range hood/extractor fan??
stillpitpat
6 years ago
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Bath exaust fan/range hood ducting
Comments (6)Sierraeast: You can use one outside exhaust vent for both of them. Put a "T" cap with the opposing openings the same size or larger than the opening connecting to the pipe on the outside of the vent tube so that the "T" openings run horizontally. It will prevent back pressure blowing through the vent and possibly mixing toilet air with kitchen air. Any air passing through the horizontal "T" fitting will cause a venturi effect (I'm old enough to remember carburetors.) which will actually suck air out of the vent tube. The lower position of the vent in the bathroom and the position of the range hood relative to the higher placement of the outside exhaust position will form a natural upflow which will be aided by the venturi action of outside air flow across the horizontal "T" cap. This will work well for outside vent placement but will not work if they both vent to an attic crawl space. You need moving air for the "T" to work right Forgive Bama Dude, he's a good guy but undertrained by Trane propaganda. Fairyprincess...See MoreNice-looking wall-mount kitchen kitchen extractor fan -not hood!
Comments (6)There is this, from Nutone that is indicated for removing cooking odors and steam from kitchens but that it is Not to be mounted over cooktops. There was a company that made decorative antique looking ones that had the same disclaimer that they were for room ventilation but not over cooktops, but they went out of business. The old versions of these used to come with a round grease filter. The other thing is that I don't know where you live but the older versions of this let a lot of cold air in, too. Here is a link that might be useful: Nutone...See MoreModifying a Range hood for more fan control (Zephyr)
Comments (26)For dc applications, one might think of capacitors as having some battery like properties -- generally less amp-hr capacity than a battery, but lower series resistance. In ac applications, a capacitor (left to itself) provides a 90-degree phase shift to the relationship of current vs. voltage. In EE terminology, the relationship of voltage to current is the impedance, and passive ideal components are characterized as: resistors (Z = R), inductors (Z = wLj) and capacitors (Z = 1/wCj) where Z is impedance, w is natural frequency (2pi f) and j represents the square root of minus one; R, L, and C are resistance, inductance, and capacitance, respectively. The use of imaginary numbers relates to the imaginary exponential definitions of sine and cosine, or alternatively, the use of vectors in the complex plane to represent phase and magnitude. Combinations of these components can provide various frequency dependent voltage vs. current functions. Even more potential for voltage vs. current functions exist when the components are used within active circuits. In other words, even the most basic aspect of electrical engineering is more esoteric than one might imagine. In the motor circuit, the purpose is merely (!) to shift phase. I expect that capacitors have been performing this function since before vacuum tubes were developed for amplification in radios. Large single phase motors not needing capacitors were used a century ago, e.g., induction repulsion type, but I think they have fallen out of favor, or are only used where the capacitors would need to be monstrous. Most industrial areas of the US have three phase power these days, so capacitors are not needed for large motors because the three phases already provide the necessary phase shift. Tiny synchronous motors as used in clocks directly wired to electricity use a different no-capacitor technique to shift phase -- I think I've seen a description somewhere on the Internet. kas...See MoreBosch range hood fan low hum and not sucking air
Comments (1)Assuming this is an induction motor, maybe its starting capacitor has died. Best to ask Broan if you can find a tech support contact number. In my experience, Broan parts are available for a long time, but the motor and its internal components are likely sold as a single unit....See Morestillpitpat
6 years ago
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