Improve HVAC System Efficiency
Increase Cooling Efficiency- ARI Guideline V provides a method for calculating the combined system efficiency of an Airxchangewheel with standard DX equipment. For a copy of the ARI Guideline V Click here
- Per Guideline V calculations, a typical Airxchange wheel 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 wheels provide up to 4 tons of cooling per 1000 cfm of outdoor air
Increase Heating Efficiency- The wheel has similar impact on the heating system reducing outdoor air heating costs by 70-80%
- Airxchange wheels provide up to 90 mbh of heating per 1000 cfm of outdoor air
Example:
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.
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