Basic Info.
Function
Exhaust, Velocity Control
Feature
Corrosion Resistance, Heat Resistant, Acid & Alkali Resistant, Fireproof, Explosion Proof
Product Name
Duct Fume Hood
Worktop Material
20+6 mm Ceramic
Liner Material
Ceramic Fiber Board
Face Velocity
0.4-0.6 M/S
Application
Environment/Institute/Biology Lab/Chemical Lab
Transport Package
Standard Export Wooden Case Packing
Specification
1800*1205*2400 MM
Product Description
Product Description
A typical bypass fume hood can be used on a constant volume system. This is due to an alternate path being created to allow air to enter the fume hood when the sash is closed. Automatic compensating bypass hoods can be manufactured with vertically rising sashes only. Certain types of fume hoods can't be made in an automatic compensating bypass configuration. Such cases include fume hoods that include horizontally sliding panels as well as double hung vertically rising sashes. While the velocity increase is more noticeable as the sash is closed, such hoods can be used successfully with a CAV exhaust system.
Product Parameters
| Model Specification | WJ-1500A | WJ-1500B | WJ-1800A | WJ-1800B |
| External dimensions of equipment(mm) | 1500(W)*1205 (D) *2400 (H) | 1800(W)*1205 (D) *2400 (H) |
| Dimension of works pace (mm) | 1260(W1)*780(D1) *1100 (H1) | 1560(W1)*780(D1) *1100 (H1) |
| Panel material | 20+6mm thick butterfly ceramics |
| Material of internal lining board | 5mm thick ceramic fiber board |
| Diversion structure | Lower air return |
| Control system | Button control panel (LCD panel) |
| PH value control | The medium is alkaline water solution; manual monitoring, and manual control through acid pump and alkali pump. |
| Input power | Three-phase five-wire 380V/50A |
| Current for air fan | Not over 2.8A(380V or 220V can be directly connected) |
| Maximum load of socket | 12 KW(total of 4 sockets) |
| Water tap | 1 set (remote control valve + water nozzle) | No | 1 set (remote control valve + water nozzle) | No |
| Water discharge way | Magnetic chemical pump strong discharge |
| Using environment | For non-explosion indoor use, within 0-40 degrees Celsius. |
| Applicable fields | Inorganic chemistry experiment; Food, medicine, electronics, environment, metallurgy, mining, etc. |
| Ways of Purification | Spray sodium hydroxide solution, no less than 8 cubic meters/hour | Spray sodium hydroxide solution.no less than 12 cubic meters/ hour |
| Ways of surface air speed control | Manual control (through the electric air valve to adjust the exhaust air volume or adjust the height of the moving door) |
| Average surface air speed | 0.6-0.8 m/s Exhaust air volume: 1420-1890m3/h (when door height h =500mm) | 0.6-0.8 m/s Exhaust air volume: 1760-2340m3/h (when door height h =500mm) |
| Speed deviation of surface air | Not higher than 10% |
| The average intensity of illumination | Not less than 700 Lux; Standard white and uv-free yellow LED lamps; The illumination is adjustable. |
| Noise | Within 55 decibels |
| Flow display | White smoke can pass through the exhaust outlet, no overflow. |
| Safety inspection | No spikes, edges; Charged body and the exposed metal resistance is greater than 2 mQ; Under 1500V voltage, no breakdown or flashover occurred for 1min test. |
| Resistance of exhaust cabinet | Less than 160 pa |
| Power consumption | Less than 1.0kw/h (excluding power consumption of fans and external instruments) | Less than 1.2kw/h (excluding power consumption of fans and external instruments) |
| Water consumption | Less than 3.2L/ h | Less than 4.0L/ h |
| Performance of wind compensation | With a unique wind compensation structure, the volume of the wind will not cause turbulence in exhaust cabinet and will not directly blow to the staff (need to connect to the air compensation system of the laboratory) |
| Air volume regulating valve | 315mm diameter flanged type anti-corrosion electric air flow regulating valve (electric contact actuator) |
More About the Fume Hood
A laboratory chemical fume hood is first and foremost a safety device. Users need to be able to rely on their fume hood as a primary containment device to protect them from the hazards within. It is connected to a remote exhaust system and provides operator protection by drawing air around the operator and into the hood chamber through the working opening.
When the sash is closed, the exhaust system continues to operate to maintain the working chamber and exhaust ducting at negative pressure and provide containment of fumes and vapors. Fume hoods are generally served by either constant air volume (CAV) or variable air volume (VAV) exhaust systems.
Lab fume hoods manufacturers generally offer a wide variety of models when it comes to fume hoods. You can choose one of their more popular models. Or you can opt to have a more customized lab fume hood to better suit your requirements. The choice of fume hood will largely be dictated by different factors. These include working conditions, space availability, and nature of experiments. It also includes the material of the hood and lastly the fume hood price.
Some of the most common models of chemical fume hoods offered by manufacturers include benchtop models. Others include thin-walled benchtop models, and walk-in fume hood models. You should also ensure that the manufacturer or supplier you have chosen is a certified and reliable one, supplying only high-quality products. Specials attributes like chemical and flame resistance should also be available for the fume hoods. A chemical fume hood is a long-term investment. Thus, like any other laboratory furniture, one should always ensure that they make a well-informed decision. This is done by knowing all the facts in advance.
Detailed Photos
Fume Hood Maintenance
• Hoods should be evaluated by the user before each use to ensure adequate face velocities and the absence of excessive turbulence.
• In case of exhaust system failure while using a hood, shut off all services and accessories and lower the sash completely. Leave the area immediately.• Fume hoods should be certified, at least annually, to ensure they are operating safely. Typical tests include face velocity measurements, smoke tests and tracer gas containment. Tracer gas containment tests are especially crucial, as studies have shown that face velocity is not a good predictor of fume hood leakage. • Laboratory fume hoods are one of the most important used and abused hazard control devices. We should understand that the combined use of safety glasses, protective gloves, laboratory smocks, good safety practices, and laboratory fume hoods are very important elements in protecting us from a potentially hazardous exposure.• Laboratory fume hoods only protect users when they are used properly and are working correctly. A fume hood is designed to protect the user and room occupants from exposure to vapors, aerosols, toxic materials, odorous, and other harmful substances. A secondary purpose is to serve as a protective shield when working with potentially explosive or highly reactive materials. This is accomplished by lowering the hood sash.FAQ
Why do fume hoods use so much energy?
It's the air being sucked through the fume hood, not the fume hood itself that consumes so much energy. For health and safety reasons, labs use 100% outside air which must be heated or cooled for comfort before it is brought into the lab. In addition to the energy required to condition the air, a significant amount of additional electricity is required to run large fans to move the air through the building and through the fume hoods.
How does shutting the sash save energy?
Most fume hoods at Stanford are variable air volume (VAV), meaning that the fume hoods are designed to vary the air flow based on how wide open the sash height is. Sash position is connected to the building's ventilation system so that a building's fan speed and the volume of air moved is reduced when the sash is lowered.
Is it safe to shut the sash?
The sash is an important safety barrier between the fume hood interior and the laboratory, protecting the lab user. Sashes should be opened only to set up or modify an experiment. At all other times, shutting the sash is safest. When the sash is shut there is still some air flow through the hood to remove any fumes.
How do I remind myself and my roommates to close the sash?
You can post a sticker, like the one shown in the picture below, to remind yourself and your lab mates to close the sash when not in use. The sticker also educates new fume hood users tha a lower sash is safer, and that the sash should only be open when setting up and modifying experiments.
What other fume hood practices can reduce my energy consumption?
• Never use a fume hood just for storing chemicals - they belong in a safety cabinet, which doesn't require huge volumes of air.
• If your fume hood has an occupancy switch, turn it off when not in use.
• If your group is no longer using a specific fume hood, consider having it locked and de-commissioned so air no longer flows through it.
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Company Introduction:
Chengdu Ample Import and Export Co., Ltd. is a professional solution-oriented supplier aiming to be one of the leading Exporter and Manufacturer of Laboratory furniture such as lab fume hoods, lab storage cabinets, and benches, Office chairs, with well-equipped testing facilities and strong technical force.
Our products are extensively used in many industry fields with a wide range, good quality, reasonable prices, and advanced designs.
One of the Ample factories specializes in laboratory protective products to meet the requirements of different kinds of laboratory experiments. We also supply customers with China′s Top-quality medical devices at the factory-direct price.
We both provide customized products and OEM service for our all products.
Our company tenet is Top in Quality, Best in Service.
Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.
We sincerely welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
