A race of technology against time: With things having gone this far, and seeing as it is impossible to replace or move the original ducts, the only thing that can be done is to replace the centrifugal chiller units with ones that use HCFC-22 or HFC-134a, like reciprocating chiller type air conditioners.
科技與時間競賽事已至此，在原有管線不可能更動的情況下，只能將離心式主機換裝為 HCFC-22 或 HFC-134a 冷媒的空調機種，例如往復式空調或螺旋式空調機。