Publish Time: 2021-11-22 Origin: Site
After decades of development, ductless fume hoods and filter workbenches have benefited countless laboratory workers around the world, while making laboratory design more in line with the green concept and more flexible. The improvement of monitoring technology has greatly expanded the application of filter fume hoods, thereby improving the overall advantages of the laboratory in terms of cost saving and environmental protection.
At present, people still have misunderstandings and prejudices about the filtered ductless ventilation technology. In order for this technology to function in more laboratories, the company plans to restore the original face of the ductless fume hood through a series of in-depth analysis articles. , To dispel the concerns of our customers. As the general outline of this series, this article briefly summarizes the core advantages of ductless ventilation technology in four aspects.
Because the ductless fume hood does not need to be installed, the operating cost is actually reduced compared to the traditional laboratory fume hood. Before shipment, each of our ductless fume hood has been carefully calibrated and tested for performance certification, plug-and-play. Traditional fume hoods require the installation of fans, ventilation ducts through the building and other auxiliary equipment, as well as on-site installation of fume hood components, all of which cost a lot of money and time.
Ductless ventilation equipment does not need to invest in cooling and HVAC like traditional fume hoods, because there is no need to pump indoor heating or cooling to the outdoor environment. The only cost the customer spends each year is on the filter. The annual cost is between USD 500-USD1000, which is much lower than the installation cost of a full-row fume hood with pipes.
Ductless fume hoods that have nothing to do with the HVAC system can be moved to other locations within a few minutes and work immediately, while traditional fume hoods may need to be shut down for several weeks to complete. Except for the power plug, the ductless fume hood does not have any external connection to hinder the replacement position, and it can also be placed on the instrument cart to move in different rooms. Traditional fume hoods require third-party engineers to remove the exhaust pipe and other connections before moving the machine.
The tubeless filter system removes chemicals while circulating the existing air in the room. When the ductless fume hood is working, no harmful fumes or vapors are released into the environment. The bonded activated carbon filter can be safely disposed of by landfill after the adsorption is saturated.
Advanced monitoring and safety control technologies have made ductless fume hoods and filter workbenches accepted by more and more laboratory applications. The continuous monitoring of the face wind speed and the filtration system is very important to the safety of laboratory personnel!
1) The automatic safety controller continuously monitors the airflow and filter to ensure the safety of the operator;
2) Real-time gas sensing technology ensures the protection of operators from exposure to toxic chemical fumes and vapors;
3) The alarm signal is easy to hear and see, reminding the user that the filter is saturated;
4) The alarm points are set in accordance with the latest occupational health standards for the limit values of known chemicals;
5) The airflow sensor continuously reads the surface wind speed and displays it to the user in meters per second (m/s) on the display;
6) The thickness of the bonded activated carbon filter is 7.6mm, and the carbon particles are evenly distributed in the whole filter;
7) The universal activated carbon filter can absorb almost all chemicals with a certain percentage;
8) For chemicals that cannot be adsorbed well, use chemical wetting agents to change the target chemicals.
A comprehensive and in-depth analysis of the safety of ductless fume hoods will be discussed separately in another chapter.