plc和變頻器在中央空調(diào)節(jié)能改造中的應(yīng)用分析畢業(yè)論文-全文預(yù)覽
【正文】 ral equipment department omputer capacity and the power rate fast expand acmodates, but still could not catch up with the speed which added with the electric quantity,the power supply situation sternly, the energy conservation electricity saving has been imminent. The central airconditioning system is one of modern largescale building essential necessary facilities, the electrical energy consumption is extremely big, approximately poses the building total electrical energy consumption 50%. Because the central airconditioning system all is according to High loading and the adding certain remainder design a year, under the full load runs in fact many only has 10 days, even more than 10 hours, nearly the major part time load all runs below 70%. In the usual central airconditioning system freezes the host puter the load to be able along with the season temperature hange automatic control load, but the freezing which matches with the freezing host puter pumps, cooling pumps actually cannot the automatic control load, ran nearly for a long time under 100% load, has created the energy enormous waste, also worsened the central air conditioning run conditions and the run quality. Is day by day mature along with the frequency conversion technology, using the frequency changer, PLC, ponent the and so on digitalanalog conversion module, temperature sensor, temperature module organic synthesis, he framing temperature difference closed loop automatic control system, the automatic control water pump delivery rate, achieved the energy conservation target has provided the reliable engineering factor. Essential character： Frequency PLC energy conservation temperature difference closed loop automatic control central airconditioning system第一章 緒論 中央空調(diào)是由一臺(tái)主機(jī)通過(guò)風(fēng)道過(guò)風(fēng)或冷熱水管接多個(gè)末端的方式來(lái)控制不同的 房間以達(dá)到室內(nèi)空氣調(diào)節(jié)目的的空調(diào)。關(guān)鍵字：變頻器中央空調(diào)系統(tǒng)是現(xiàn)代大型建筑物不可缺少的配套設(shè)施之一，電能的消耗非常大，約占建筑物總電能消耗的50%。對(duì)畢業(yè)設(shè)計(jì)（論文）的特殊評(píng)語(yǔ)： 答辯委員會(huì) 主任（簽字）技術(shù)條件：技術(shù)要求與工作計(jì)劃：時(shí)間安排：指導(dǎo)教師： 年 月 日教研室主任： 年 月 日 黑 龍 江 建 筑 職 業(yè) 技 術(shù) 學(xué) 院畢 業(yè) 論 文(設(shè) 計(jì)) 評(píng) 語(yǔ) 年 月 日學(xué)生 班級(jí) 專業(yè) 畢業(yè)設(shè)計(jì)(論文)題目： PLC和變頻器在中央空調(diào)節(jié)能改造中的應(yīng)用指導(dǎo)教師評(píng)語(yǔ)： 指導(dǎo)教師(簽字) 評(píng)閱人評(píng)語(yǔ)：
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