From the results, it is clear that the application of air-bypass, reset control, setback control and better start-stop times will result in a straight payback period of only 9 months.

• 从结果中，可以清楚地看到，应用空气旁路，复位控制，挫折的控制和更好的起止时间将导致直接投资回收期只有9个月。