Analyzing the performance curves of pumps and network in a variable flow pumping system , concluding the influence factors of energy saving and the optimal ranges of variable frequency drive ( vfd ) 摘要通過分析變頻水泵及管網(wǎng)系統(tǒng)在變工況下的特性曲線,得出影響水泵變頻節(jié)能效果的主要因素和變頻調(diào)速的適用范圍。
Variable flow chilled water system ( vwv ) is an effective energy - saving measure , which has a smaller size of pipe and equipment than the normal ones for it has considered the dispersing rate of the load in the systems 空調(diào)變水量系統(tǒng)是一種有效的節(jié)能手段,并且由于它考慮了系統(tǒng)的同時(shí)使用率,系統(tǒng)管道及設(shè)備將比常規(guī)的小。
In addition , the usaf continues to fund development work of the aerojet ( formerly atlantic research ) variable flow ducted rocket ramjet system as a future propulsion option for an extended range aam 此外,美國空軍繼續(xù)投資于航空噴氣研究所(原來的大西洋研究所)的可變噴流管火箭發(fā)動(dòng)機(jī)系統(tǒng),將其作為增程空空導(dǎo)彈的未來推進(jìn)選項(xiàng)。
From this paper , a new optimized method and its program in the designing chilled water system were presented , and a scheme to convert a constant flow system to variable flow system was also brought forward 通過本文的研究,提出了一種新的空調(diào)冷水系統(tǒng)最優(yōu)化設(shè)計(jì)方法,并編制了計(jì)算軟件;提出了將定水量系統(tǒng)改造為變水量系統(tǒng)的方案。
Second , the conclusion is drawn that the fit model can be gained after the simulation of different models compared with the measured temperature in practice . the components model of variable flow system and control system are set up 然后建立變流量系統(tǒng)部件的數(shù)學(xué)模型及控制系統(tǒng)部件的數(shù)學(xué)模型并進(jìn)行控制回路的模擬,并提出基于simulink的控制參數(shù)整定方法。