Talk:Water turbine

message: Some anon editor changed the ranges for the various types. I've just checked Hydro Electric Engineering Practice and figure 1.2 is more consistent with the 17:47, 13 July 2005 edition, so I've reverted it. Anyone revising, please cite sources! --Wtshymanski 14:05, 15 July 2005 (UTC)
thread_title:  Head 

message: I have a question about where the various forms of turbine which are under rapid development at the moment to capture tidal stream energy fit into the categorisation of water turbines presented in this article. They don't seem to be either reaction or impulse turbines so is there another category that should be added? If so, does it have a conventional name? Chris55 (talk) 19:07, 17 August 2008 (UTC)
thread_title: Tidal Turbines

message: http://picasaweb.google.ca/evexano/UntitledAlbum  —Preceding unsigned comment added by 99.199.26.97 (talk) 00:18, 2 June 2009 (UTC)
thread_title:  Buoyancy turbine 

message: How exactly differs a turbine from a bladed rotor (as used in windmills, ...). Is the difference that a rotor also has plating to direct water into the rotor (eg like a funnel). Depending on the answer here, the article definition is to be changed or the article needs renaming.
:Don't rename the article. Read the literature. --Wtshymanski (talk) 13:34, 30 September 2009 (UTC)
replies: text:  I don't want to change the name, just make the article more coherent at turbine its says:
A turbine is a rotary generator that extracts energy from a fluid or air flow and converts it into useful work. The simplest turbines have one moving part, a rotor assembly, which is a shaft or drum, with blades attached. Moving fluid acts on the blades, or the blades react to the flow, so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and water wheels.
This makes it sounds as if there is no difference, which is wrong ? Anyhow, the article needs to become more clear on this subject  —Preceding unsigned comment added by 81.245.90.148 (talk) 10:56, 9 October 2009 (UTC)
replies: text: Found own composed definition:
A turbine is the whole of a rotor and stator (or a electrical generator without the blades). Turbines are thus only used in electrical generators.
I'm guessing this is correct; if so change the definition of this article and change the image to make it more clear
81.245.90.148 (talk) 11:05, 9 October 2009 (UTC)
thread_title: Definition

message: In § "Time Line" it states that the early Roman designs "were found at Chemtou ... dating to the late 3rd or early 4th century AD", but in the uploaded photo in this section it says C.114 AD:
"Vertical axle watermill at Chemtou, Tunisia c.114 AD. The date is taken from the inscription CIL VIII, 10117. While the inscription was not attached to this structure, it is reasonably sure that the two are related."
Not sure which is correct?
WhiteMonkey (talk) 11:38, 19 July 2010 (UTC)
thread_title:  Time Line 

message: Please can someone correct the spelling of "wicket" on the diagram at the top of the article?  I can't believe they really meant "wicked"!Clampower (talk) 14:35, 4 March 2012 (UTC)
replies: text: Fixed—thanks for spotting this. This was a quick and dirty edit, so apologies to both of the original contributors! --Old Moonraker (talk) 15:40, 4 March 2012 (UTC)
thread_title: Diagram

message: The maths in this section appears to be wrong, Power output, given the inputs in the page should be in kilojoules and kilowatts. This is important because I have found many people on the net using this equation, which is leading to a lot of confusion.  If density of water is given in kg per cubic metre then the output will be in Kilowatts and not watts as mentioned. For instance if head or height of water is 150m , density of water is 1 (i.e.,1000kg/cubic metre) and flow of water is 0.095 m^^3/sec (i.e., 95 litres/sec) and gravity is taken as 9.8m/s^^2. Then output will be 105.717 kW and not 105.717 Watts which would be ridiculous.  Kindly advise if my point is pertinent and  valid. If no objection is received I will edit the section to show the correct units, although ideally mass should be shown in Newtons to get an output in Watts or Joules. DDjames  — Preceding unsigned comment added by DDjames (talk • contribs) 11:53, 17 June 2012 (UTC)
thread_title:  Power section in water turbine page 

message: I agree that we probably shouldn't say it's a "rotary engine." While technically it does rotate and it is a type of engine, "rotary engine" has a meaning of its own that's different from a water turbine. I'm not too crazy about "rotary motor" either. Maybe "rotating machine"? Or "turbine driven by water", which is a bit vacuous but is what my dictionary says? Kendall-K1 (talk) 18:14, 25 March 2016 (UTC)
replies: text: I don't like "rotating machine" because it doesn't distinguish turbines from pumps. "Turbine driven by water" is fine by me, and it links nicely to turbine and hydraulic power, but I know that some dislike it in a lead as too obvious a tautology. Rotary motor is correct, although the term is most commonly applied (for water-powered motors) to those with pistons used for distributed hydraulic networks. Motor is better than engine (even under current WP target articles) as the definition of engines as fuel consumers and motors as energy transformers works here.  Rotary engine is just wrong, and still wrong no matter how many times you add it. Andy Dingley (talk) 19:29, 25 March 2016 (UTC)
replies: text: Yes, I see your point, but the sentence does go on to say "...that converts kinetic and potential energy of water into mechanical work" thus distinguishing it from a pump. At Turbine we have "a rotary mechanical device" which seems a bit jargon-y, and at Turbomachinery "machines that transfer energy between a rotor and a fluid." I checked a few textbooks but none come right out and define "water turbine" in a clear way. I'm going to change it to "rotary machine" for now because "rotary engine" is no good, but let's see what else we can come up with. Kendall-K1 (talk) 19:56, 25 March 2016 (UTC)
replies: text: Well now that I've done that I looked at Machine and I'm not very happy with that either. Kendall-K1 (talk) 20:00, 25 March 2016 (UTC)
thread_title:  Rotary engine 

message: *(turbulent) vortex turbine (Turbulent's micro hydropower plants)  Setenzatsu.2 (talk) 22:55, 21 April 2020 (UTC)
thread_title:  Other