With the cost of heating and air conditioning rising every year it makes sense to at least investigate whether a ductless/filtered chemical fume hood is a good solution for your application. There are tremendous operating cost savings over a traditional ducted fume hood and payback can be faster than earth’s orbit around the sun. But that is not the only benefit of ductless/filtered fume hoods.
So you have heard of some challenges with ductless fume hoods and are hesitant to put your foot in the water. Let us assure you that we had the same concerns, but given a clearer understanding of when a ductless/filtered fume hoods is the correct solution for an application as well as major improvement in filter and monitoring technology, ductless/filtered fume hoods are here to stay and will most likely unseat ducted fume hoods as the number one fume hood solution in the foreseeable future. As a matter of fact, in Europe the ductless or filtered chemical fume hood accounts for a majority of the fume hood installations there.
What is the purpose of fume hoods? As most scientists, researchers and safety officers know, fume hoods protect users and bystanders against exposure to toxic gases emitted from chemical experiments. However, ductless/filtered fume hoods protect the users and bystanders in a different way than ducted fume hoods. Plus, ductless fume hoods can actually be safer than ducted fume hoods. Why you ask, because on most ducted fume hoods, exhaust fumes are not scrubbed (neutralized) before exiting the exhaust system. The solution with ducted fume hoods is dilution – meaning, the atmosphere above and around the lab buildings will dilute the toxic fumes that are carried through the exhaust system, which typically terminates on the building roof. The hope is that the exhausted air is jettisoned high enough that the cross winds carry off the fumes and dilute them in the surrounding air. However, with ductless fume hoods the fumes and particulates are trapped and neutralized thereby protecting the user, bystanders and the environment. Plus, many ductless/filtered fume hoods will not only clean-up the fumes and particulates created inside the fume hoods, they will also monitor and help clean up the ambient lab air.
Interested in Going Green? Not only are ductless/filtered fume hoods safe, they also are a very Green solution since they drastically reduce the energy consumption of the HVAC system. The organization saves while protecting the environment as well as reducing the carbon footprint of the lab building. Safety, Saving Energy, Reducing Costs & Saving the Environment – What more could you ask for?
Tired of the long Downtime retrofitting ducted fume hoods into an existing facility? Infrastructure and Installation Downtime has been drastically reduced since there is no complicated and expensive exhaust system connected to the fume hoods, plus the HVAC system can be significantly downsized. Many installations are done in one day. Moreover, building operations and maintenance staff will not have to be experts in VAV technology and procedures since most of the VAV controls and dampers can be eliminated with ductless/filtered technology. Plus, by eliminating or drastically reducing an expensive HVAC system, there is less HVAC equipment to break down, consequently less building operations and maintenance staff are required.
Traditionally, the term ductless fume hood meant a fume hood with a specific type of filter to trap and contain certain types of chemical fumes and particulates. Those traditional ductless fume hoods are still available, though their application is limited. However, in the last 10+ years new filtration technology has radically improved the filters ability to trap and neutralize almost every known chemical in one universal filter. Plus, it has increased the capacity and bond of each filter. Moreover, new electronic monitoring technology has vastly improved the ability of chemical filtration fume hoods to safely monitor chemical saturation and filter replacement. Lastly, since the chemical fumes and particulates are bonded to and neutralized by the filters they are technically safe to discard, however as an added precaution we recommend incineration which converts the carbon filer into carbon dioxide.
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Whether, your application is very narrow or very broad, we have the correct Ductless or Chemical Filtration Fume Hood for you. Please contact one of our fume hood experts for more details.
9860 Pflumm Road
Lenexa, KS 66215
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