Renson and Dampers Natural Ventilation Dampers are used

Renson and Dampers

Natural Ventilation Dampers are used to control airflow from one space to the other. Often referred to as ventilators. Used for moving air from one space to another; normally outside to in. Normally will need a weather resistance when closed. Material can be aluminium or steel. Requirement is physical performance No real market leader

Façade Dampers Similar to natural ventilation dampers but they provide both a weather and thermal resistance. Primarily used in natural ventilation schemes Damper solutions have been twin insulated metal with a U value, air leakage and weathering. – Typical U values of 2 w/m 2 K – Air tightness of between 5 and 10 m 3/hr/m 2 at 50 Pa – Louvre water tightness class A as per HEVAC at 0 m/s velocity Often the casing is non thermally broken metal HVC solution is a pure u. PVC assembly to replace the insulated metal blade. – Typical U values of around 1 but it needs verifying – Airtightness of around 10. However usually quoted per m of blade and is <1 – Louvre water tightness to suit louvre used

Renson Solutions – HVC Damper

Renson Natural Ventilation Solution

Optional extras Class A louvre Internal grille Motor operation – electric, pneumatic, manual Acoustic modules – – Silencers Acoustic louvres Tubular fins (Gilberts) Passivent duct vent Heating – Tubular fin heating – Electric heater batteries Fan assisted – Monodraught turrets PV powered