Why dual purpose?
- Is your current project an apartment block?
- Are your corridors landlocked?
- Is the building well sealed and insulated? (of course it is)
And most importantly:
- Do you have hot water pipes running above the corridor ceilings?
If you’ve answered yes to all four questions you need a dual purpose system.
Getting the balance right
If simple ventilation is not enough, then cooling using a dual purpose system is now possible with the new Colt Coolshaft. It uses evaporative cooling technology to provide active pre-cooling of the incoming air and, if there is a fire, it is able to ventilate the common area effectively to allow the smoke to escape. With low running costs and the ability to cool corridors below external ambient, Coolshaft just might be the answer to your prayers.
If you wish to know more about evaporative cooling and CoolShaft for residential buildings, you can visit our product page, where you will also find the results of a recent CFD model we made of conditions in the corridor of a residential building with no ventilation, with natural ventilation, and with CoolShaft.
Learn more about designing a dual purpose shaft system in our recorded webinar, which is available here.
If you missed my previous articles in this series, you can find them here:
- The builder’s work shaft
- Natural or mechanical?
- On the roof
- What type of shaft vent?
- Extended travel distance
Paul Compton is Technical Director for Colt, experienced in smoke control, HVAC, solar shading and louvre systems.