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Why does exhaled air saturated with water vapour?
water vapour is produce during respiration
Which one has high vapour pressure water or alcohol?
alcohol has high vapour pressure than water at room temperature.
What is Vapour absorption machine?
It is a refrigeration unit based on Vapour Absorption Refrigeration Cycle (typically refrigerants used are Water or Ammonia).
Why are clouds not evaporated if they are water vapour?
Clouds are made up of water droplets of varying size, or ice crystals, not water vapour. Water vapour is the evaporite of clouds, and clouds often dissipate, so the water droplets making up the cloud change from visible water droplets to invisible water vapour. The "vapour trails" from aircraft engine exhausts are actually areas of cloud formation as water from burnt fuel condenses in cold air aloft.
Is water vapour released through water vapour during transpiration?
Yes, water vapor is released through a process called transpiration.
How do you repair drywall hole and vapour barrier?
I tape the broken vapour barrier with red 'Tuck' tape then put a wood backing in the hole and use small pieces of drywall to patch.
Vapor barrier over studs and insulation and behind drywall or over drywall?
Vapour barrier is directly onto studs.
How do you vapour barrier cantilever floors?
30 pound roof felt before your finish material.
Can you jnstall drywall over roofing papersd wood walls with out condensation?
I always have a poly vapour barrier. Better for the drywall.
How do you install lighting in ceilings with insulation?
Assume you are asking about recessed lighting. There are units that have a can around where the bulb is located to keep insulation a safe distance from the heat generated by the bulb. Just cut away the insulation so the can will fit. Buy a fixture that has thermal protection and will cut off if the fixture gets too hot. Follow manufacturer's recommended installation procedures. <<>> Don't leave your ceiling vapour barrier with a break in it. At the place where you buy your fixtures ask for a vapour barrier plastic boot to go over the fixture to seal the existing barrier. The easiest method to install this boot is from the top side in the attic if possible. Make sure that you use vapour barrier adhesive tape to seal the existing barrier to the new fixture boot.
How do you insulate an electrical outlet?
If the outlet is on an outside wall there is a plastic boot that goesaround the outlet. The purpose of this boot is to keep the vapour barrier intact. The edges of this boot are then taped to the wall vapour barrier to make a complete air seal. The insulation goes behind the outlet boot which allows the wall R value to remain the same as the rest of the wall.
Do you need a damp course under a stud wall frame?
No It is not a mandatory requirement. Vapour barrier would probably be installed under the floor slab
What is Tuck Tape?
Tuck tape is (usually red) extrwemley adhesive tape usually used with plastic vapour barrier in high moisture situations.
How do you protect the loft insulation when fitting recessed lighting?
New recessed fixtures have what is called zero clearance. What this allows is for insulation to be installed adjacent too and over the fixture without a heat build up. There were cases with the old type fixtures that insulation was placed over the fixtures and it couldn't dissipate the heat from the lamps and the fixtures caught fire. The other thing that will have been done is to get a vapour barrier boot with the purchase of the fixture. What this does is provides a dome for the fixture to be installed into without sacrificing the vapour barrier envelope. This dome is caulked or tuck taped to the vapour barrier to make a airtight seal. This dome is also used with the zero clearance fixtures to make a complete airtight and insulated installation.
Can you smell the vapour in the room?
No. Vapour does not smell.
Which state is a vapour?
The state of vapour is gaseous.
What is moisture vapor proof film?
All polymers that are commonly manufactured as films allow diffusion of water vapour at surprisingly high rates - far too high for even short term storage of moisture-sensitive items. To improve moisture barrier properties they are often coated - often with a vinylidene chloride based polymer. The ultimate barrier coating for films is a metal though - usually aluminum applied as a vapour. Crisps/potato chips are not in metallised film bags for nothing, and it isn't primarily appearance.
