Why bi-directional flow is chosen for PHT system?

Why bi-directional flow is chosen for PHT system?
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1 Answer

Answer :

Bi-directional flow is chosen for PHT system because,

a. Uniform temperature gradient is facilitated so there will be no differential thermal expansion.

b. It facilitates fuelling even when the reactor is working, which facilitates uniform neutron flux and this intern gives rise to maximum fuel burns up. 
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