2007-05-10
Dealing with air quality and humidity levels in buildings is not confined to older properties. Modern building methods mean that controlled ventilation is no longer a luxury – it is a prerequisite.
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| Xcell 150 Hideaway heat recovery |
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Everyone of us exhales 10 to 75 litres of Co2 and up to 175 grams of water per hour. Put another way a family of four produces 10-15 litres of water vapour a day through breathing washing, showering and cooking.
The ability of air to absorb this vapour is dependent on temperature - the warmer the air, the more it can absorb. Extract ventilation can remove water vapour at source. And insulation eliminates cold surfaces on which condensation can form resulting in mould growth.
Traditionally homes were built with less regard to air tightness and had a high level of background air leakage. Whilst expensive to heat, high humidity was to a great extent diluted by ‘drafts’.
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Source: Applied Energy Products - Xpelair |
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