Experimental Investigation of Enhancement of Natural Convective Heat Transfer in Air Using Ultrasound
[ 1 ] Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] pracownik
2023
artykuł naukowy
angielski
- natural convection enhancement
- airborne ultrasound
- cooling
- small Biot’s number conditions
EN One of the methods to improve convective heat exchange is the application of ultrasound assistance. However, little is known about ultrasound application in the air. The main purpose of this study is to investigate the effect of ultrasound on natural convection cooling. The tests are based on the cooling of the metal samples (in four different shapes) preheated to a temperature of 60 ◦C. Cooling takes place in free convection without and with the use of ultrasound at different powers (50 W, 100 W, 150 W, and 200 W). The study uses a mathematical model based on a small Biot’s numberassumption. Thevaluesoftheconvectiveheatexchangecoefficientsaredeterminedbyusing an approximation of the experimental results. The coefficients obtained are an increasing exponential function of the applied ultrasound power. This study indicates the possibility of using ultrasound to improve heat transfer by free convection.
15.02.2023
2516-1 - 2516-13
Article number: 2516
CC BY (uznanie autorstwa)
otwarte czasopismo
ostateczna wersja opublikowana
15.02.2023
w momencie opublikowania
publiczny
100
2,7 [Lista 2022]