Increase Cooling Efficiency
- AHRI Guideline V provides a method for calculating the combined system efficiency of an Airxchange® energy recovery component with standard direct expansion (DX) equipment
- Per Guideline V calculations, a typical Airxchange® energy recovery component preconditions outdoor air at efficiencies equivalent to 60 EER leading to 40% system efficiency improvement
- Generally equivalent performance is available for air handling systems
- Airxchange® energy recovery components provides up to 4 tons of cooling per 1000 cfm of outdoor air
Increase Heating Efficiency
- Energy recovery ventilation components have a similar impact on the heating system reducing outdoor air heating costs by 70-80%
- Airxchange® energy recovery component provides up to 90 mbh of heating per 1000 cfm of outdoor air
Example:
| DX System | DX / ERV System | |
| DX Cooling Capacity | 20 Tons | 15 Tons |
| ERV Cooling Capacity | 0 Tons | 6 Tons |
| Total Cooling Capacity | 20 Tons | 21 Tons |
| ERV Heating Capacity | 0 mbh | 160 mbh |
| Outdoor Air | 2000 CFM (25%) | 2000 CFM (33%) |
| EER | 10 | 13.3 |
| Peak Demand (kW) | 24 | 18 |
| Typical ERV Operating Savings | – | $2000 – $5000 |
Above example assumes 95DB / 78WB outdoor air conditions for cooling calculations.
Heating calculations assume -16DB / -17WB outdoor air conditions.
Savings calculation assume utility rates of $.08 kWh and $1/therm.