1200cfm oversized hood...Overkill for 30" BlueStar range?
ILoveCookie
10 years ago
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Golden David
10 years agoILoveCookie
10 years agoRelated Discussions
36' 1200 CFM hood?
Comments (14)We have some very recent experience and observations I can share. We just put in a 36" Wolf Rangetop and decided to go with a 42" hood per the comments noted above. We also put in a 1200 CFM variable speed external blower. Our solution was an Abbaka liner and a broan external motor. In the end, it was a decision between modern aire and abbaka. It could have gone either way between those two companies. The prestige liner was in the running due to its large capture area BUT it had a few features we could not live with. One was the heigth of the unit. At the time we were selecting the liner, we were unsure if we were going to exhaust through the wall or the ceiling. It would not work going through the wall in our application. The other reason is look where the controls and lights are. They are at the top of the pyramid. Neither my wife or I wanted to have to put my arm up there every to adjust the lights, to turn on the fan or adjust the fan speed. Also, I would expect things to get greasy up there. I know you can get external controls and mount them on your wall but the grease on the lights etc was sufficient to make us look elsewhere. In the end, we are very happy with the results. The unit is MUCH quieter (and efficient which one would expect of the larger CFM) than the vent a hood we have in another house. The external motor is located a couple of feet above the liner so we were unable to put in a silencer but what a difference still. On all speeds you can easily talk in the kitchen and not have to talk over the fan noise. You can hear easily etc. On low/medium, its a low hum. Here's some pictures From finished kitchen From finished kitchen From 30 Nov...See More600 or 1200 cfm over 30' bs or cc
Comments (8)I just moved and thought my experience with my old house and the new house might help. Old house: Range: Thermador 36" with 4 burners; each rated at 15000 btu (I think); mostly do stir-fry; never had more than 2 burners on. Hood: 36"-wide; equipped with an internal blower, rated at 600 cfm; has 2 settings (low and high); the duct goes up, turns 90 degree, and travels between joists for about 18' to the exterior wall. My experience: The hood is used 80% on the "high" setting. It is noisy but acceptable. It gets the job done most of the time but falls short when I pan-fry steaks or fish - the house would be filled with smoke and smell oily. New house: Cooktops: I have two 15"-wide cooktops; one has a single gas burner rated at 18000 btu and the other is an induction (3.6 kw) with 2 elements. Hood: 36" wide with an external blower rated at 1300 cfm; has 3 setting; the duct goes up, turns 90 degree and goes immediately through an exterior wall. My experience: the hood is 90% on "low", 10% on "median" and never on "high" (aside from testing). When on "median", it's comparable to my old hood on "high" in terms of the noise level but do not have the smoke/smell issues like the old one. So overall, it's quieter and gets the job done. My suggestion: Go for the 1200!...See MoreBlueStar vs. Wolf Vent Hood
Comments (21)It is worth pointing out, I think, that the pressure differential across the blower, called pressure loss, is essentially the same whether the blower is in the hood, at the end of the duct outside, or in a door blowing into an otherwise sealed house. The pressure loss is the sum of all the losses due to friction and turbulence in the duct, duct cap where present, hood transitions, baffles, make-up air system restrictions, etc. Any slight differences in pressure loss with blower position will be due to local transitions where the blower is mounted versus the blower's air flow uniformity at the blower exit. The resulting flow rate will be that which applies to that pressure loss on the fan curve plot. Front of hood deposited grease is due to insufficient overlap and/or insufficient air velocity at the hood aperture. Hoods are generally poor at drawing air from the vicinity of the burners. Most plume capture depends on the plume's upward velocity, mainly driven by the buoyancy of hot grease and water vapor and air. The plume naturally expands as it rises, hence hood aperture overlap is desirable....See MoreRange Hood Selection for Blue Star Platinum 48" Rangetop
Comments (19)This is a city apartment so most heat is provided through steam radiators heated by a huge multi-million BTU industrial boiler in the basement with no furnace in the apartment itself. The apartment has a central air conditioning system with 3 zones and a 2.5 ton air handler for each zone. The other two zones are a/c only, but the kitchen's zone will have an electric heating coil. A 2.5 ton air handler has 30,000 BTU capacity, which according to your chart, is enough to heat 30 degrees at 1200 CFM. The MUA is drawn from a distant exterior vent over 50 feet away from the kitchen zone's air handler through the return air ducting, so the MUA will mix with the rest of the apartment's already heated (or cooled) return air as it moves from the exterior through the apartment to the kitchen zone's air handler. As a result, the outdoor air will be tempered with a lot of 65-75 degree air before it ever hits the handler to be conditioned. As it was described to me, even if the outdoor temperature is 20 or 30, by the time it gets to the handler, we won't ever need to heat more than the 30,000 BTU air handler's capacity....See Moreweedmeister
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