A Comparison in Thermal-Hydraulics Analysis of Pwr1000 Using Fixed and Temperature Function of Thermal Conductivity

Isnaini, M. Darwis; Mutiara, Etty

doi:10.17146/jpen.2016.18.1.2849

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…The reactor has output power of 3400 MWt and effective flow rate for heat transfer of 48,443.7 ton/hr [9,11]. This research accomplishes the previous research about thermal-hydraulics analysis on radial and axial power fluctuation [9] as well as analysis using fixed and temperature function thermal conductivity [10].…”

Section: Introductionsupporting

confidence: 61%

“…The prediction was conducted using COBRA-EN code [8]. Some researchers have used COBRA-EN code for thermal-hydraulics analysis on radial and axial power fluctuation [9], comparison analysis using fixed and temperature function of thermal conductivity [10], validation of SIMBAT-PWR [11], optimizing gap conductance [12], capability test for VVER [13,14] as well as core and sub-channel analysis of VVER [15,16].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Fuel Temperature of Ap1000 Due to the Formation of Crud and Oxide Layer

2017

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PREDICTION OF FUEL TEMPERATURE OF AP1000 DUE TO THE FORMATION OF CRUD AND OXIDE LAYER.An analysis to predict the fuel temperature due to crud and oxide layer formed on the hot sub-channel cladding surface of AP1000 reactor has been performed. During reactor operation, the heat transfer and cooling process occur on the fuel cladding surface. During the heat exposure process, an oxide layer and crud are formed on the cladding surface. The decrease of heat transfer performance will increase the fuel and cladding temperatures. Therefore, the effect of fuel temperature increase during the heat exposure process has to be analyzed. The analysis was conducted for nominal power of 3400 MWt using COBRA-EN code, by varying the modular oxide thickness of 0, 20, 40, 60, 80, 100 and 120 µm, crud thickness of 0, 10 and 20 µm and black oxide thickness of 0, 10, 20, 30 and 40 µm. For full cycle hot sub-channel condition, the combination of crud thickness of 20 µm and modular oxide thickness of 115 µm give prediction of the peak fuel center line temperature and the peak cladding surface temperature of 1870.73°C and 609.40°C, respectively. However, the oxide layer is predicted only formed on hot sub-channel during BOC (about 40% of full cycle). The results show that the prediction of the peak fuel center line temperature and the peak cladding surface temperature are 1713.18°C and 451.87°C, respectively. Compared to the normal and fresh fuel conditions, the peak fuel center line temperature and the peak cladding surface temperature increase by 6.53% and 29.86%, respectively.

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