Re: 24x7 Support Strategies

On Thu, 14 Jun 2007, Patrick Giagnocavo wrote:

> Vegetable oil can degrade much faster than diesel.
> 
> What you really want is a large pond at the top of a
hill, and another
> large pond at the bottom of the same hill.
> 
> When utility prices are low, pump the water to the
upper pond.  When
> power is needed, have your installed hydropower setup
allow water to
> flow through the turbine from the upper pond to the
lower pond.
> 
> In a city, a very large tank located at the top of the
building and an
> equally large one in the bottom with a pipe between the
two, should
> suffice.  Remember that the "head" or height
difference is a large
> factor in determining how much power a hydro setup can
generate.
I just wanted to give a little bit more perspective on
above: 1 liter of 
diesel fuel contains approx 10000WH. 

1 liter of water pumped 100 meters up has a potential energy
of .272WH

It takes a *lot* of water to provide a measurable difference
for a 
datacenter of any significant size...

-alex

OK guys..... I get it...... you are not cert fans. I did
mention that
when I interview candidates, the most knowledgeable gets the
position.

Did I mention that I can take an engine or transmission
apart, then put
it back together? ( or have it on a bench unseen and
reassemble it...
just a hobby ) We got way off track here.... I'll end this
thread
now.....

Enjoy !

Regards
BF

-----Original Message-----
From: owner-nanogmerit.edu [mailto:owner-nanogmerit.edu] On Behalf Of
Alex Pilosov
Sent: Thursday, June 14, 2007 8:28 PM
To: Patrick Giagnocavo
Cc: nanognanog.org
Subject: Re: 24x7 Support Strategies


On Thu, 14 Jun 2007, Patrick Giagnocavo wrote:

> Vegetable oil can degrade much faster than diesel.
> 
> What you really want is a large pond at the top of a
hill, and another
> large pond at the bottom of the same hill.
> 
> When utility prices are low, pump the water to the
upper pond.  When
> power is needed, have your installed hydropower setup
allow water to
> flow through the turbine from the upper pond to the
lower pond.
> 
> In a city, a very large tank located at the top of the
building and an
> equally large one in the bottom with a pipe between the
two, should
> suffice.  Remember that the "head" or height
difference is a large
> factor in determining how much power a hydro setup can
generate.
I just wanted to give a little bit more perspective on
above: 1 liter of

diesel fuel contains approx 10000WH. 

1 liter of water pumped 100 meters up has a potential energy
of .272WH

It takes a *lot* of water to provide a measurable difference
for a 
datacenter of any significant size...

-alex