The fouling and the effect of noncondensable gases are incorporated into the calculation of overall heat transfer co-efficient for condensers.
Said Alforjani Said, Mansour Emtir, Iqbal M. Mujtaba 2013, 'Flexible Design and Operation of Multi-Stage Flash (MSF) Desalination Process Subjectto Variable Fouling and Variable Freshwater Demand', Processeshttp://www.mdpi.com/2227-9717/1/3/279. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)