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關于空壓機比功率的幾個誤區

2022-06-28

比功率是國家對于容積式壓縮機的功耗評定指標。

1.電機標稱功率或空壓機的銘牌功率與輸入功率混淆
   空壓機行業一般整機銘牌上標稱功率都為電機軸功率(電機輸出功率),事實上除了電機本身有效率因素、服務系數外,機組內還有其它功耗,如散熱風扇,變頻器等,例如一般標稱功率為37kw的空壓機,實際整個機組的輸入功率在45kw左右(各廠家有差異)。所以整機的比功率應該用整機的輸入功率去計算,而不是用電機標稱功率(軸功率)去計算。

2.不同廠家同一種功率銘牌的空壓機,并不是某廠家銘牌排氣量大比功率就越低,或者某廠家銘牌標稱功率低就越好。比功率是實際測得的輸入總功率和排氣量的比值=(實際電流*電壓)/排氣量,單純說排量、銘牌功率一個數據都不能評判一臺機器是否節能。

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