EXPERIMENTAL STUDY ON THE EFFECT OF GAP CHANGE FOR HEAT TRANSFER CHARACTERISTICS IN AP1000 CONTAINTMENT MODEL

• Main Author: TRIAGUNG EDI HERMAWAN, NANANG
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/16644
• Institution: Institut Teknologi Bandung

containment system by air natural circulation. Containment is completed with inner baffle as air flow direction in order to optimize colling process. Gap wide between containment and baffle influence heat transfer process. The objective of this research for studying heat transfer characteristic influenced by change of gap wide. The research focused on the AP1000 containment model experimental study by variation of gap in some operational power. This research was started with inner baffle design by similarity test guide, assembly of baffle with some diameter variation and instrumentation needed, calibration sensors and data collecting. Data collecting was done in transient and steady condition by heat rate variation until the level of heat power reached 8,000 W. The result of this research shows that heat transfer coefficient would be decrease if air baffle was too narrow or too wide. Heat transfer reached maximum at 1 cm air baffle’s width. Critical heat flux on concentric cylinder reached on 418.28 <br /> <br /> <br /> <br /> W/m2 for 0.5 cm gap, 553.52 W/m2 for 1 cm gap, 1,068.17 W/m2 for 2 cms gap, and 841.97 W/m2 for 3 cms gap. On ellips sector, critical heat flux reached on 238.03 W/m2 for 0.5 cm gap, 553.52 W/m2 for 1 cm gap, 1,068.17 W/m2 for 2 cms gap, and 841.97 W/m2 for 3 cms gap.