[sudo-discuss] Power grid: part one: was Re: Sudo room should be about creating
Anthony Di Franco
di.franco at gmail.com
Tue Mar 26 17:01:25 PDT 2013
Think globally, act accordingly vs. Think locally, act locally vs. Think
locally, act globally?
Why choose, except to get rid of that last one?
On Tue, Mar 26, 2013 at 4:54 PM, <hol at gaskill.com> wrote:
> george you beat me to most of it!
>
> alcohol-based auxilliary power units instead of natural gas turbines??? if
> only we could synthesize a form of chlorophyll...it's like a magic wand if
> you look at the molecule
>
> also "how much of what should exist" is a less useful question than "what
> is underutilized, and what can i do personally to fill in that gap". I
> don't think it will be apparent what the final generation split will be as
> much as it will be which ones are underutilized due to the combined lack of
> funding and mass adoption
>
>
> Mar 26, 2013 04:44:41 PM, di.franco at aya.yale.edu wrote:
> Relevant design questions:How much power generation / storage /
> transmission capacity exists at various scales?
>
> How much of each should exist at each scale if taking advantage of
> currently little-used technologies to improve overall system goals
> (efficiency, resilience, ...)?
>
> I claim a promising answer to the second set of questions is more
> generation and storage at smaller scales (village / neighborhood / city
> mainly with some at home), with a corresponding reduction in that at the
> larger scales, not inconsistently with any of the things you pointed out.
> Involving a very broad range of options including such as growing crops for
> fuel to burn alongside waste at small scales.
>
>
> >
> >On Tue, Mar 26, 2013 at 4:35 PM, Anon195714 anon195714 at sbcglobal.net>
> wrote:
> >
>
>
> >
>
>
>
>
>
> >
> Here I'll have to differ, speaking from experience a) having worked
> on a couple of household solar installations, and b) having worked
> on design engineering and business planning for wind farms of 49 MW
> and 250 MW rated capacity, and c) from knowledge gained from folks
> at the nation's oldest regional solar contractor, that has been a
> client of mine for the better part of a decade.
> >
>
> >
> Decentralized power generation as compared with major power plants,
> is like desktop computers as compared with mainframes or server
> farms. The value of a desktop computer or a hand-held device is not
> only in what it can do by itself: the value of it increases
> radically when it's networked with other devices.
> >
>
> >
> If you want to "cut the wires," be prepared to spend thousands of
> dollars for a battery bank at your home, to store the solar power
> from your roof. This represents not only large cost, but a large
> commitment of material resources used in an ecologically and
> economically wasteful manner.
> >
>
> >
> But when your household solar is connected to the grid, you can
> "upload" power you don't need at the moment, and "download" power
> when you do. You can optionally have a small backup battery that's
> sufficient for night-time power for essentials (a couple of lights,
> telecoms, and fridge) if the grid goes down in an earthquake.
> Economically and ecologically it's a winner. "Grid-tied solar" is
> the business model that has been so successful that nationwide solar
> firms have sprouted to provide solar leasing to the public.
> >
>
> >
> The same case applies to wind, and here, basic physics and
> arithmetic prove the point. The efficiency of a wind generator is
> proportional to the swept blade circle, based on the relationship
> between the diameter and the area of the circle. Home-sized wind
> generators are insufficient to power homes except in Class 4 and 5
> (high wind) areas. Wind generators only begin to become efficient
> in the range of 250 KW and up; the largest ones today are in the 5
> MW range.
> >
>
> >
> Wind is subject to intermittency, so it requires either storage or
> integration with other power sources. The ideal case is to use
> water as the storage medium, for example by teaming up a new wind
> farm with an existing hydroelectric dam. New-design "micro
> reactors" or "nuclear batteries" using intrinsically safe fission
> technology are also viable in this role, and lastly, natural gas
> turbine "peaker plants" can be used (they are the cleanest
> carbon-based option and acceptable in conjunction with renewables).
>
> >
>
> >
> It may be that at some point, a new type of solar, fission, fusion,
> or advanced-physics technology, becomes feasible for household use.
> But even then: interconnecting homes and other buildings, provides
> backup for times when you have to take your machine off-line for
> maintenance, or if it malfunctions and has to be replaced.
> >
>
> >
> More about a better model, "the internet of electricity," in my next
> posting...
> >
>
> >
> -G.
> >
>
> >
>
> >
> =====
> >
>
> >
>
> >
> On 13-03-26-Tue 3:41 PM, Anthony Di
> Franco wrote:
> >
>
>
> >
>
> Production of alternative energy can be
> and for most reasons probably should be much less centralized,
> equivalently, smaller-scale, than production of energy mostly
> is now. (Off-grid, as you mention, but very literally.)
> Large-scale up front + large, complex
> distribution networks is revealed as an obsolete architecture;
> large scale distribution networks become relatively less
> important, so even if the answer to your question is no, which
> it probably isn't given crowdfunding and other
> disintermediated finance gaining momentum, it's moot, or at
> least of much less relative importance.
> Put another way, when the most important
> goal is maximum efficiency rather than maximum centralization,
> large upfront capital investment + large, complex distribution
> network is stupid; proper
> accounting of all costs and benefits in a global rather
> than piecewise local sense reveals this now for agriculture,
> manufacturing, energy, ...
> Even now, buffering between supply and
> demand is a constraint on grid architecture leading to great
> economic demand within the current paradigm for distributed
> storage / production of energy according to someone who came
> through sudo room whose name escapes me.
> This loosely-drafted email brought to you
> by the slogan,
> "localize
> production, virtualize everything else" and the acronym
> STEMI
> compression.
>
>
> >
>
> >
> On Tue, Mar 26, 2013 at 3:17 PM, Romy
> Ilano romy at snowyla.com>
> wrote:
> >
>
> >
> Is it possible to create alternative energy
> distribution networks (biofuels/solar/ wind etc) that
> replace mainstream petrol and natural gas based energy
> without a large financial sector?
>
> >
>
>
> the vc system that funds these alternative energy
> start-ups piggy backs off the investment banks, etc. and
> big private equity and institutional investment funds.
> vcs are like a fly on the @ss of a financial hippo.
>
>
> >
>
> I haven't heard people discuss off-grid that much in
> the tech talks I've been to( which are excellent). Is
> there a conversation here that would show how off grid
> is a viable alternative, even if it's not a big money
> solution?
> >
>
> >
>
>
> >
>
>
> >
>
>
>
>
>
>
> >
>
> >
> On Tue, Mar 26, 2013 at 1:56
> PM, hol at gaskill.com>
> wrote:
> >
>
> >this
> talk about imports and exports always reminds me
> of energy flow
> >
>
> >
> compare 2011
> >
>
> https://www.llnl.gov/news/newsreleases/2012/Oct/images/25306_LLNLUSEnergy2011650.jpg
> >
>
>
>
> >
>
> >
> with 2002
> >
>
> http://www.hubbertpeak.com/us/images/us_energyflow2002.jpg
> >
>
> >
> fascinating
> >
>
>
>
> >
>
>
>
>
> >
> _______________________________________________
> >
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> >
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> >
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> >
>
> >
>
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> >
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> >
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> >
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>
> >
>
>
>
> >
>
> >
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>
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