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Measurement of Pressure Drop in a Liquid Metal Reactor Fuel Assembly
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An experimental study has been carried out to measure the pressure drop in a 271-pin fuel assembly of a liquid metal reactor. The rod pitch to rod diameter ratio (P/D) of the fuel assembly is 1.2 and the wire lead length to rod diameter ratio (H/D) is 24.84. Measurements are made for five different sections in a fuel assembly; inlet orifice, fuel assembly inlet, wire-wrapped fuel assembly, fuel assembly outlet and fuel assembly upper region. A series of water experiments have been conducted changing flow rate and water temperature. It is shown that the pressure drops in the inlet orifice and in the wire-wrapped fuel assembly are much larger than those in other regions. The measured pressure drop data in a wire-wrapped fuel assembly region is compared with the existing four correlations. It is shown that the correlation proposed by Cheng and Todreas fits the best with the present experimental data among the four correlations considered.
Title: Measurement of Pressure Drop in a Liquid Metal Reactor Fuel Assembly
Description:
An experimental study has been carried out to measure the pressure drop in a 271-pin fuel assembly of a liquid metal reactor.
The rod pitch to rod diameter ratio (P/D) of the fuel assembly is 1.
2 and the wire lead length to rod diameter ratio (H/D) is 24.
84.
Measurements are made for five different sections in a fuel assembly; inlet orifice, fuel assembly inlet, wire-wrapped fuel assembly, fuel assembly outlet and fuel assembly upper region.
A series of water experiments have been conducted changing flow rate and water temperature.
It is shown that the pressure drops in the inlet orifice and in the wire-wrapped fuel assembly are much larger than those in other regions.
The measured pressure drop data in a wire-wrapped fuel assembly region is compared with the existing four correlations.
It is shown that the correlation proposed by Cheng and Todreas fits the best with the present experimental data among the four correlations considered.
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