RiffRaff Posted December 30, 2017 Share Posted December 30, 2017 Very weird this morning! All the conservatory windows are totally misted up...but on the outside! Totally opaque. Link to comment Share on other sites More sharing options...
peak4 Posted December 30, 2017 Share Posted December 30, 2017 Exactly the same over in Buxton. First time I've seen it here. Link to comment Share on other sites More sharing options...
RiffRaff Posted December 30, 2017 Author Share Posted December 30, 2017 Exactly the same over in Buxton. First time I've seen it here. Just found this, peak4... "Condensation is defined as the process by which a gas turns into a liquid. If the temperature of an object falls below what is known as the dew point temperature, then water vapour from the air will condense on the object’s surface. The dew point varies according the amount of water in the air (compare a shower room to a sitting room for example) and the temperature of the air. The warmer the air, the more water vapour it can hold – but it can only hold so much, so if this saturated air encounters a surface that is below the dew point temperature then it will condense. The reason water condenses on the outside surface of the glass is the temperature of the glass drops below the external dew point temperature. The new double or triple glazing units tend to have inner panes made up of low emissivity glass and this prevents the movement of heat across the glazing unit, so the outer pane never gets warm. Unfortunately, there is nothing that can be done to reduce this phenomenon occurring, however the good news is that it only occurs in very specific circumstances – a combination of high relative humidity and clear cold conditions normally experienced in Spring and Autumn." So now we know! Interesting, though...our windows are at least 15 years old, and it's neither spring or autumn! Link to comment Share on other sites More sharing options...
phil752 Posted December 30, 2017 Share Posted December 30, 2017 Just found this, peak4... "Condensation is defined as the process by which a gas turns into a liquid. If the temperature of an object falls below what is known as the dew point temperature, then water vapour from the air will condense on the object’s surface. The dew point varies according the amount of water in the air (compare a shower room to a sitting room for example) and the temperature of the air. The warmer the air, the more water vapour it can hold – but it can only hold so much, so if this saturated air encounters a surface that is below the dew point temperature then it will condense. The reason water condenses on the outside surface of the glass is the temperature of the glass drops below the external dew point temperature. The new double or triple glazing units tend to have inner panes made up of low emissivity glass and this prevents the movement of heat across the glazing unit, so the outer pane never gets warm. Unfortunately, there is nothing that can be done to reduce this phenomenon occurring, however the good news is that it only occurs in very specific circumstances – a combination of high relative humidity and clear cold conditions normally experienced in Spring and Autumn." So now we know! Interesting, though...our windows are at least 15 years old, and it's neither spring or autumn! yep, but unless the condensation is in between the pains dont worry about it Link to comment Share on other sites More sharing options...
RiffRaff Posted December 30, 2017 Author Share Posted December 30, 2017 yep, but unless the condensation is in between the pains dont worry about it I'm not! It was just a comment that I'd never seen condensation outside before! Link to comment Share on other sites More sharing options...
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