All of this leads back to the fact that we do not have any good storage
technology for electricity. If we had good batteries, electric vehicles
would be practical, not just a toy for people who have money to waste
and little distance to travel, and we would have the ability to have
home power systems that could charge at an even rate and provide for our
peak power use locally giving a steady load to the grid.
You must live in a strange place.
I'm in Houston and all municipal water is gravity fed - that is, the
pressure is determined by the height of the water towers. There is no way
for any central location to know directly what the water pressure is
anywhere in the city.
I would think that if they know the pressure at one place, depending on
the elevation they should know what it is everywhere. The exception
being if there is a large demand in one area and not elsewhere, then
they would have a drop in pressure due to restrictions in the pipes.
That could happen. Last year, my power went out. After fussing a bit, I
stepped outside. There were FORTY TWO pieces of FIRE EQUIPMENT* in front of
my house dealing with an apartment house fire across the street. My
neighbor, who was trying to get home, circled the neighborhood looking for a
way in. She said that every time she got within about three blocks of the
fire, she spotted a pumper hooked up to a fire plug - we guessed wainting
for a call for more water.
Anyway, with all that commotion I didn't notice a drop in water pressure. I
do have, however, a humongous water tower about two blocks from me (and the
apartment house), so I guess if the fire was at the end of the service run,
there might be a drop-off.
* These 42 pieces of equipment (I counted them) included your ordinary
pumpers, a nozzle truck that could reach up to the 47th floor (the apartment
house was two stories), a visit-god ladder truck that could reach even
higher, supervisor cars, a cascade unit, special operations vans, and a
bus-looking vehicle resembling the one that takes seniors to the neighboring
Indian Casino for a day of gambling labeled "City of Houston Mobile Command
Center." I didn't bother counting the cop cars or ambulances.
On Wed, 16 Dec 2009 14:05:05 +0100, Nils Holland wrote:
I remember my parents used to have their old "electro-mechanical" washer
on a timer so it'd come on at night when the rates were lower. Then they
replaced it a few years ago with an expensive new all-electronic one -
which would just sit there dumbly when the power came on...
That is the downside, yes (my parents' one was in a utility room right at
the opposite corner of the house from where they slept)
I ran into that with a window A/C unit. During the summer I now leave
the window unit on high, but put a timer in series with the temperature
Maybe you can put a timer in series with the washer lid safety switch?
Ahh, theirs was a front-loader (otherwise that would be a very neat idea!)
There's probably still all sorts of safety switches in there that could
be tapped into, but it wouldn't surprise me for a front-loader if the
controller's not designed to flag an error condition and just halt if the
system detects a door open condition when the machine's "running" (after
all at that point it probably thinks the room's flooded :-)
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