%0 Journal Article %A %D 2021 %J International Journal of Natural Sciences Research %@ 2311-4746 %V 9 %N 1 %P 1-11 %T Optimization of the Total Annual Cost in Heat Exchanger Networks with Multiple Utilities %M 10.18488/journal.63.2021.91.1.11 %U http://www.pakinsight.com/archive/63/06-2021/1