Fuzzification process


In order to accomplish the minimum usage of heating and cooling utilities, it is necessary to maximize the heat exchange among process streams. In this context, one can use a very useful graphical technique referred to as the thermal-pinch diagram . This technique is primarily based on the work of Linnhoff and coworkers (e.g., Linnhoff and Hindmarsh, 1983), Umedaefal. (1979) and Hohmami (1971). The first step in constructing the thermal-pinch diagram is creating a global representation for all the hot streams by plotting the enthalpy exchanged by each process hot stream versus its temperature. Hence, a hot stream losing sensible heat is represented as an arrow whose tail corresponds to its supply temperature and its head corresponds to its target temperature. Assuming constant heat capacity over the operating range, the slope of each arrow is equal to FuCp,u- The vertical distance between the tail and the head of each arrow represents the enthalpy lost by that hot stream according to the following expression  [c.219]


See pages that mention the term Fuzzification process : [c.74]    [c.190]    [c.374]    [c.18]    [c.309]   
Advanced control engineering (2001) -- [ c.331 ]