EXPERIMENTAL AND ANALYTICAL RESULTS FOR C OOLING PERFORMANCE OF HTTR CORE BOTTOM STRUCTURE USING HENDEL-T-2

Citation
I. Ioka et al., EXPERIMENTAL AND ANALYTICAL RESULTS FOR C OOLING PERFORMANCE OF HTTR CORE BOTTOM STRUCTURE USING HENDEL-T-2, Nippon Genshiryoku Gakkaishi, 37(3), 1995, pp. 217-227
Citations number
NO
Categorie Soggetti
Nuclear Sciences & Tecnology
ISSN journal
00047120
Volume
37
Issue
3
Year of publication
1995
Pages
217 - 227
Database
ISI
SICI code
0004-7120(1995)37:3<217:EAARFC>2.0.ZU;2-F
Abstract
An In-core Structure Test Section (HENDEL-TB) is a full scale simulati on model of the core bottom structure of High Temperature Engineering Test Reactor (HTTR). Experimental studies on cooling performance of th e core bottom structure were carried out by the use of the HENDEL-T-2 to verify integrity of the metal structures. Experimental results show ed that the temperature distribution of the core bottom structure was almost uniform in the circumferential direction. The temperatures of t he metal structures were lower than the design temperatures. The heat transfer from the hot helium gas to the cold helium gas was negligibly small in the core bottom structure. The leakage flow of cold helium g as through the gaps of core bottom structure increased with the pressu re difference between the hot and cold helium gases. However, there wa s no effect of the pressure difference on the temperature distribution of the core bottom structure in the circumferential direction. The de tailed temperature distribution of the core bottom structure in HTTR w as calculated by a three-dimensional thermal analysis code. Remarkably hot region in the core support plate could not be found in the analys is. The calculated temperatures of the metal structures for HTTR were lower than the design temperatures at the end of HTTR's life.