Automatically controls the volume of discharge air from 0 to 100 % by matching the demand of the system air 采用世界知名品牌，可根据系统用气量的要求， 0 - 100 %自动调节气量，降低运行费用
The model has 3 parts : margin cost of generation transmission cost and transmission constraints cost . the detail is 1 此实时电价模型包括三部分：边际发电费用、网络运行费用和网络约束费用。
It has some features such as low cost and high efficiency , easy to operation and convenient to maintain 设备规格为单班处理畜禽粪便10吨- 20吨，投资少见效快、运行费用低、占地面积小、操作简单、维护方便。
But the two ways are not ideal to realize the economical operation without full use of the policy of time - of - use electricity price 这两种方式都不能充分利用分时电价，实现最优化运行（即运行费用最低） 。
It has characteristics of convenient installation , low cost , no operation expenses and preventing unexpected production stopping from happening 它具有安装方便、成本低、无运行费用、能防止意外停产等特点。
Meanwhile , authors analyzed the effects of some factors , such as solar heating hours , domsteic hot water load on the system economy 然后将其与常规热水系统进行比较，对比其初投资、运行费用，综合热价等指标。
Represents the control method of cold and heat sources and hot water storage tank , and analyses the initial investment and running costs 介绍了空调冷热源和贮热水箱的控制方法，分析了系统的初投资和运行费用。
The optimal control plays an important role in water supply systems . much operating cost can be saved through a reasonable control scheme 给水管网经济调度在供水系统中作用重大，合理的调度方案可以节约大量的运行费用。
In this paper , a heat supply approach based on utilizing industrial low temperature waste heat as the input of high temperature heat pump is introduced 它不仅使供暖环境实现零污染，而且运行费用是目前各供暖费用中最低的。
The objective of hydrogen network is the lowest cost , making full use of hydrogen resources and meeting the demands of consumers 以充分利用氢资源，满足耗氢装置的要求，以氢网络运行费用最低为目标，合成最优的氢网络结构。
