“Effectiveness” is the number every code and rating system quotes, but the value only means something if the test method is stated. This article maps the main heat recovery effectiveness test standards 以及它们如何定义该指标。
Definitions
- 显热效率 ηs = (T送风 − T室外) / (T排风 − T室外).
- 焓（全热）效率 ηt = (h送风 − h室外) / (h排风 − h室外），采用湿空气焓。
- 潜热效率 以湿度比替代焓。
The Standards
| 标准 | 范围 |
|---|---|
| EN 308 | 空气-空气和烟气热回收装置的试验程序（显热与潜热）。 |
| EN 13053 | 空气处理机组的额定与性能，包括热回收段和压力损失。 |
| EN 13141-7 | 住宅机械送排风换气机组的性能测试。 |
| AHRI 1060 / 1061 | Energy recovery ventilators — the method ASHRAE 90.1 references for its 50% minimum. |
Why the Method Matters
- Test conditions differ: Ecodesign measures ηt at −10 °C, 0 °C, and +10 °C outdoor; ASHRAE uses design heating and cooling conditions.
- 按 AHRI 1060 评定为75%的转轮，由于泄漏和结霜的处理方式不同，在 EN 308 下读数可能不同。
- Pressure drop is part of the story — a more effective core that needs a bigger fan can erase the saving, which is why 生态设计 SFP 限值 将效率与风机功率捆绑在一起。
Picking a Device Against the Numbers
Use the measured ηt 核查规范下限时从相关标准引用。对于非旋转式关键通风，比较一种 膜芯体 与一种 转轮 在同一试验基础上，并将压降纳入以下： AHU 选型计算.
常见问题
What is sensible effectiveness?
The ratio of temperature change delivered to the supply air versus the temperature difference between extract and outdoor air.
What is enthalpy effectiveness?
The same ratio using moist-air enthalpy, capturing both temperature and humidity recovery.
Which standards govern recovery testing?
EN 308, EN 13053, and EN 13141-7 in Europe, and AHRI 1060 and 1061 referenced by ASHRAE 90.1.
Why does the test method matter?
Different standards use different conditions and treat leakage and frost differently, so the same device can read differently, and pressure drop must also be considered.
常见问题
What is sensible effectiveness?
The ratio of temperature change delivered to the supply air versus the temperature difference between extract and outdoor air.
What is enthalpy effectiveness?
The same ratio using moist-air enthalpy, capturing both temperature and humidity recovery.
Which standards govern recovery testing?
EN 308, EN 13053, and EN 13141-7 in Europe, and AHRI 1060 and 1061 referenced by ASHRAE 90.1.
Why does the test method matter?
Different standards use different conditions and treat leakage and frost differently, so the same device can read differently, and pressure drop must also be considered.
相关产品
面向暖通空调与通风的板式、旋转式或热管回收。
空气与液体用大表面积固定芯体。
大风量用高效能量回收。
用于洁净场合的被动、完全分离气流。