Mitsubishi Electric Lossnay series Technical Manual page 34

(4) Ventilation Load and Energy Recovery
Ventilation load without
Lossnay (q )
1
Ventilation load with
Lossnay (q )
2
Energy recovery (q )
3
Ventilation load (%)
(5) Recovered Money (Power Rates)
Cost savings
(dollar)
Heating
= Air specific gravity × ventilation volume
× (indoor enthalpy – outdoor air enthalpy)
=
= Ventilation load (q )
1
× ( 1 – enthalpy recovery efficiency)
=
or
= Air specific gravity × ventilation volume
× (indoor enthalpy – indoor blow enthalpy)
= q – q
1 2
= –
=
or
Ventilation load (q )
=
1
× enthalpy recovery efficiency
•
Ventilation load = W =
•
Ventilation load with Lossnay
= W =
•
Energy recovered = W =
Heating
= Energy recovered: kW × Unit price $/kWh ×
operation time Hr/year = kW ×
= Hr/year
=
•
CHAPTER 3 General Technical Considerations
= Air specific gravity × ventilation volume
× (outdoor air enthalpy – indoor enthalpy)
=
= Ventilation load (q
× ( 1 – enthalpy recovery efficiency)
=
or
= Air specific gravity × ventilation volume
× (indoor blow enthalpy – indoor enthalpy)
= q – q
1
=
=
or
Ventilation load (q
=
× enthalpy recovery efficiency
•
% Ventilation load =
•
ventilation load with Lossnay
% =
•
% Energy recovered =
= Energy recovered: kW × Unit price $/kWh ×
$/kWh × operation time Hr/year =
= Hr/year
=
Cooling
)
1
2
–
)
1
W =
W =
W =
Cooling
kW × $/kWh ×
%
%
%
U-25