Open Access

Table 1

Design variables and associated domain of values.

Design variables x= [x1, …, x6]T  Name  Unit Domain Ω(X) = [x−; x+]

  x x+ Type
Inlet product temperature (x1) Tpi °C 70 90 Continuous
Inlet coolant temperature (x2) Tcl °C 15 25 Continuous
Inlet coolant flow rate (x3) qcl t/h 1 20 Continuous
Flow rate of the coolant added to the low-pressure condenser (x4) qcl+ t/h 1 25 Continuous
Number of plates in the low-pressure condenser (x5) NLP 6 250 Discrete
Number of plates in the very low-pressure condenser (x6) NVLP 6 250 Discrete

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