Calculation of heat transfer coefficients

Autor:	F. Vode, F. Tehovnik, B. Arh, S. Malej, B. Podgornik
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Al-body convective heat transfer forced-convection furnace mathematical model measured temperatures Mining engineering. Metallurgy TN1-997
Zdroj:	Metalurgija, Vol 58, Iss 1-2, Pp 36-38 (2019)
Druh dokumentu:	article
ISSN:	0543-5846 1334-2576
Popis:	In forced-convection furnaces for reheating Al-alloys, convective heat transfer mechanism dominates. Al-body temperature prediction model uses measured furnace temperature as boundary condition. To calibrate such model, a convective heat transfer coefficient h is to be determined. Optimization technique is used here to determine h for every measured temperature sample so that measured temperatures match calculated, supposing radiative heat transfer coefficient constant and neglecting conductive heat transfer. Obtained h stably converges during normal reheating conditions. The obtained model is 4-fold cross-validated and obtained Root Mean Square Error of whole reheating profiles are [7,7; 20,4; 10,4; 12,5] °C.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/f2c97a93d007430296e9a18736d5db70 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF