ERVRatio

Brief Description

Erv ratio of at least 50%

Detailed Description

Energy recovery systems required by this section shall result in an enthalpy recovery ratio of at least 50%. a 50% enthalpy recovery ratio shall mean a change in the enthalpy of the outdoor air supply equal to 50% of the difference between the outdoor air and entering exhaust air enthalpies at design conditions.

Index Description

Section 6.5.6.1 in 90.1-2016

Datapoints Description

enthalpy_air_outdoor: Outdoor air enthalpy

enthalpy_air_return: Return air enthalpy

enthalpy_air_outdoor_erv: Outdoor air enthalpy after ERV

Assertions Description

(enthalpy_air_outdoor_erv - enthalpy_air_outdoor)/(enthalpy_air_return - enthalpy_air_outdoor) >= 50% happens at least once in winter design day

Type Verification Description

Procedure-based

Assertions Type

Pass