Unverified90% confidenceDecision RuleTime unknown
卫生间面积×层高×换气次数(卫生间取10-15次/h)=所需风量，如4㎡×2.6m×12=约125m³/h，选风量≥150m³/h留余量
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Unverified卫生间面积×层高×换气次数(卫生间取10-15次/h)=所需风量，如4㎡×2.6m×12≈125m³/h，选购风量应留20%余量选150m³/h以上机型98% similarUnverified卫生间排风扇按容积换算，风量需满足每小时换气10-15次，即风量(m³/h)≥卫生间体积×12；标准3-5㎡卫生间选风量150-200m³/h即可95% similarUnverified卫生间排气扇风量按空间体积计算，风量(m³/h)应≥卫生间体积×10（换气次数），如4㎡×2.6m高的卫生间约需270m³/h以上94% similarUnverified卫生间排气扇风量按空间体积计算：风量(m³/h) ≥ 卫生间面积×高度×换气次数(5-8次/h)，普通4㎡卫生间需80-120 m³/h93% similarUnverified卫生间排气扇风量应按空间换气次数计算：风量(m³/h)≥卫生间面积×层高×换气次数(8-10次/h)，如4㎡×2.6m×10=104m³/h，选120m³/h以上型号留余量93% similar
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