- #1
jbs87
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I am trying to figure out exactly how the feedback works in this process. What I know so far
when more power is needed
•This greater loading causes more heat to be extracted from the heat exchanger, and for a short period of time, the heat capacity of the heat exchanger and coolant can normally supply the additional load.
• However, this extra energy extracted from the system requires that the temperature of the coolant into the reactor must drop.
The dropping of the inlet temperature causes a drop in the average temperature, and consequently the reactor will posses more reactivity.
• If the reactor was initially in a critical state, it now temporarily becomes supercritical.
• The output temperature of the coolant rises, and more energy is then available from the reactor.
• Finally in the steady state the reactor returns to its critical condition with the average coolant temperature the same as it was initially.
Now if you include fuel temperature feedback, won't the increase in reactivity result in an increase in fuel temperature and due to negative feedback cause a decrease in reactivity. Won't this decrease cancel out the increase in reactivity due to decrease in inlet coolant temperature. So how does this process produce power? Any help would be much appreciated
when more power is needed
•This greater loading causes more heat to be extracted from the heat exchanger, and for a short period of time, the heat capacity of the heat exchanger and coolant can normally supply the additional load.
• However, this extra energy extracted from the system requires that the temperature of the coolant into the reactor must drop.
The dropping of the inlet temperature causes a drop in the average temperature, and consequently the reactor will posses more reactivity.
• If the reactor was initially in a critical state, it now temporarily becomes supercritical.
• The output temperature of the coolant rises, and more energy is then available from the reactor.
• Finally in the steady state the reactor returns to its critical condition with the average coolant temperature the same as it was initially.
Now if you include fuel temperature feedback, won't the increase in reactivity result in an increase in fuel temperature and due to negative feedback cause a decrease in reactivity. Won't this decrease cancel out the increase in reactivity due to decrease in inlet coolant temperature. So how does this process produce power? Any help would be much appreciated