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旋轉離心(xin)式噴(pen)(pen)霧(wu)機(ji)配合風機(ji)之(zhi)(zhi)使用(yong)為新式之(zhi)(zhi)風機(ji)微(wei)霧(wu)法(fa)。此方法(fa)對水(shui)(shui)質與(yu)水(shui)(shui)壓的要求不高為其zui大優(you)點。 其產生之(zhi)(zhi)霧(wu)粒(li)大小約為 43微(wei)米, 若噴(pen)(pen)霧(wu)機(ji)可懸吊在(zai)作物(wu)上(shang)方 1 公尺或(huo)以(yi)上(shang),則(ze)所噴(pen)(pen)出之(zhi)(zhi)水(shui)(shui)霧(wu)在(zai)落在(zai)作物(wu)葉面上(shang)之(zhi)(zhi)前均可*蒸發,效率達 100% 。
水霧降溫
依據所噴出之水珠大小,風機水霧法又分為水霧(mist)與細霧(micromist);其顆粒大小分別為1 mm 與0.1 mm。由于水霧之顆粒較大,噴出之后很快就落至植株體上或著地,是以蒸發效果不好,后者大約只有50%的水份能有效蒸發帶走蒸發潛熱,前者能帶走的熱更少。更有甚者,前者可能造成過濕而導致植株的腐敗,使用上不可不慎。
水霧降溫
風機(ji)(ji)濕(shi)簾法與風機(ji)(ji)水(shui)霧(wu)(wu)法之(zhi)(zhi)水(shui)墻與水(shui)霧(wu)(wu)產生設備通(tong)(tong)常只安裝在溫(wen)(wen)(wen)室之(zhi)(zhi)一(yi)側,是(shi)以無(wu)可避免的(de)溫(wen)(wen)(wen)室內會(hui)有(you)溫(wen)(wen)(wen)度梯度的(de)現象(xiang)。風機(ji)(ji)微(wei)霧(wu)(wu)法通(tong)(tong)常有(you)多重『水(shui)線』,若(ruo)在吸氣(qi)口側廣設預(yu)冷水(shui)線,在室內氣(qi)流之(zhi)(zhi)中途設再(zai)冷水(shui)線,一(yi)般降(jiang)溫(wen)(wen)(wen)效果(guo)較佳且均勻(yun)。設計良好之(zhi)(zhi)風機(ji)(ji)微(wei)霧(wu)(wu)型(xing)降(jiang)溫(wen)(wen)(wen)設備可將(jiang)溫(wen)(wen)(wen)室溫(wen)(wen)(wen)度降(jiang)至同于外界大(da)氣(qi)之(zhi)(zhi)濕(shi)球溫(wen)(wen)(wen)度。噴霧(wu)(wu)系統的(de)降(jiang)溫(wen)(wen)(wen)能力(li)除了與噴嘴的(de)效率(lv)相關之(zhi)(zhi)外,其噴水(shui)量是(shi)否(fou)適量亦是(shi)一(yi)重要關鍵。
霧(wu)(wu)化(hua)(hua)(hua)噴(pen)(pen)槍(qiang)(qiang)由兩層套(tao)管(guan)(guan)組成(cheng),外(wai)(wai)管(guan)(guan)為不銹(xiu)鋼水(shui)(shui)(shui)(shui)管(guan)(guan),外(wai)(wai)管(guan)(guan)頭(tou)(tou)部(bu)(bu)(bu)(bu)(bu)裝(zhuang)有霧(wu)(wu)化(hua)(hua)(hua)噴(pen)(pen)頭(tou)(tou),噴(pen)(pen)頭(tou)(tou)頂(ding)部(bu)(bu)(bu)(bu)(bu)為半球形(xing),頂(ding)部(bu)(bu)(bu)(bu)(bu)中(zhong)(zhong)心(xin)開有孔(kong)(kong),該孔(kong)(kong)為霧(wu)(wu)化(hua)(hua)(hua)水(shui)(shui)(shui)(shui)噴(pen)(pen)出(chu)通道(dao)。內(nei)管(guan)(guan)為不銹(xiu)鋼氣(qi)管(guan)(guan),不銹(xiu)鋼氣(qi)管(guan)(guan)頭(tou)(tou)部(bu)(bu)(bu)(bu)(bu)裝(zhuang)有氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui),氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)外(wai)(wai)徑(jing)和水(shui)(shui)(shui)(shui)路(lu)(lu)管(guan)(guan)道(dao)內(nei)徑(jing)相同(tong),氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)中(zhong)(zhong)心(xin)開孔(kong)(kong),開孔(kong)(kong)尺寸根據噴(pen)(pen)水(shui)(shui)(shui)(shui)量來定(ding)(ding),在(zai)氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)外(wai)(wai)部(bu)(bu)(bu)(bu)(bu)開有四條凹(ao)槽(cao),四條凹(ao)槽(cao)提供高(gao)(gao)壓(ya)水(shui)(shui)(shui)(shui)通道(dao),在(zai)氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)頂(ding)部(bu)(bu)(bu)(bu)(bu)平面開有十字交叉凹(ao)槽(cao)與氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)外(wai)(wai)部(bu)(bu)(bu)(bu)(bu)四條凹(ao)槽(cao)相對應(ying)連同(tong),頂(ding)部(bu)(bu)(bu)(bu)(bu)中(zhong)(zhong)心(xin)為氣(qi)路(lu)(lu)開孔(kong)(kong),這樣(yang)高(gao)(gao)壓(ya)水(shui)(shui)(shui)(shui)可以由氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)外(wai)(wai)部(bu)(bu)(bu)(bu)(bu)凹(ao)槽(cao)到達頂(ding)部(bu)(bu)(bu)(bu)(bu)凹(ao)槽(cao),氣(qi)路(lu)(lu)噴(pen)(pen)嘴(zui)(zui)(zui)(zui)中(zhong)(zhong)心(xin)孔(kong)(kong)噴(pen)(pen)出(chu)的(de)高(gao)(gao)壓(ya)空氣(qi)將高(gao)(gao)壓(ya)水(shui)(shui)(shui)(shui)噴(pen)(pen)到霧(wu)(wu)化(hua)(hua)(hua)噴(pen)(pen)頭(tou)(tou)中(zhong)(zhong)心(xin)孔(kong)(kong)中(zhong)(zhong),高(gao)(gao)壓(ya)氣(qi)水(shui)(shui)(shui)(shui)混合后噴(pen)(pen)出(chu)霧(wu)(wu)化(hua)(hua)(hua)噴(pen)(pen)頭(tou)(tou)并迅速擴張形(xing)成(cheng)霧(wu)(wu)化(hua)(hua)(hua)水(shui)(shui)(shui)(shui)。霧(wu)(wu)化(hua)(hua)(hua)噴(pen)(pen)槍(qiang)(qiang)尾(wei)部(bu)(bu)(bu)(bu)(bu)的(de)氣(qi)路(lu)(lu)管(guan)(guan)道(dao)連接(jie)外(wai)(wai)部(bu)(bu)(bu)(bu)(bu)高(gao)(gao)壓(ya)空氣(qi),水(shui)(shui)(shui)(shui)路(lu)(lu)管(guan)(guan)道(dao)連接(jie)外(wai)(wai)部(bu)(bu)(bu)(bu)(bu)高(gao)(gao)壓(ya)水(shui)(shui)(shui)(shui),氣(qi)路(lu)(lu)管(guan)(guan)道(dao)和水(shui)(shui)(shui)(shui)路(lu)(lu)管(guan)(guan)道(dao)由固定(ding)(ding)螺絲(si)在(zai)尾(wei)部(bu)(bu)(bu)(bu)(bu)固定(ding)(ding)。
噴霧(wu)(wu)(wu)法,此類系(xi)統的(de)(de)(de)使用早已存在(zai),卻是直(zhi)到zui近(jin)才廣(guang)泛被應(ying)(ying)用在(zai)溫室中(zhong)。噴霧(wu)(wu)(wu)系(xi)統所噴出之霧(wu)(wu)(wu)氣(qi)(fog )是由(you)水蒸氣(qi)和極(ji)細(xi)小的(de)(de)(de)水滴所組(zu)成(cheng)的(de)(de)(de)。傳統的(de)(de)(de)霧(wu)(wu)(wu)氣(qi)產生方(fang)式(shi)是水經由(you)高壓過程通過極(ji)小的(de)(de)(de)洞(噴嘴)所產生的(de)(de)(de)「云( cloud )」。就理(li)想(xiang)狀(zhuang)況(kuang)而言,「云」應(ying)(ying)該能懸浮在(zai)空中(zhong),且維持一段(duan)時間,是以能*蒸發。另外(wai),霧(wu)(wu)(wu)氣(qi)的(de)(de)(de)產生亦可透過超音波振盪方(fang)式(shi)或旋轉(zhuan)離心方(fang)式(shi)產生。
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