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全熱交換新風(fēng)換氣機(jī)組測試過程介紹
準(zhǔn)備好測定外氣狀態(tài)的溫/濕度計、大氣壓力計,并記錄下當(dāng)時外氣的狀態(tài),給被測試的全熱交換器通1Φ,
220V,50HZ的電源,將送風(fēng)扇的風(fēng)速調(diào)于極高檔,開機(jī)運(yùn)行,初始,孔口處在全開狀態(tài),此時,讀取壓
差流量計上顯示的孔口進(jìn)出口壓差和斜式流量計上顯示的靜壓值,接著,將孔口調(diào)至1/7開度,讀取孔口
進(jìn)出口壓差和靜壓值,將孔口調(diào)至2/7開度,讀取孔口進(jìn)出口壓差和靜壓值,依此類推,將孔口調(diào)至6/7開
度,讀取孔口進(jìn)出口壓差和靜壓值,及將孔口調(diào)至全開狀態(tài),讀取孔口進(jìn)出口壓差和靜壓值,一共紀(jì)錄8
對數(shù)據(jù)。將孔口進(jìn)出口壓差代入,其次是采用孔口節(jié)流調(diào)節(jié)法測定的回風(fēng)量,相關(guān)的測試過程、計算公式
與送風(fēng)量相同,因未能做詳盡測試,這里也便不再詳盡的解釋。再次是采用吸氣口法測定的回風(fēng)量,模擬
環(huán)境室系統(tǒng)采用吸氣口測定風(fēng)的流量時,相應(yīng)的計算公式有別于孔口節(jié)流調(diào)節(jié)法的送(回)風(fēng)風(fēng)量計算公式。
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