Page 9 - Energy Recovery Ventilation

Advantages of Installing Shinwoo Air Conditioning Heat Recovery Ventilation Units
Energy Recovery and Energy Saving Effects

In conventional ventilation, when the contaminated indoor air is discharged, indoor heating and cooling energy are also
discharged, resulting in the need to consume energy again during re-heating or re-cooling after ventilation.
The heat recovery ventilation unit is a ventilation system that provides comfortable ventilation and excellent energy
savings by recovering indoor cooling and heating energy that is discarded during general ventilation and supplying it with
fresh air to the indoor space.

General Natural Ventilation

Outdoor General natural ventilation involves opening windows or using an exhaust fan, which causes significant heat
Temperature loss during ventilation.
(winter)
-10°C
Indoor
Temperature Indoor Air
22°C 22°C
Required Heat Energy for General Natural Ventilation (Q)
0.29 (188 m2 × 3 m × 0.5 times/hr) · {22°C - (-10°C)}
Area 188 m2, Outdoor Air
Floor Height 3 m = 2,616 kcal/hr
-10°C

Heat Recovery Ventilation Unit Ventilation

Outdoor Using a heat recovery ventilation unit directly exchanges polluted air with fresh outdoor air
Temperature while maintaining indoor temperature and humidity.
(winter)
-10°C
Indoor Indoor Side Outdoor Side
Temperature
22°C 8°C
Heat Required for Heat Recovery Ventilation (Q)
0.29 (188 m2 × 3 m × 0.5 times/hr) · {22°C - (-10°C)}
Area 188 m2, = 1,027 kcal/hr
Floor Height 3 m Indoor Air Outdoor Air
22°C -10°C

Energy Saving Effect of the Heat Recovery Ventilation Unit

Indoor Side Outdoor Side Outdoor Side Exhaust Air
Indoor Side Supply Air (Contaminated Indoor Air)
Supply Air Exhaust Air (Fresh Cooling/Hea�ng Air)

Outdoor Side
Intake Air
Indoor Air Outdoor Air (Fresh Air)
Indoor Side Intake Air
(Contaminated Cooling/Hea�ng Air)
Pre-filter An�bacterial Filter Pre-filter

Heat Exchanger Energy Saving Effect of the Heat Exchanger System

09 ENERGY RECOVERY VENTILATION