Do the fire metal pipes in the ceiling be made to prevent condensation?

The fire-fighting metal pipes in the ceiling do not need to be anti-condensation, and the water supply pipes of the fire-fighting system do not need to be insulated, because the water in the pipes basically does not flow, and the temperature difference between the pipes and the air is very small.

Anti-condensation: A coating that prevents water droplets from condensing on the surface of an object. Since there are two types of objects, transparent and opaque, anti-condensation coatings are also divided into two categories.

1) Transparent material anti-condensation coating, often known as anti-fog coating or anti-blur coating. At high temperatures, tiny dewdrops (water droplets) condense on the surface of glass or transparent plastic, and the surface of the transparent material becomes blurred. To prevent this from happening, anti-fog paints are often used.

Anti-fog coatings can often be composed of three parts, namely hydrophilic polymer, cross-linking agent and surfactant, of which the main body is hydrophilic polymer, which absorbs moisture; In order to enhance the resin is water resistance and friction resistance, crosslinkers are introduced; Surfactants are added to improve surface wettability and anti-fogging. (2) Anti-condensation coatings for non-transparent materials (such as reinforced concrete, cement, wood, plastic, etc.). The composition and types are:

Latex (made of latex liquid, dispersants, antifungal agents, diatomaceous earth and vermiculite, etc.), solvent-based (made of synthetic resins such as alkyd, solvents, antifungal agents, diatomaceous earth and leeches) and two-component polyurethane foam coatings. After film formation, it is a porous coating, which has good air permeability and excellent anti-condensation performance, and is suitable for places with high temporary humidity.

1. The metal pipe and the water flow in the pipe need to be insulated and prevent condensation.

2. The water flow in the metal pipe is almost immovable, such as the fire water pipe, there is no need to do anti-condensation, if the setting part is the air conditioning outlet and return air channel, it is recommended to do anti-condensation treatment.

3. Plastic pipes, if the wall thickness of the pipe is sufficient, and the water flow rate is not particularly large, because of its own small thermal conductivity, it can also be treated without condensation, such as UPVC drainage pipe and PP-R condensate pipe.

The water in the fire pipe is generally not flowing, so the temperature of the water is the same as the room temperature and there is no condensation. No condensation, of course, no need to do anti-condensation. The code also does not require condensation prevention.

However, if the room temperature is lower than 0 degrees, you should consider keeping warm to prevent the water pipe from freezing and cracking in winter.

1. If it is buried in the wall or floor slab, there is no need to prevent condensation; If it is surface-mounted, the hot water pipe and drainage pipe do not need to be made to prevent condensation, and the water supply pipe is necessary to do anti-condensation.

2. Anti-condensation occurs when the temperature difference between the transmission medium in the pipe and the surrounding environment is large, the specific heat coefficient of the pipe material is low, and condensation droplets (droplets) may occur on the outer wall of the pipe. When the water droplets generated during condensation drip onto the indoor ceiling or floor, damage the ceiling or affect the normal use of the toilet floor, the water supply pipe installed in the ceiling must be treated with anti-condensation, and no matter whether it is a heated or unheated room, as long as the pipe passes through these rooms and there is a possibility of condensation, it is necessary to do anti-condensation treatment.

In addition to the spray pre-action system, it is used to prevent condensation.

It should be done, otherwise it will condensate. Condensate dripping can be a safety hazard and cause damage to building fit-outs.

You can go to the "waterproof portal" to check the above information is very complete!!

No, you don't need to build a normal KBG.