Experimental investigation of the pressure drop and friction factor of supercritical water in a 2 × 2 rod bundle

2022 ◽  
Vol 166 ◽  
pp. 108732
Author(s):  
Gang Wu ◽  
Han Wang ◽  
Qincheng Bi
Keyword(s):  
Experimental Investigation ◽  
Pressure Drop ◽  
Friction Factor ◽  
Supercritical Water ◽  
Rod Bundle

Experimental Investigation on Heat Transfer and Pressure Drop of Supercritical Water Flows in 2×2 Bundle With Wire Wraps

2017 ◽  
Author(s):  
Li Hong-bo ◽  
Hu Zhen-xiao ◽  
Lu Dong-hua ◽  
Gu Han-yang
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Pressure Drop ◽  
Supercritical Water ◽  
Critical Conditions ◽  
Bulk Temperature ◽  
Experimental Conditions ◽  
Water Flows ◽  
Dc Power ◽  
Test Loop

An experimental investigation on heat transfer of supercritical water and transient heat transfer during pressure drop from supercritical to sub-critical conditions in a 2×2 bundle with two channels has been carried out on the supercritical water multipurpose test loop II (SWAMUP-II). The bundle consists of four heated rods with an O.D. of 10 mm and a pitch-to-diameter ratio of 1.18. The 2×2 bundle with wire wrap is installed into a square assembly box with rounded corners by which the test section is separated into two channels. Water flows downward in the first channel between the pressure tube and the assembly box, and then turns upward in the second channel inside the assembly box to cool the four heated rods, which are directly heated by DC power. The experimental conditions are as follows: pressure ranging from 16 to 26 MPa, mass flux from 400 to 1450 kg/m2s, heat flux from 250 to 1000 kW/m2, bulk temperature from 280 to 500 °C, and pressure drop rate of 1 and 2 MPa/min. The experimental data are obtained and heat transfer characteristics discussed.

Experimental Investigation of the Subchannel Axial Pressure Drop and Hydraulic Characteristics of a 61-Pin Wire Wrapped Rod Bundle

2021 ◽  
Author(s):  
Craig Menezes ◽  
Rodolfo Vaghetto ◽  
Yassin A. Hassan
Keyword(s):  
Pressure Drop ◽  
Friction Factor ◽  
Flow Characteristics ◽  
Reynolds Numbers ◽  
Experimental Measurements ◽  
Local Pressure ◽  
Computational Tools ◽  
Hydraulic Behavior ◽  
Rod Bundle ◽  
Geometrical Features

Abstract Wire-wrapped hexagonal fuel bundles have been extensively investigated due to their enhanced heat transfer and flow characteristics. Experimental measurements are important to study the thermal-hydraulic behavior of such assemblies and to validate and improve the predicting capabilities of specialized correlations and computational tools. Presently, very limited experimental data is available on the local subchannel pressure drop. Experimental measurements of subchannel pressure drop were conducted in a 61-pin wire-wrapped rod bundle replica, for Reynolds numbers between 190 and 22,000. Specialized instrumented rods were utilized to measure the local pressure drop and estimate the subchannels' friction factor. Three interior subchannels, one edge subchannel and one corner subchannel were selected to study the effects of location and flow regimes on the friction factor and hydraulic behavior. The transition boundaries from laminar to transitions regimes, and from transition to turbulent regimes were estimated for the subchannels analyzed. The results were found in agreement with the predictions of the Upgraded Cheng and Todreas Detailed Correlation (UCTD). The results of the experimental campaign provided a better understanding of hydraulic behavior of the subchannels of wire-wrapped bundles, in relation to its geometrical features

Experimental investigation on pressure drop of supercritical water in an annular channel

2018 ◽  
Vol 131 ◽  
pp. 47-57 ◽  
Author(s):  
Han Wang ◽  
Qincheng Bi ◽  
Gang Wu ◽  
Zhendong Yang
Keyword(s):  
Experimental Investigation ◽  
Pressure Drop ◽  
Supercritical Water ◽  
Annular Channel

Experimental investigation on heat transfer to supercritical water in a three-rod bundle with spacer grids

2020 ◽  
Vol 164 ◽  
pp. 114466 ◽  
Author(s):  
Shuo Chen ◽  
Hanyang Gu ◽  
Maolong Liu ◽  
Yao Xiao ◽  
Dawei Cui
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Supercritical Water ◽  
Spacer Grids ◽  
Rod Bundle

Experimental investigation on heat transfer and pressure drop of supercritical water flows in an inclined rifled tube

2016 ◽  
Vol 107 ◽  
pp. 209-218 ◽  
Author(s):  
Alireza Taklifi ◽  
Pedram Hanafizadeh ◽  
Mohammad Ali Akhavan Behabadi ◽  
Abbas Aliabadi
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Pressure Drop ◽  
Supercritical Water ◽  
Water Flows
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