2019 Cav Vav Intelligent Ventilation System New Fume Hood

2019 CAV VAV Intelligent Ventilation System New Fume Hood
A fume hood is typically a large piece of equipment enclosing five sides of a work area, the bottom of which is most commonly located at a standing work height.Two main types exist, ducted and recirculating (ductless). The principle is the same for both types: air is drawn in from the front (open) side of the cabinet, and either expelled outside the building or made safe through filtration and fed back into the room. This is used to:*Protect the user from inhaling toxic gases (fume hoods, biosafety cabinets, glove boxes)
*Protect the product or experiment (biosafety cabinets, glove boxes)
*Protect the environment (recirculating fume hoods, certain biosafety cabinets, and any other type when fitted with appropriate filters in the exhaust airstream)
Worktop: Phenolic Resin or Other (Epoxy Resin, Ceramic etc)
Surfaces made of cost effective High Pressure Phenolic Resin composite are resistant to chemical stain and corrosion. Non-porous and non-conductive, it's strong durable qualities enable it to withstand high impact and shock. It is easily cleaned with soap and warm water.Worktop: Epoxy Resin
Because of the natural resistance to corrosion, the industry has found it superior to any other top material for laboratory work. It is resistant to most organic and inorganic chemicals and is non-toxic. In addition, it is resistant to mechanical and thermal shock.
Constant air volume principle
Conventional hood: This term is used to describe a constant air volume (CAV) hood, an older, traditinally less elaborate hood design used for general protection of the laboratory worker. Because the amount elaborate hood design used for general protection of the laboratory worker. Because the amount of exhausted air is constant, the face velocity of a CAV hood is inversely proportional to the sash height. That is, the lower the sash, the higher the face velocity. CAV hoods can be installed with or without a bypass provision which is an additional opening for air supply into the hood.Variable air volume vs. constant air volume?
• Constant volume is good for small applications, for dedicated exhaust, or for two to four units sharing an exhaust.
• Most hoods have "setup" time and "run" time, or are only used on a limited basis. While slightly more expensive to buy, that makes a two-speed exhaust more cost effective in use. Typically, low speed is 50% of high speed. Set the blower on high for setup, low for runtime, or for limited-use purposes.
• Hoods should be in close proximity to one another to save money on installing and maintaining the exhaust system.
• You can also plan for future hoods to be added to the system. But make sure future expansion is identified in the building plan, so that the whole building exhaust and supply can accommodate future needs. For example, you can buy a blower for a 4-hood system when you're only planning to install two hoods at first. Then just block off your "future" duct until you buy the additional hoods.TypeBenchtop fume hoodsExhaust systemCAV exhaust system (Constant air volume) or VAV exhaust systemExhaust fanInclined flow fanExhaust air rate1500-3500m3/hVentilation ductsPVC material, FPR, PP or otherPower(Single-phase) 220V/50HZ or (Three-phase) 380V/50HZAir valveManual or electricAverage wind speed0.3-0.6m/s adjustalbeNoise level< 60dB(A)TopsPhenolic resin (Other: Epoxy resin, Ceramic etc)Inner LinerHPL physiochemical board, Phenolic resin, Ceramic
Cabinet
1.0mm thick cold-rolled steel with 75μm epoxy resin powder coating (or phenolic resin plate)
Size
W1200/1500/1800*2100*D960*H2400/2600/2800mm
Visual windows
Transparent tempered glass, explosion-proof (manual)Opening height0-500 mm (Intelligent automatic lifting)
Control panel
Touch, intelligent control panelGross weight280-400 kgMotor power0.5-1.1KWLuminance>300LXLab accessoriesPegboard, sink, faucet, gas fitting, sockets, lab stools etc