Laboratories exhaust enormous volumes of conditioned air through fume hoods, often around the clock. Recovering the energy in that exhaust before it leaves the building is one of the fastest-payback upgrades in laboratory HVAC — and the choice between a rotary wheel and a plate exchanger decides how much you actually save.
Why labs bleed energy
Most fume hoods run on 100% outdoor air. A single variable-air-volume hood can move 300–1,200 m³/h, and a typical lab runs dozens of them. Every cubic metre is heated or cooled, then dumped outside. The make-up air system must condition an equal volume to replace it — that is the real cost.
- 定风量： 排风柜以固定风量排风，与窗扇位置无关。
- 变风量（VAV）： 风量跟随窗扇，但峰值需求仍然很高。
- 补风： all of it must be tempered to ~21 °C and 50% RH before entering the space.
Rotary wheel vs plate for fume-hood make-up air
两者都从泄压气流中回收热量并返还给引入的室外空气。它们的区别在于回收的对象以及隔离两股气流的方式。
| 因素 | 旋转式全热轮 | 空气-空气板式 |
|---|---|---|
| 回收类型 | 全热（温度＋湿度） | 仅显热 |
| 典型效率 | 70–85% | 60–75% |
| 运动部件 | 有（慢速旋转、purge 扇区） | 无 |
| 气流隔离 | 搭配 purge 且排风至室外支管时良好 | 优秀（独立板片） |
| 最佳适配 | 潮湿气候、严格的能效规范 | 严格隔离、低维护 |
对于大多数实验室， 带 purge 扇区的全热轮 可同时回收温度和湿度，这在室外夏季潮湿的地区尤为重要。一种 板式换热器 当规范要求排风与送风之间尽可能洁净的分离时更为可取。
Integrating with make-up air
- 将回收芯体布置在 AHU 的室外空气与泄压路径上。
- 让楼宇管理系统调节旁通与防霜保护。
- 使用我们的 板式换热器选型指南 作为起点。
正在为实验室装修项目指定回收？
EN159 builds plate, rotary, heat-pipe and counterflow air-to-air exchangers for new and retrofit laboratory make-up air systems. Send us airflow (m³/h), inlet temperatures and available footprint and we will size it.
Related reading
常见问题
Why recover energy from fume hood exhaust?
Labs run hoods on 100 percent outdoor air around the clock, so every cubic metre conditioned and then dumped carries a large heating or cooling cost. Recovery captures that energy in the make-up air.
Rotary wheel or plate exchanger for labs?
Rotary wheels give higher effectiveness for large volumes but carry a little exhaust into supply air; plates keep the streams fully separate, which many lab specs prefer for safety, at slightly lower effectiveness.
How much air do fume hoods move?
A single variable-air-volume hood can move several hundred to over a thousand cubic metres per hour, and a typical lab runs many of them, which is why recovery payback is fast.
What about contamination risk?
Where toxic or hazardous exhaust cannot be allowed into supply air, a plate exchanger or a run-around coil keeps the streams separate while still recovering heat.
常见问题
Why recover energy from fume hood exhaust?
Labs run hoods on 100 percent outdoor air around the clock, so every cubic metre conditioned and then dumped carries a large heating or cooling cost. Recovery captures that energy in the make-up air.
Rotary wheel or plate exchanger for labs?
Rotary wheels give higher effectiveness for large volumes but carry a little exhaust into supply air; plates keep the streams fully separate, which many lab specs prefer for safety, at slightly lower effectiveness.
How much air do fume hoods move?
A single variable-air-volume hood can move several hundred to over a thousand cubic metres per hour, and a typical lab runs many of them, which is why recovery payback is fast.
What about contamination risk?
Where toxic or hazardous exhaust cannot be allowed into supply air, a plate exchanger or a run-around coil keeps the streams separate while still recovering heat.
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。