My Modern-Aire/Abbaka is LOUD--please help!
hollylh
11 years ago
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attofarad
11 years agoteachmkt
11 years agoRelated Discussions
Will this Abbaka hood liner work for my situation?
Comments (8)Flatness itself is not the issue, inadequate aperture is the issue. One could have a 24-inch deep aperture with 16-inch baffles so long as there were some rising sloped sheet metal to connect the two. Baffles should capture grease with about the same efficacy no matter the angle. Commercial hood baffles have to be at a steep angle above 45 degrees (IIRC) to drain grease. In residential use, routine washing should be adequate. I think my Wolf hood baffles are at only around 20 degrees. However the two banks of them cover nearly the entirety of the aperture area which is large enough for capture. (Front-to-back actual aperture on my Wolf Pro Island hood is 24.5 inches.) I assume then that you have a hood that is externally 25 inches front-to-back, but only 16 inches is actually aperture. This would likely be inadequate to capture all the cooking effluent from front burners. One really needs most of the 25 inches, depending on configuration and trapping effects of walls and cabinet sides and height of the hood. Quietness generally requires an external fan and an intermediate silencer/muffler in the duct. At best this will leave only aerodynamic turbulence noise around the baffles, which should be tolerable at normally adequate flow rates. kas...See MoreModern-Aire Vent Hoods?
Comments (24)erikanh: that's the first picture of your hood/range I have seen, and it rocks! Totally different look than our kitchen but I love it. The way you've assembled the critical elements of cooking into a compact, incredibly efficient layout is fabulous. It makes me want to drop everything and start cooking right now. And, of course, the hood is gorgeous. Great job. rgjem: you are asking the right questions. Clearly if you are ducting straight out the wall, with only a very short run of duct, there is little advantage of an external blower, as the distance is too short to give you the noise reduction you'd want from an external blower. The alternative is to run duct all the way up to the attic and roof. That's what we did. That allowed us to use a Fantech inline blower and silencer, and the result is an unbelievably quiet hood. I am totally ecstatic with it, but others might not find it quite as ideal. The duct installation was a nightmare, involving many hours of HVAC consultation. The performance of the blower is reduced by the long duct run, though the layout of our range (which is in an entirely enclosed alcove, which greatly enhances hood performance) compensates totally: I can sear at max temp and have not a wisp of smoke escape. For me it was a no brainer but many others, who would prioritize cost, and maximum cfm performance, would choose otherwise. I am going to take the liberty of quoting a recent email from Jeff Herman at Modern Aire which I think is the clearest explanation of the pros and cons of internal vs external vs inline blowers (Jeff was aware I might do this). It was directed at another potential customer who had corresponded with me, thus the reference to my (Mark's) hood: Our hoods are supplied for use with our internal motors 600 Â 2400cfm, Abakka exterior blowers 1000 and 1400cfm, and Fan-Tech inline blowers so switching for the fan is not a problem. If you are planning on using the Fan-Tech inline I highly recommend using the silencer. It makes a very dramatic difference in regards to air and motor noise at higher speeds. The Abakka exterior blower is the quietest option we have going right now, but the performance is not as good as the inline IMO. If pure performance is the most important then our internal blowers are the best way to go, they are louder in comparison to MarkÂs set up, but are moving more air then the inline or exterior blowers at 1200CFM. Our internal blowers compensate for higher static pressure loads and do not slow down when connected to ducting making them a great choice for super long duct runs or duct runs with many turns or transitions" HTH...See MoreAbbaka vs Greenheck - Rooftop Range Hood Blower
Comments (18)Ok, finally. Here is the dBs for Abbaka 1400 remote blower with silencer. Vent pipe is 10”. Vents out to ceiling about 30’ from stove top. I used the Decibel X app as recommended. On high: Under stove top, 64.1 10 feet away, 53.7 30’ away, under silencer in ceiling 51.7 On Low: Under stovetop 54.2 10’ 41.6 30’ 39.8 We really like it. Probably the most important feature we put in our kitchen! Can’t stand kitchen smells of garlic and onions and dislike a lot of noise. Thank you all for your input. Sorry it’s taken me so long to get back to you with numbers. I blame the 7 slabs of granite that cracked, broke or were not advertised size. Thanks again for all of the input. Debbie...See MoreGrease drip from Modern Aire vent
Comments (16)"So where does the grease go?" The short answer is wherever gravity lets it flow. I'm surprised at Wolf for not including the ledge trays that collect grease that migrates from the baffles unless your liner design has the baffle assemblies level instead of tilted. In that case, the grease will fill up in the lower baffle part. This should be a slow process. Some grease will attach to the hood interior and to the ducting to the roof. The rest is expelled. The grease particles are of various sizes, described as a spectrum. The larger particles are easiest to remove with the baffles, and the smaller particles tend to be expelled. Intermediate particles are partly captured by the baffles, partly by the ducting, and partly expelled. Capture of grease particles by the baffles is by centrifugal impingement as the air and entrained plume are moved along an "S" shaped path past the baffles. This process expects some minimum air velocity to achieve the effectiveness intended by the designer. This is likely close to the nominal 90 ft/min at the hood entrance aperture needed to assure containment of the rising effluent. Hence, greasy effluent is best treated by operating nearer to full blower speed than minimal for containment blower speed. Noise and MUA heating needs may cause one to tend toward lower speeds and thus require more frequent cleaning of the inner reaches of the hood. kas...See Moregwlolo
11 years agoTrevor Lawson (Eurostoves Inc)
11 years agokaseki
11 years agoattofarad
11 years agogoin2swim
11 years agorobert_sett
11 years ago
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