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Piping in walls may also be a source of mold, since they may leak (causing moisture and condensation). [ 10 ] Spores need three things to grow into mold: nutrients – cellulose (the cell wall of green plants) is a common food for indoor spores; moisture – to begin the decaying process caused by mold; and time – mold growth begins from 24 ...
Interstitial condensation is a type of condensation that may occur within an enclosed wall, roof or floor cavity structure, which can create dampening. When moisture-laden air at dew point temperature penetrates inside a cavity of the structure, it condenses into liquid water on that surface. The moisture laden air can penetrate into hidden ...
Condensation on a window during a rain shower. Condensation in building construction is an unwanted phenomenon as it may cause dampness, mold health issues, wood rot, corrosion, weakening of mortar and masonry walls, and energy penalties due to increased heat transfer. To alleviate these issues, the indoor air humidity needs to be lowered, or ...
Cold traps (C in the figure) usually consist of two parts: The bottom is a large, thick round tube with ground-glass joints (B in the figure), and the second is a cap (A in the figure), also with ground-glass connections. The length of the tube is usually selected so that, when assembled, the total reached is about half the length of the tube.
The wick type solar still is a vapour-tight glass-topped box with an angled roof. [7] Water is poured in from the top. It is heated by sunlight and evaporates. It condenses on the underside of the glass and runs into the connecting pipe at the bottom. Wicks separate the water into banks to increase surface area.
In architecture, a hood mould, hood, label mould (from Latin labia, lip), drip mould or dripstone [1] is an external moulded projection from a wall over an opening to throw off rainwater, historically often in form of a pediment.
Example of an image from a camera with fungus in the low pass filter glass. Lens from a wide-angle lens, completely overgrown with threads of fungus on the rear element. The fungi that attack surfaces belong to the groups of water mold and sac fungi (Ascomycota, especially the fungi imperfecti). "The lens fungus" is not a specific type of fungus.
Slumping glass is a highly technical operation that is subject to many variations, both controlled and uncontrolled. When an item is being slumped in a kiln, the mold over which it is being formed (which can be made of either ceramic, sand or metal) must be coated with a release agent that will stop the molten glass from sticking to the mold.