How do you ventilate an underground room?
How do you ventilate an underground room? Ventilation can be applied to an underground room using an electric fan blowing air in from outside (Figure 3). The effectiveness will be increased if entrances into the underground room are sealed. What is the required ventilation rate? A healthy ventilation rate is 0.35–0.5 ach. In other words, one third to one half of the volume of air in a house is replaced each hour. Lower than this risks not removing contaminants properly, while higher ventilation rates may require more active space heating. What are the requirements for ventilation? From the view point...