The installation of more than one boiler may be considered to cope with varying demands over the working cycle. The boilers may be of different types, depending on the demand curve, cycle times, etc.
The use of sequential boilers may be limited when high steam availability guarantees are required.
裝設2部以上的鍋爐可考慮用來對應作業當中需求蒸汽的變動。 這些鍋爐不一定要同一型式，可以依需求曲線及作業時間來決定。
