Analysis of temporal and spatial temperature gradients at pronouncedly fluctuating cooling conditions

Autor:	Saša Mudrinić, Mladen Andrassy, Antun Galović
Rok vydání:	2004
Předmět:	Quenching Chemistry Instrumentation General Physics and Astronomy Thermodynamics Mechanics Radius Control volume Granulation Temperature gradient Thermocouple Cylinder Physics::Atomic Physics fluidized bed cooling velocity experimental data finite volume method
Zdroj:	Journal de Physique IV. 120:529-535
ISSN:	1764-7177 1155-4339
DOI:	10.1051/jp4:2004120061
Popis:	Realised cooling velocities of a probe (cylinder) at discrete radius points during cooling at pronouncedly fluctuating cooling conditions are presented. Submerging the probe into an air-corundum (Al2O3) particles fluidised system of insufficient cooling capacity imposes the fluctuating cooling conditions. The particles have an average granulation of 95 m; the cylindrical probe diameter is 50 mm and its height 175 mm. The probe surface temperature and the temperature 1.5 mm beneath its surface are measured with built-in thermocouples. The thermocouples have a very high sensitivity, which enables temperature variation recording according to the cooling dynamics. The relevant cooling time is 125 seconds. The temperature changes in discrete points of the cylinder radius are determined by the control volume method. The calculation results indicate a shift of the maximum cooling velocity towards the interior of the cylinder.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cea06591344f5e5d68f69bfb6b3f134f https://doi.org/10.1051/jp4:2004120061 Zobrazit plný text záznamu