excellent richard! i am definitely in need of a local network. feel free to email directly at pulsechic@... thanks, marinda ... From: R. Hoffman To:...
8755
Carlos Bonifetti
cebondiet
Nov 1, 2007 7:53 am
Hi Fachri, As was said by other members, you must know the first flow and head available for the MHP plant, for select the turbine type, Cross flow, Pelton or...
8756
wae_lagi
Nov 1, 2007 8:17 am
Hi Agus... It is nice to know you. Have you installed any MPH system in Indonesia? Thanks and regards Fachri Hamdan ... wecan sharing it with you and can you...
8757
Mark Drabick
bigpogue
Nov 1, 2007 5:10 pm
Richard...........you'll need to post your email address so we can contact you........mark in NH ... From: R. Hoffman To: microhydro@yahoogroups.com Sent:...
8758
keith flaherty
keith_flaherty@...
Nov 2, 2007 6:54 am
I have a question for the group. I have a stream and have put in a 6" pipe with about 100' of head. The stream flows somewhere between 5gpm in summer to more ...
8759
keith_flaherty
Nov 2, 2007 6:54 am
I have a micro hydro project that I'm starting to build. I need some help sizing the electircal conduit and the wire. I have a 6" pipe with about 100' of head....
8760
John Bertl
jbertl@...
Nov 2, 2007 5:08 pm
Wire size is determined by the amperage you need to transmit and the voltage losses you are willing to accept. What is a 5K system? 5K means 5,000. If you are...
8761
nando
nando37@...
Nov 2, 2007 5:08 pm
Keith: You need to define the generated voltage and the power to be able to determine the wire for minimum wiring losses. 5 gpm = 0.315 liter/sec and 100 feet...
8762
Manfred Mornhinweg
mmornhin
Nov 5, 2007 7:27 am
Hi Keith, ... It seems to me that a 6" pipe is a little small for 5kW from a 100' head. But I will concentrate on your electrical question. Wire size is based...
8763
keith flaherty
keith_flaherty
Nov 5, 2007 7:27 am
I meant 5KW. I haven't figured out the voltage. I'm just approximating the wattage from the flow and head charts I've found online. My main issue right now is...
8764
ferrand
ferrandst
Nov 5, 2007 7:28 am
PLEASE CONTACT MR BATTERSBY DIRECT IF INTERESTED We have an unused new 40kW generator, because we upgraded from 40kW to 55kW when we raised our weir and as a...
8765
bobmagi@...
bobmaginnis
Nov 6, 2007 6:53 am
5,000 w / 240 volts = 21 amps 8 gauge copper wire 0.641 ohm/1000 feet @ 77 F degrees 1200 feet (round trip)X 0.64 = .77 ohms 21 amps X 0.77 = 16 volts drop ...
8766
nando
nando37@...
Nov 6, 2007 6:57 am
Keith: The wire size depends on the power and voltage. You have not stated the generated voltage. If you want to experiment visit :...
8767
keith flaherty
keith_flaherty
Nov 6, 2007 6:57 am
Thanks Manfred; I guess I need to crack open my old electrical books. I appreciate the input. I think according to both you and Nando, I should consider up...
8768
DaveHempstead
Nov 6, 2007 7:01 am
Hi, I'm interested in trying to build a Gorlov Helical Turbine for a river micro hydro setup (for my own home use). Does anyone have information on what it...
8769
fazal haq
frazzle_ranolia
Nov 6, 2007 4:53 pm
can i make ice from water potential & how. how much it would cost to me on commercial level? thankin ' you all. ...
8770
Dennis Buller
dennisbuller
Nov 6, 2007 4:53 pm
Hey Dave, I do not have any info on making a Gorlov Turbine, but I think it would be very difficult. If you go to my "Contact" page I have a bunch of "run of...
8771
Steve Gregory
sdgregory@...
Nov 6, 2007 4:53 pm
Don't do it Dave. The twisted blades make it more complicated without providing any increase in efficiency despite what his website says. I have straight...
8772
bobmagi@...
bobmaginnis
Nov 6, 2007 4:53 pm
I made an error in my division. 16/240 = 6.6 percent, not 4 percent While 6.6 % line loss might be acceptable in some cases, it is a waste that can be avoided...
8773
keith flaherty
keith_flaherty
Nov 6, 2007 4:53 pm
Thanks Bob: So I'm looking at pulling 2-#6 wires with a conduit size works for that. I'm figuring to put pull boxes at around 100'. Keith ... ...
8774
nando
nando37@...
Nov 6, 2007 4:56 pm
Bob: You need to ask FIRST: Single or 3 phase 5000 watts power, then calculate on those basis. Nando ... From: bobmagi@... To: microhydro@yahoogroups.com ...
8775
DaveHempstead
Nov 8, 2007 7:18 am
Thanks Dennis for the suggestion. I'll check the Natural Currents link. I am also in New England, and yes, I have a 'problem' with speed (low speed flow, but...
8776
DaveHempstead
Nov 8, 2007 7:25 am
Thanks Dennis for the suggestion. I'll check the Natural Currents link. I am also in New England, and yes, I have a 'problem' with speed (low speed flow, but...
8777
fluffhead08
Nov 8, 2007 7:26 am
My understanding is that the Darrieus puts out a bit more instantaneous power but it is a pulsating output whereas the Gorlov turbine output is smoother. I...
8778
Dennis Buller
dennisbuller
Nov 8, 2007 4:21 pm
Hey Dave, Take a look at my video on the first page. The Spiral pump changes rotational motion into pressurized air and Fluid. I have designed an enclosed...
8779
Michael Welch
solarbozo2000
Nov 9, 2007 7:21 am
For making electricity, a person would be better off running the generator directly off the paddle wheel. Fewer conversions means fewer losses. I am curious,...
8780
Dennis Buller
dennisbuller
Nov 13, 2007 7:18 am
Hey Michael, Sorry for taking so long to write back on this one, very busy. The problem is one of speed and cost. Most cheap generators (like the ones I can...
8781
gajendran_env
Nov 24, 2007 2:20 pm
Sir/Mam, i herewith enclosed the details of the National seminar on Application of GIS in civil Engineering, kindly find in the attachment with thanks ...
8782
shreshai
Nov 26, 2007 7:10 am
Dear sir, I am civil engineering graduate form Nepal.I have worked for two years in hydropower.I am doing my master degree and for my final project Problems...
8783
kenny.hohman
Nov 26, 2007 7:11 am
My name is Kenny Hohman from upstate N.Y. My father Tom has successfully completed a hydro operation in our back yard running off of a waterfall. He has been...
