How to design Air Cooled Condenser and specification guideline:
How to design ACC and specification guideline: 1. Fundamental design consideration: · Heat Load and Performance: Size the ACC at maximum steam flow and heat rejection duty at peak ambient temperature ( often summer ambient dry bulb temperature consider). The process margin and extreme conditions are also considered. · Low ITD means larger size ( size of the ACC inversely proportional to ITD), ITD is maintained 15-16deg.C · ITD = TCond – Tamb, ITD= Initial temperature difference · Heat Load/ ITD = Constant · Q rejected = U.A. LMTD where U is heat transfer coefficient, A is surface area of the condenser · Thermal duty= Q(required)= Ms x(h steam at turbine exhaust – h condensate), Ms is steam flow at tu...
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