{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lec7 - Protection against humidity Moisture penetration...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Protection against humidity ± Moisture penetration bulk moisture capillary action air leakage vapor diffusion
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Protection against humidity ± Condensation from humid air infiltration sources of water vapor and typical humidity production [g/h]: ­ Resting person 30 to 50 ­ Active person 200 to 300 ­ Cooking water 100 to 200 ­ Bath 2000 ­ Shower 2400 ­ Apartment plant 10 ­ Washing machine (laundry) 50 to 200 ­ Dryer (laundry) 500 Total for apartment 400 to 1600 i.e. 7 to 11 kg/day
Background image of page 2
Protection against humidity ± Condensation from humid air infiltration reaching of dew-point °T - assess condensation risk higher if thermal bridges or poor ventilation Temperature Vapor pressure p sat p vap Dew-point Dew point 0 10 20 30 40 50 o C 30 25 20 15 10 5 g/kg 0 17.5 o C Image by MIT OCW.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Protection against humidity ± Condensation from humid air infiltration reaching of dew-point °T - assess condensat i on risk - calculate amount of condensed water - account for evaporation (summer) Air flow rate Interior humidity Surface humidity Surface temperature
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}