Unverified88% confidenceDecision RuleTime unknown
全热交换器风量需按房屋面积×层高×换气次数计算，住宅通常取0.5-1次/小时，即100㎡×2.8m×0.8次≈224m³/h，选风量时应预留20%余量应对滤网积尘后的衰减
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