一般冷轧钢板：价格便宜、易腐蚀 ，一般通风用送风、回风、新风、排风、排烟系统。镀锌钢板： 耐腐蚀性比较刚办妥，但在加工过程中铁皮 对温湿度要求较高场合的送回风系统，超净系统中效过滤，易掉落，油漆不易附着 器前和中效至高效过滤器之间的送风系统。铝合金板：不起尘、价格贵， 30级净化系统高效过滤器之后送风系统。
General cold-rolled steel plate: cheap, easy to corrode, general ventilation with air supply, return air, fresh air, exhaust air, smoke exhaust system. Galvanized steel sheet: Corrosion resistance is relatively just completed, but in the process of processing iron sheet for high temperature and humidity requirements occasions of air supply and return system, ultra-clean system effective filtration, easy to fall, paint is not easy to attach to the pre-and medium-to high-efficiency filter air supply system. Aluminum alloy sheet: Dust-free, expensive, 30-level purification system after high-efficiency filter air supply system.
Hard polychloride Yixi board: Nanjing ventilation pipe surface lubrication, dust-free, corrosion-resistant, expensive, easy to aging, high-efficiency filter rear air supply pipe, surface treatment workshop exhaust system.
For more complex civil buildings, in the design stage, each type of work (HVAC, water supply and drainage, power supply and lighting and architecture) should first negotiate space separation and determine the elevation scale of each kind of pipeline. Normally, they should not go beyond the boundaries prescribed by themselves. If there is a single pipe section to cross the boundary, it should be negotiated with other projects. The principle of solving the collision and harmony of various ventilation pipes is generally as follows: "Small pipes let big pipes, pressure let no pressure". For example, when a water pipe collides with an air pipe, the water pipe should turn. When the cold and hot water pipes collide with the sewer pipes, the cold and hot water pipes should be changed. Before the construction, the Engineer in charge of the equipment shall draw the pipelines of each type of work on a single plan. Each pipe uses a colour pen. Summarize the elevation at each intersection to see if there is any contradiction, find out in time, and solve the problem before the device. In order to reduce investment, save space and lower floor height, some pipes without inclination requirements can be laid through beams (such as tap water pipes, fire spraying trunk pipes, etc.).
Now more and more families use central air conditioning, but central air conditioning is not a device after 100, we also need to clean the air duct on time, especially the transmission effect of the central air conditioning air duct assumption is not often handled, will bring a lot of trouble to the day。 Below Jingle Enterprise uniform small knitting let us know what damage does not clean the central air conditioning duct bring。
1. It is inevitable to breed Xijun and convey disease if the dust passage of wind 0 is not often cleaned. Why? In fact, this is because the air duct through the outlet, return air outlet and indoor constitute a relatively closed space, the dust Egyptian bacteria in the air duct will follow the air conditioning wind to every corner of the room, and gradually become the source of indoor air pollution; together with the bacteria in one room also briefly follow the air conditioning circulating wind to other rooms to constitute cross infection.
2。 The effect of air replacement is getting worse, which we can also understand。 Often in the use of central air conditioning environment, in order to adhere to the refrigeration effect, we will do a closed, semi-closed operation of the environment, so that indoor air circulation, air cleanliness will rely on the air conditioning itself filtering and punctual delivery of a small amount of fresh air to maintain, so the indoor air is relatively dirty。
3. Refrigeration becomes worse due to the blockage of air duct by dirt. We are bound to increase the wind power, so in the process of operation will make the power loss greater. With the air flowing in the duct, the friction in the duct that needs to be defeated will also increase, which requires more energy to defeat the resistance.