Discussion:
Free energy from air moisture
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Dave
2022-12-28 16:00:51 UTC
Permalink
Free energy from air moisture

Who doesn't like free energy in the winter- energy you don't need to pay
for? Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.

So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).

https://www.engineeringtoolbox.com/water-properties-d_1573.html
say 2 400 000 x 0.15 = 360 000 J , getting 100W from the water at 3.6MJ
/kWh

It would be nice to reduce this 200W by 90%, so could use a battery
powered fan,and this stay a bit warmer when the weather is gloomy.
Remember this isn't for proper continental winters, when you'd have to
retreat to the citadel (a small well insulated room).

It is also noted that air pressure reduces over aerofoils, and there's
the venturi effect, so how easy is it to have a low energy dehumidifier
without a compressor, or something like calcium chloride? There is
beetle which gets its water by doing something like this, but I'm not so
much after the water (since it's foggy or wet in the London area six
months of the year).

https://www.science.org/content/article/could-desert-beetle-help-humans-harvest-water-thin-air

No need to worry about noise yet, there are always solutions.

Summary - with a good supercomputer model and a big fan, and some fancy
material should get a 400%+ efficient heater without anything outside,
and get a drier house. Traditionally fluid and aerodynamics like a
static state, but a chaotic solution may be best, e.g. eddies and pulses.
Jim Pennino
2022-12-28 16:31:13 UTC
Permalink
Post by Dave
Free energy from air moisture
Who doesn't like free energy in the winter- energy you don't need to pay
for? Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.
Yeah, it would be nice if such were possible, which it isn't.

As the output of a air condenser is cool water at a temperature below
the ambient, I fail to see how the cool water could be a source of heating.
Post by Dave
So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).
The amount of water recovered is not related to the energy efficiency of
the conversion process.

An energy effiency greater than 100% means energy is being created
somehow, which would be a violation of the conservation of energy, which
is only possible with some sort of nuclear reaction converting mass into
energy such as a fusion reactor.

<snip remaining impossible babble>
Volney
2022-12-28 17:07:35 UTC
Permalink
Post by Jim Pennino
Post by Dave
Free energy from air moisture
Who doesn't like free energy in the winter- energy you don't need to pay
for? Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.
Yeah, it would be nice if such were possible, which it isn't.
As the output of a air condenser is cool water at a temperature below
the ambient, I fail to see how the cool water could be a source of heating.
Post by Dave
So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).
The amount of water recovered is not related to the energy efficiency of
the conversion process.
An energy effiency greater than 100% means energy is being created
somehow, which would be a violation of the conservation of energy, which
is only possible with some sort of nuclear reaction converting mass into
energy such as a fusion reactor.
<snip remaining impossible babble>
If you expel the cooled condensate/air, you get more heat energy than
available from the electricity directly. Voila! The heat pump!!

Not "free" energy, of course, but exceeding 100% of the heat value than
from electricity alone. The energy isn't created but is removed from the
expelled air/water.
Dave
2022-12-28 17:29:16 UTC
Permalink
Post by Volney
Post by Jim Pennino
Post by Dave
Free energy from air moisture
Who doesn't like free energy in the winter- energy you don't need to pay
for?  Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.
Yeah, it would be nice if such were possible, which it isn't.
As the output of a air condenser is cool water at a temperature below
the ambient, I fail to see how the cool water could be a source of heating.
Post by Dave
So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).
The amount of water recovered is not related to the energy efficiency of
the conversion process.
An energy effiency greater than 100% means energy is being created
somehow, which would be a violation of the conservation of energy, which
is only possible with some sort of nuclear reaction converting mass into
energy such as a fusion reactor.
<snip remaining impossible babble>
If you expel the cooled condensate/air, you get more heat energy than
available from the electricity directly. Voila! The heat pump!!
Not "free" energy, of course, but exceeding 100% of the heat value than
from electricity alone. The energy isn't created but is removed from the
expelled air/water.
I was thinking about one which made ice, e.g. a free kWh for every 10kg
of ice you make, but then people in apartments might throw it out the
window.
Jim Pennino
2022-12-28 20:30:17 UTC
Permalink
Post by Dave
Post by Volney
Post by Jim Pennino
Post by Dave
Free energy from air moisture
Who doesn't like free energy in the winter- energy you don't need to pay
for?  Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.
Yeah, it would be nice if such were possible, which it isn't.
As the output of a air condenser is cool water at a temperature below
the ambient, I fail to see how the cool water could be a source of heating.
Post by Dave
So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).
The amount of water recovered is not related to the energy efficiency of
the conversion process.
An energy effiency greater than 100% means energy is being created
somehow, which would be a violation of the conservation of energy, which
is only possible with some sort of nuclear reaction converting mass into
energy such as a fusion reactor.
<snip remaining impossible babble>
If you expel the cooled condensate/air, you get more heat energy than
available from the electricity directly. Voila! The heat pump!!
Not "free" energy, of course, but exceeding 100% of the heat value than
from electricity alone. The energy isn't created but is removed from the
expelled air/water.
I was thinking about one which made ice, e.g. a free kWh for every 10kg
of ice you make, but then people in apartments might throw it out the
window.
To heat the inside, the place where ice would form would be on the
outside.

If ice forms, the heat exchanger basically stops working.

Jim Pennino
2022-12-28 17:36:56 UTC
Permalink
Post by Volney
Post by Jim Pennino
Post by Dave
Free energy from air moisture
Who doesn't like free energy in the winter- energy you don't need to pay
for? Anyway in Britain, it is often a bit chilly and wet, e.g. 10C,
with moist air, 90% RH, so it would be nice to condense this moisture
for free low grade heating.
Yeah, it would be nice if such were possible, which it isn't.
As the output of a air condenser is cool water at a temperature below
the ambient, I fail to see how the cool water could be a source of heating.
Post by Dave
So far have used a dehumidifier, which at about 200 Watts, generates
about 150ml an hour, meaning using the dehumidifier is about 150%
efficient (as long as I'm not deliberately evaporating).
The amount of water recovered is not related to the energy efficiency of
the conversion process.
An energy effiency greater than 100% means energy is being created
somehow, which would be a violation of the conservation of energy, which
is only possible with some sort of nuclear reaction converting mass into
energy such as a fusion reactor.
<snip remaining impossible babble>
If you expel the cooled condensate/air, you get more heat energy than
available from the electricity directly. Voila! The heat pump!!
Not "free" energy, of course, but exceeding 100% of the heat value than
from electricity alone. The energy isn't created but is removed from the
expelled air/water.
Yes, I know.

The point is that to heat with a heat pump, the hot side will be in the
space to be heated and the cold side, where the water would be
condensing, will be outside.
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