers with rectangular geometry was developed. For the analysis, water was used as the working fluid with different values of mass flow, heating powers and inlet temperatures in the heat exchanger. The microchannel heat exchanger was experimentally tested with the imposed heat flux varying between 7,29 – 51,09 kW/m^2, mass flow rate between 29 – 116 kg/s.m^2, microchannel inlet temperature of 25 and 45°C. The heat transfer values for the base fluid in a fully developed laminar regime were compared with classical models for microchannel heat exchangers, with the Shah and London correlation showing the best agreement when compared with the experimental data. In hydraulic terms, the values of the friction factor are in accordance with the classical theory of fluid mechanics.
Keywords
Microchannel Heat Exchangers, water, Thermo-Hydraulic Performance
