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收費制定節能方案免費指導

發布時間:2020-09-03 15:12
熱度:106

  大部分中央空調的主機有自動加載和卸載的功能,且主機有螺桿式、活塞式、離心式等多種機型,不全是平方轉矩負載,對其進行節電改造投資大,投資回收期長,一般不改動空調的主機。

  因此,中央空調節能改造主(zhu)要(yao)把目(mu)光集中(zhong)在了循環(huan)系(xi)(xi)統(tong)上。如果對(dui)(dui)循環(huan)系(xi)(xi)統(tong)進(jin)行節電(dian)(dian)改造,使(shi)主(zhu)機(ji)也(ye)能(neng)(neng)間接節電(dian)(dian),將是一(yi)個很(hen)好的(de)(de)(de)中(zhong)央(yang)空(kong)調(diao)節能(neng)(neng)方案。事(shi)實證明,通過對(dui)(dui)冷(leng)(leng)凍(dong)泵(beng)(beng)(beng)與冷(leng)(leng)卻(que)(que)泵(beng)(beng)(beng)的(de)(de)(de)合理化控制,不(bu)(bu)但(dan)循環(huan)系(xi)(xi)統(tong)本身可(ke)節能(neng)(neng)30~60%,而且可(ke)以促進(jin)主(zhu)機(ji)間接節能(neng)(neng)5~10%。中(zhong)央(yang)空(kong)調(diao)系(xi)(xi)統(tong)中(zhong)的(de)(de)(de)循環(huan)系(xi)(xi)統(tong)、冷(leng)(leng)卻(que)(que)泵(beng)(beng)(beng)與冷(leng)(leng)凍(dong)泵(beng)(beng)(beng)除個別小型機(ji)型外(wai),大部(bu)分為(wei)多泵(beng)(beng)(beng),隨著天氣(qi)變化而啟動不(bu)(bu)同數量(liang)的(de)(de)(de)泵(beng)(beng)(beng),即:氣(qi)溫高時(shi)多開(kai)(kai)泵(beng)(beng)(beng),氣(qi)溫低(di)時(shi)少(shao)開(kai)(kai)泵(beng)(beng)(beng),表面上看已經采取了節能(neng)(neng)手(shou)段(duan),但(dan)是有(you)些情況是沒有(you)辦法解決的(de)(de)(de),例(li)如開(kai)(kai)一(yi)臺(tai)(tai)泵(beng)(beng)(beng)不(bu)(bu)夠開(kai)(kai)兩臺(tai)(tai)泵(beng)(beng)(beng)浪費的(de)(de)(de)問題(ti),開(kai)(kai)0.7臺(tai)(tai)泵(beng)(beng)(beng)就能(neng)(neng)滿足的(de)(de)(de)情況,但(dan)只能(neng)(neng)開(kai)(kai)一(yi)臺(tai)(tai)泵(beng)(beng)(beng)而造成(cheng)浪費。中(zhong)央(yang)空(kong)調(diao)節能(neng)(neng)系(xi)(xi)統(tong)就是以冷(leng)(leng)凍(dong)水與冷(leng)(leng)卻(que)(que)水的(de)(de)(de)進(jin)出(chu)水溫度(du)為(wei)控制依(yi)據,對(dui)(dui)冷(leng)(leng)凍(dong)泵(beng)(beng)(beng)、冷(leng)(leng)卻(que)(que)泵(beng)(beng)(beng)及送風系(xi)(xi)統(tong)的(de)(de)(de)風機(ji)進(jin)行變頻控制,使(shi)中(zhong)央(yang)空(kong)調(diao)系(xi)(xi)統(tong)始終運行在平穩的(de)(de)(de)狀態(tai),從而達(da)到節電(dian)(dian)的(de)(de)(de)目(mu)的(de)(de)(de)。

  中央空調節(jie)能改(gai)造措施-降低冷(leng)卻水溫(wen)度

  由于冷(leng)卻水(shui)(shui)(shui)(shui)溫度(du)(du)越低(di),冷(leng)機(ji)(ji)的(de)(de)制(zhi)冷(leng)系數就(jiu)越高(gao)。冷(leng)卻水(shui)(shui)(shui)(shui)的(de)(de)供水(shui)(shui)(shui)(shui)溫度(du)(du)甸(dian)上升1攝氏度(du)(du),冷(leng)機(ji)(ji)的(de)(de)COP下降近4%。降低(di)冷(leng)卻水(shui)(shui)(shui)(shui)溫度(du)(du)就(jiu)需要加強冷(leng)卻塔的(de)(de)運(yun)行管理。首先,對于停(ting)止運(yun)行的(de)(de)冷(leng)卻塔,其(qi)進出水(shui)(shui)(shui)(shui)管的(de)(de)閥門應(ying)該關(guan)閉;否則,因為(wei)來(lai)自(zi)停(ting)開的(de)(de)冷(leng)卻塔的(de)(de)水(shui)(shui)(shui)(shui)溫度(du)(du)較高(gao),混合后的(de)(de)冷(leng)卻水(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)溫就(jiu)會提高(gao),冷(leng)機(ji)(ji)的(de)(de)制(zhi)冷(leng)系數就(jiu)減(jian)低(di)了。其(qi)次,冷(leng)卻塔使用(yong)一段(duan)時(shi)間后,應(ying)及時(shi)檢修,否則冷(leng)卻塔的(de)(de)效(xiao)率會下降,不能充(chong)分地為(wei)冷(leng)卻水(shui)(shui)(shui)(shui)降溫。

  中央空調(diao)節能(neng)改造措施-提高(gao)冷凍水溫度

  冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)溫(wen)(wen)(wen)度(du)(du)(du)越高(gao),冷(leng)(leng)(leng)(leng)機(ji)的(de)制(zhi)冷(leng)(leng)(leng)(leng)效(xiao)率(lv)就越高(gao)。冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)供水(shui)溫(wen)(wen)(wen)度(du)(du)(du)提高(gao)1攝氏度(du)(du)(du),冷(leng)(leng)(leng)(leng)機(ji)的(de)制(zhi)冷(leng)(leng)(leng)(leng)系數可提高(gao)3%,所以(yi)在日常運行中不(bu)要(yao)盲目降低(di)冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)溫(wen)(wen)(wen)度(du)(du)(du)。首先,不(bu)要(yao)設置過低(di)的(de)冷(leng)(leng)(leng)(leng)機(ji)冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)設定溫(wen)(wen)(wen)度(du)(du)(du)。其次一定要(yao)關閉(bi)停止(zhi)運行的(de)冷(leng)(leng)(leng)(leng)機(ji)的(de)水(shui)閥,防止(zhi)部分冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)走旁通(tong)管路,否則,經過運行中的(de)冷(leng)(leng)(leng)(leng)機(ji)的(de)水(shui)量(liang)就會減少,導(dao)致冷(leng)(leng)(leng)(leng)凍(dong)(dong)水(shui)的(de)溫(wen)(wen)(wen)度(du)(du)(du)被冷(leng)(leng)(leng)(leng)機(ji)降到過低(di)的(de)水(shui)平。

   中央空調節能(neng)改(gai)造措(cuo)施-新(xin)風系統的節能(neng)設計

  新風(feng)(feng)(feng)系統(tong)的(de)合理(li)使用,也可(ke)以(yi)有(you)效地(di)控制能耗(hao)(hao)使用量(liang)(liang)。在(zai)滿足衛生(sheng)條件的(de)情況下(xia),減(jian)少新風(feng)(feng)(feng)量(liang)(liang)或根(gen)據實際需要采(cai)用變風(feng)(feng)(feng)量(liang)(liang)系統(tong)進行(xing)調節。有(you)排風(feng)(feng)(feng)系統(tong)的(de),利用室(shi)內能量(liang)(liang)對新風(feng)(feng)(feng)進行(xing)預(yu)熱與(yu)預(yu)冷處理(li)(即熱回收(shou)技術)等都能夠(gou)有(you)效減(jian)少空調系統(tong)的(de)能耗(hao)(hao)。

  中央(yang)空調節能方案投(tou)資回報分析:

  冷凍泵及冷卻泵功率均為4.5kw,由于開機運行1臺不(bu)等(deng),即(ji)冷卻泵運行總功率為4.5KW×3=13.5KW,以節電率40%計(ji)算:

  改造前每(mei)小(xiao)時耗電:13.5kw×1h×0.9=12.15(度)(功(gong)率負荷系數:0.9)

  改造后每小(xiao)時耗(hao)電:13.5kw×1h×(1-35%)=8.78(度)

  每小時(shi)省電:149度-97度=3.38(度)

  每月節省費用(電價:0.9元/度): 3.38度×12小時(shi)×30天(tian)×0.9元/度=1095(元)

  全年節省費用按開機12個月計:1095元×12=13141(元)

  可以(yi)看出,中(zhong)央空(kong)調(diao)(diao)(diao)在(zai)進(jin)行(xing)節能改造以(yi)后,全年節省電費(fei)在(zai)1.3萬元左(zuo)右,經(jing)濟效益不(bu)言而(er)喻。中(zhong)央空(kong)調(diao)(diao)(diao)節能方案從空(kong)調(diao)(diao)(diao)本身(shen)著手外,我們還可以(yi)合(he)理設計圍護(hu)結構的(de)(de)構造,提(ti)高(gao)房屋門窗的(de)(de)密閉性(xing);室外溫度較(jiao)低時(尤其在(zai)夜間(jian)),注意房間(jian)的(de)(de)通風;白天注意采用遮陽措施;空(kong)調(diao)(diao)(diao)運行(xing)時盡量關閉門窗等措施,這樣在(zai)空(kong)調(diao)(diao)(diao)系統的(de)(de)任何負荷條(tiao)件下,都能既確保中(zhong)央空(kong)調(diao)(diao)(diao)系統的(de)(de)舒適(shi)性(xing),又能實(shi)現(xian)空(kong)調(diao)(diao)(diao)系統的(de)(de)最大節能。

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