Dear microhydro yahoo group manager: It appears that the below message is a common problem for this group: newcomers or information-seekers are not aware of what basic data is required for other members to give a helpful response. We see a large percentage of email communications wasted on this "dark room" phenomenon.
Proposed solution: Is there a way to include a MINIMAL "signature" message in every [email protected] email which lists the basic data required on microhydro set-up inquiries? (example signature message: "For group members to provide the most efficient response, please include desired power output, head, x, y, z, etc... in all initial inquiries on setting up a microhydro project") If that's not possible, this is a humble request for the more active teachers in this group to make their own similar email signature. Just a thought - and i'm also curious to know the list of "basic data" headings. Peter >From: "HYDRO" <[EMAIL PROTECTED]> >Reply-To: [email protected] >To: <[email protected]> >Subject: Re: [microhydro] Re: Cross Flow Turbine >Date: Wed, 7 Dec 2005 08:04:10 -0600 > >DON: > >Still, you are not clear ! > >Why don't You detail your plans and desires. >Spillway is 4 feet= 1.2 meters by 3 feet= 0.91 meter ( also 12 square feet >=1.11 square meters) and 25 % low flow == What are you trying to say here, >is 25 % of 1200 CFS = 34 M^3 or what > >If you are using spillway is allowing 0.25 *1200 = 300 CFS a second, the >velocity of the spill way is at least 300/12= 25 feet/sec or 17 Miles per >Hour . > >So without extending myself, you need to seat down and detail what you want >or need and present IN detail the parameters of the stream or site -- >without - "shorthand" writing for those, that may be interested to give an >opinion, to really understand what can be done and be able to suggest the >best, from their point of view, because right now, we are looking into a >very "dark room" that does not even allow to see figures and objects >inside. > >Nando > >----- Original Message ----- >From: "donny_nj" <[EMAIL PROTECTED]> >To: <[email protected]> >Sent: Wednesday, December 07, 2005 1:20 AM >Subject: [microhydro] Re: Cross Flow Turbine > > > > --- In [email protected], "HYDRO" <[EMAIL PROTECTED]> wrote: > >> > >> Depending on the power you would like to harvest , the cross flow > > may be > >> not be a good solution. > >> > >> 10 feet= 3 meters 1200 cfs= 34 M^3/s may give about 600 KW. > >> > >> Questions: Can you use 100 % of the water volume ?. > >> If not how much ?. > >> Does the stream carry fish ? > >> If yes, what are the limitations for the area ?. > >> > >> A Propeller may be the better turbine for your site. > >> > >> Nando > >> > >> > >> .The # are based on the low flow rate of the year. If we use the > > origanal spilway aprox 4ft wide 3ft dp and 25% flow, This will have > > very little impact on the wildlife due to the fact the flow make a > > 180 deg bend over 400ft with low turbance. The head of 10 - 12 feet > > is well in reach with out reconstruction the dam. If we did replace > > the dam that was built in 1910, then total head is well over 25 > > feet, and have a major impact on the wildlife, Ps the beaver that > > live there would be pissed off as well. I hope this provides a > > little more info. Thanks Don Barry > >> ----- Original Message ----- > >> From: "donny_nj" <[EMAIL PROTECTED]> > >> To: <[email protected]> > >> Sent: Friday, December 02, 2005 1:19 PM > >> Subject: [microhydro] Cross Flow Turbine > >> > >> > >> > Hi im located in NJ and looking for some one near by that is > > running > >> > cross flow system, we currenty hoave a location in VA with a old > > water > >> > wheel 14ft by 4 ft, hassent run in years, the dam is no longer, > > but we > >> > still have 10 to 12 feet of head to play with, total flow in the > > dry > >> > time is over 1,200 cfs. It located on over 60 ackers farm. if > > some one > >> > has info of a local sight in nj or other info let me know. thanks > >> > Don B > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > Does your company feature in the microhydro business directory > > at > >> > http://microhydropower.net/directory ? If not, please register > > free of > >> > charge and be exposed to the microhydro community world wide! > >> > > >> > NOTE: The advertisements in this email are added by Yahoogroups > > who > >> > provides us with free email group services. The microhydro-group > > does not > >> > endorse products or support the advertisements in any way. > >> > > >> > More information on micro hydropower at > > http://microhydropower.net > >> > > >> > To unsubscribe: send empty message to > >> > [EMAIL PROTECTED] > >> > Yahoo! Groups Links > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > > > > > > > > > > > > > > > > > > > Does your company feature in the microhydro business directory at > > http://microhydropower.net/directory ? If not, please register free of > > charge and be exposed to the microhydro community world wide! > > > > NOTE: The advertisements in this email are added by Yahoogroups who > > provides us with free email group services. The microhydro-group does >not > > endorse products or support the advertisements in any way. > > > > More information on micro hydropower at http://microhydropower.net > > > > To unsubscribe: send empty message to > > [EMAIL PROTECTED] > > Yahoo! Groups Links > > > > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. 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