Design and installation of accessories such as tuyere air ducts for clean room air conditioning systems
Design and installation of accessories such as tuyere air ducts for clean room air conditioning systems
The setting of the fresh air outlet of the clean room will directly affect the load of the system air treatment equipment and the life of the filter, so it must be paid attention to; the fresh air outlet of the purification air conditioning system should be set in a place where the outdoor air is relatively clean, choose a place with dusty The concentration is high and...
Text label: clean room design, clean room engineering, design and installation of tuyere and air duct accessories
Design and installation of accessories such as tuyere air duct for clean clean room modular air conditioning system
The setting of the fresh air outlet of the clean room will directly affect the load of the system air treatment equipment and the life of the filter, so it must be paid attention to; the fresh air outlet of the purification air conditioning system should be set in a place where the outdoor air is relatively clean, choose a place with dusty In places where the concentration is large and does not change much, in order to avoid the influence of the dust concentration in the air on the ground, the fresh air outlet should generally be set at a height of 5m-15m from the ground, and at least at a height of 3m-4m. The air-conditioning system is high. If the fresh air is installed on the roof, it should be more than 1m higher than the roof to avoid the influence of the roof dust; On the windward side of the pollution source, if there is an air outlet near the fresh air outlet, try to set it on the windward side of the air outlet and lower than the air outlet. Generally, the air outlet is at least 2m higher than the fresh air outlet.
In order to ensure that the purification air-conditioning system can reduce the pollution of outdoor pollutants to the system when the system stops running, it is required to set up a closed valve at the fresh air place to interlock the air supply fan with the fresh air closed valve, or directly add a certain airtight valve on the fresh air outlet. The filter material layer of resistance is used to prevent outdoor pollutants such as flying insects and dust from entering the system. The net air circulation area of u200bu200bthe fresh air outlet should be determined according to the fresh air volume and wind speed. The air speed of the fresh air outlet is generally 2-5m/s; In order to ensure that the system enters a certain amount of fresh air, it is necessary to discharge a part of the indoor air, but most of them need to set up a local exhaust device to meet the requirements of the production process; in order to prevent the system from polluting the system during the shutdown period , to prevent the backflow of outdoor air. Generally, check valves, airtight valves, damping layers and water bath sealing pools are often installed on the air outlet. The flow rate of the air outlet should not be less than 1.5m/s, but it should not be too large. The net air circulation area should be determined according to the wind speed. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean projects.
Air duct is an important part of purifying air conditioning system, it is mainly used to transport air and make it flow according to the prescribed design route; the material of air duct includes cold-rolled thin steel plate, galvanized steel plate, plastic composite steel plate, stainless steel plate Plastic composite steel plates and hard plastic plates, etc., according to different requirements and production sizes, the thickness of the steel plate can be 0.5mm-1.5mm, and the thickness of the plastic plate is generally 3mm-8mm; the resistance of the purification air-conditioning system is one larger than that of the general air-conditioning system. In addition, the leakage of the negative pressure section of the air duct is usually several times larger than that of the positive pressure section, so the air duct tightness of the air-conditioning system is particularly important; It will cause the imbalance of the system air, destroy the pressure distribution of the original design of the system, make it difficult to adjust and control the indoor temperature and humidity parameters, and at the same time, it will also accumulate dust at the leak and cause the secondary flying of pollutants. The dust-free control of the air duct is mainly considered from the material and structure of the air duct. Generally, the air duct of the purification air-conditioning system does not use dust-producing materials. When the steel air duct with anti-corrosion paint cannot meet the purification requirements, it must be used. Made of rigid PVC plastic sheet.
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