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
|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%)|
|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.