Calculation of water flow rate in the forced-circulation vaporization flue of a boiler
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“There are natural circulation and forced circulation in boilers, with forced circulation consisting of several sections of large numbers of water-cooled tubes containing a certain flow rate of cooling water that exchanges heat with the boiler’s flue gases. To ensure good cooling performance of the cooled components, vapor-water stratification in the system should be avoided. In a forced circulation system, with a high circulation ratio, low vaporization rate, and high circulation flow velocity, vapor-water stratification rarely occurs. So what is the calculation approach when designing the flow rate for forced circulation? I need it urgently, please help me, everyone. . .
Forcing circulation is generally used above the subcritical stage; should the circulation ratio of a forcing-circulation boiler be low? The circulation ratio for DC boilers is all 1.