Naslov
Transient Analysis of Temperature Distribution in Furnace Walls

Autori
Bogdan, Željko ; Jakoplić, Zlatko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Modelling, Simulation and Optimization / Kalpić, Damir ; Hljuz Dobrić, Vesna - : Sveučilišni računski centar Sveučilišta u Zagrebu (Srce), 1998, 463-470

Skup
20th International Conference on Information Technology Interfaces ‘98

Mjesto i datum
Pula, Hrvatska, 16.06.1998. - 19.06.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
furnace heat accumulation; transient temperature distribution; mathematical modeling

Sažetak
The problem of transient temperature behavior of the steam generator evaporator tube walls caused by the feedwater system fallout is presented in this paper. The tubes are covered with brick material as to be protected from overheating in the first part of the furnace, while in the second part they are exposed directly to the hot gases. During normal operation the accumulated heat energy in the furnace wall may cause the tube wall temperature excursions in the shutdown period. The representative cutouts of the furnace walls in the three distinguished furnace positions are modeled by the code NISA with the purpose of obtaining transient temperature profiles across furnace walls. The steady-state conditions are tested and the results compared with the existing measurement data prior to the transient analysis. The tube wall temperatures really exceed maximum permissible temperature for the given tube material some 280 min after the feedwater system fallout has been shown by the transient analysis.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA