Equation to calculate fouling factor Equation to calculate fouling factor dpugliesi (Chemical) (OP) 12 Dec 14 19:00 It exist any equation to calculate fouling factors? In particular I am interested to the case of demineralized water in closed loop at low pressure and a temperature around 50-70 °C. Thanks. RE: Equation to calculate fouling factor katmar (Chemical) 12 Dec 14 19:25 Fouling factors are determined through experience based on the fluid, the temperatures, the type of exchanger and the cleaning routine/philosophy. Your best bet is to find a table of them in a good heat transfer text or a company standards manual. Katmar Software - AioFlo Pipe Hydraulics http://katmarsoftware.com "An undefined problem has an infinite number of solutions"