Re: [RE-wrenches] Solar and pumped hydro

n # 4? Regards Keith From: jay peltz To: RE-wrenches Sent: Monday, August 24, 2009 3:11:41 PM Subject: Re: [RE-wrenches] Solar and pumped hydro Hi Keith, I get this question a lot. 1. Best efficiency for a hydro from potential energy in to actual output watts( not including wire loss)

Re: [RE-wrenches] Solar and pumped hydro

s the holy grail. Thanks to all for the hydro feedback. From: David Palumbo To: RE-wrenches Sent: Monday, August 24, 2009 3:43:58 PM Subject: Re: [RE-wrenches] Solar and pumped hydro Hi Keith, That is my place. Hydro pond is both spring fed and fed

Re: [RE-wrenches] Solar and pumped hydro

Jay Ok How about the long version? Can you also elucidate on # 4? Regards Keith From: jay peltz To: RE-wrenches Sent: Monday, August 24, 2009 3:11:41 PM Subject: Re: [RE-wrenches] Solar and pumped hydro Hi Keith, I get this question a lot. 1. Best

Re: [RE-wrenches] Solar and pumped hydro

In a message dated 8/25/2009 6:43:33 A.M. Pacific Daylight Time, m...@oasismontana.com writes: maybe on the utility scale, but not on the micro-hydro scale. Not really, Or only if you have free power to dump. Pge uses pumped storage in their system in California but relies on night

Re: [RE-wrenches] Solar and pumped hydro

udi=B6V2S-49PRFMP- 7&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C50221&_version=1 &_urlVersion=0&_userid=10&md5=9d6b2fba77001e9649de77a59f616812 ---- Original Message Subject: Re: [RE-wrenches] Solar and pumped hydro From:

Re: [RE-wrenches] Solar and pumped hydro

To: 'RE-wrenches' Subject: Re: [RE-wrenches] Solar and pumped hydro Hi Keith, That is my place. Hydro pond is both spring fed and fed by a small seasonal brook, no pumping. I figure approximately 50% to55% efficiency for a high head micro-hydro turbine (Harris PM), not inclu

Re: [RE-wrenches] Solar and pumped hydro

your idea is worth thinking about for regions such as Hawaii I believe. Dave From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Keith Cronin Sent: Monday, August 24, 2009 2:43 PM To: RE-Wrenches Subject: [RE-wrenches] Solar and pu

Re: [RE-wrenches] Solar and pumped hydro

Nicely informative reply as usual, Jay. One thing about a gravity based energy storage system is: gravity cannot ever wear out, unlike (insert expletive here) chemical batteries. The pump and/or hydro generating gear could wear out in a "pumped storage" situation, of course...but still would probab

Re: [RE-wrenches] Solar and pumped hydro

Hi Keith, I get this question a lot. 1. Best efficiency for a hydro from potential energy in to actual output watts( not including wire loss) is around 40-60% depending on the exact application, turbine etc. 2. Efficiencies of pumps, is around the same at best. 3. This won't replace the

[RE-wrenches] Solar and pumped hydro

Hi Have any of you considered using PV to pump water to a holding area and releasing it and capturing the kinetic energy via a pelton wheel/hydro? If so, what do we think are the efficiencies and value of doing such a project are? Meaning, back of the napkin, PV is + - 77% efficient, minus "x"