Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
PERFORMANCE ANALYSIS FOR A CROSS-FLOW FAN IN A HOUSEHOLD EVAPORATIVE COOLER
Submission Author:
Robson Leal da Silva , MS , Brazil
Co-Authors:
Matheus Garros, Patrick Oliveira Guedes, Robson Leal da Silva
Presenter: Matheus Garros
doi://10.26678/ABCM.COBEM2023.COB2023-1718
Abstract
Small evaporative coolers have increasing use in household appliances for thermal comfort due to their low energy consumption comparing to vapor compression refrigeration systems. Nevertheless, very little data is available to the consumers from manufacturers regarding the fan performance itself. Thus, the objective is to investigate if the amount of kinetic energy provided for a low-pressure crossflow fan (CFF) represents a significant contribution in comparison to the thermal energy available from the psychometric process by the evaporative cooler; and, to identify if maximum fan performance occurs in the angular speeds operating range and if nominal airflow values provided by the manufacturer are consistent to experimental results. The methodology considers experimental measurements for ambient conditions (pressure, temperature, and humidity), fan angular speeds, and airflow velocities at the rotor's inlet and outlet by Euler's equation. The main findings are: 1) It's not possible to identify maximum performance in the operational angular speeds; 2) The CFF kinetic energy is negligible in comparison to thermal energy in small evaporative coolers (EC); 3) Experimental results for airflow values at the rotor's maximum angular speed is consistent to nominal values provides by the manufacturer.
Keywords
fluid mechanics, cross-flow fan, Ventilation, Evaporative Cooler, performance
