Optimal Pipe Size Design for Looped Irrigation Water Supply System Using Harmony Search: Saemangeum Project Area

Table 7

Optimal design results and cost comparison of the initial plan (three cases).

Target water supply network	Initial design costs ()	Optimal design costs ()	Variation (%)
Loop type (plan 1)	11,200,114,720	10,182,733,295	−9.08
Branch type (plan 2)	10,484,719,750	10,044,962,405	−4.19
Pump type (plan 3)	11,503,515,255	11,586,379,380	+0.72