Szczegóły publikacji
Opis bibliograficzny
Investigation of heat transfer coefficient during quenching in various cooling agents / A. BUCZEK, T. TELEJKO // International Journal of Heat and Fluid Flow ; ISSN 0142-727X. — 2013 — vol. 44, s. 358–364. — Bibliogr. s. 364, Abstr.
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 78131 |
|---|---|
| Data dodania do BaDAP | 2013-11-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ijheatfluidflow.2013.07.004 |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Heat and Fluid Flow |
Abstract
Heat transfer coefficients, HTCs, at the surface of a metal sample during immersion quenching were measured and evaluated using numerical procedures. The boundary inverse heat conduction problem has been defined and solved. A FEM self-developed computer code has been used to obtain a solution to the direct problem. The sensitivity of the method enabled us to examine the effect of various quenching parameters on the heat transfer for two mineral oils and a polymer quenchant. At 800 degrees C the HTC values were equal to similar to 0.5 kW/(m(2) K) and similar to 3.2 kW/(m(2) K), for mineral oils and a polymer coolant, respectively. They increased to similar to 4.7 kW/(m(2) K) - oil A, similar to 6.0 kW/(m(2) K) - oil B and similar to 7.4 kW/(m(2) K) - polymer, respectively. The peak of HTC was sharp and occurred at a narrow temperature interval between 520 and 550 degrees C for the oils, whereas for the polymer, the peak was lower by approx. 100 K and flat over 100-120 K interval. Subsequently HTC decreased, and at similar to 150 degrees C the values were similar to 0.5 kW/(m(2) K) and similar to 2.0 kW/(m(2) K), for mineral oils and a water polymer coolant, respectively. (C) 2013 Elsevier Inc. All rights reserved.