Just wondering if you have factored in energy losses in the tromp and
bubble pump due to turbelence? And the different densitys of the hot
and cold water and hot and cold air? This means that your cold water
column will be lower than your hot water coulmn.
And heat exchangers never transfer all the heat without outside
energy input.
In manitoba, people already use the earth as a heat sink for the heat
of the summer (Using ordinary heat exchangers, I believe, and pump
the heat into the ground). They then extract some of it in the winter
to keep their houses warm. This works because the temperature
fluctuation there is so severe from summer to winter. The energy
required to move the heat costs less (because it is less) than simply
buying in heat from the electricity company.
Brian
--- In pulserpump@yahoogroups.com, "Archimedes
Submerged" <archimerged@...> wrote:
>
> > Ask the designer/author why if it is such a wonderful
> > machine that he has not built one to demonstrate its viability.
>
> It is a design project, not a working machine. Do you doubt it
would
> work given a larger deltaT? (just curious about where your
objections
> lie).
>
> > Advocacy talk is cheap, a genuine working example is hard to
refute.
>
> This is not advocacy. This is scientific curiosity and
imagination. Why
> can't a machine use the available temperature differences? Are you
> really sure one can't be designed that works? There is no
fundamental
> principle preventing it. A typical design (no doubt including this
one)
> fails because of _avoidable_ losses, not theoretically unavoidable
effects.
>
> The trick is to figure out a way to avoid the losses without
incurring other
> losses in exchange.
>
> > The bubble pump air compressor described in posts 41 & 42
incorporate
> > some of the ideas of the hydraulic air compressor at Ragged
Chutes but
> > is an entirely different beast supposed to run on diurnal
fluctuations
> > of ambient air temperature. It will never go!
> >
>
> The diurnal fluctuations are a _design goal_, not a statement that
this design
> actually works. Nowhere is it stated that the design works such
low delta T.
> So your news is no news at all.
>
> The goal is to think about various machines and learn where they go
wrong.
> In the case of the bubble pump / trompe, the problem is that the
bubbles need
> to be very tiny so that they move with the water. But such tiny
bubbles take a
> long time to separate from the water when this is needed.
>
> If you use larger bubbles, a larger delta T is needed because of
losses due to
> bubbles lagging behing the water in the trompe and leading the
water in the
> bubble pump.
>