Table of Contents
- Laboratories are energy hogs - fume hoods run at high face velocities and dump conditioned air outdoors continuously. A lab can use 5-10x the energy per square meter of a typical office. Recovering that exhaust energy is one of the fastest paybacks available. Fume hood exhaust may carry chemical vapors, so supply and exhaust must never mix. That makes fixed-plate air-to-air heat exchangers the safe default - streams are physically isolated.
- Most lab exhaust is warm and dry (sensible-dominated), so sensible plate recovery already captures the bulk of the available energy. In humid climates, an enthalpic core helps, but only with a chemical-compatible membrane.
- Install the exchanger in the central exhaust riser or at the AHU. For hoods scattered across floors, a run-around coil loop can gather energy from multiple risers into one supply stream.
- Keep pressure drop low - hood face velocity is safety-critical, not a comfort setting. Size to winter design; summer cooling recovery is a bonus. Coordinate with cleanroom-style separation rules where labs share stringent air-quality needs.
- Well-designed lab recovery typically cuts HVAC energy 30-50%, directly lowering both operating cost and carbon footprint.
Laboratories are energy hogs - fume hoods run at high face velocities and dump conditioned air outdoors continuously. A lab can use 5-10x the energy per square meter of a typical office. Recovering that exhaust energy is one of the fastest paybacks available.
Fume hood exhaust may carry chemical vapors, so supply and exhaust must never mix. That makes fixed-plate air-to-air heat exchangers the safe default - streams are physically isolated.
Most lab exhaust is warm and dry (sensible-dominated), so sensible plate recovery already captures the bulk of the available energy. In humid climates, an enthalpic core helps, but only with a chemical-compatible membrane.
Install the exchanger in the central exhaust riser or at the AHU. For hoods scattered across floors, a run-around coil loop can gather energy from multiple risers into one supply stream.
- Keep pressure drop low - hood face velocity is safety-critical, not a comfort setting.
- Size to winter design; summer cooling recovery is a bonus.
- Coordinate with cleanroom-style separation rules where labs share stringent air-quality needs.
Well-designed lab recovery typically cuts HVAC energy 30-50%, directly lowering both operating cost and carbon footprint.