Re: Two fans in series better than one larger one?

I suspect you are thinking of the ex army man's greenhouse?
o Solar powered fan to push heated air down a tube
o Bottom of tube has an insulated box of glass
o Air percolates through the glass, heating it up
o At night the fan runs on battery, pumping heat out

Your design has several (worse) shortcomings.
o Stone thermal store has low surface area to air
o It would work well in summer - when least needed
o It would work poorly in winter - when most needed

So I suggest spending the money on insulation, walls, ceiling and
importantly the floor area too.
Otherwise any heating you put in is soon lost - particularly from any
solar store.

For acoustics, there should be no obstruction at the intake of a fan
equivalent to 100-150% depth. The ideal figure being 150% with 100%
the more practical figure at least where PCs are concerned. Avoiding
back-to-back except in server environments where noise is immaterial &
density is material.

A lot of insulation and a tube heater with thermostat can do very
well.
Smiths thermostats are now digital, tube heaters are cheap & various
outputs.
If you have Economy 7 that can be useful for boosting overnight, with
a simple fan heater during the day with runback timer if you wish
(Dimplex VE range, adjustable from 5mins to 1-2hrs or so).

Suppliers of polystyrene or better kingspan/celotex (more insulatory
value for the same thickness).

Thermal store (ground) works well with piping & *heatpump*, but a lot
of piping is required.
Nothing to stop you rigging up one of those, boosting the CoP air-to-
air efficiency in winter.
--
DB.
.

Relevant Pages

  • Re: Two fans in series better than one larger one?
    ... Bottom of tube has an insulated box of glass ... Air percolates through the glass, ... At night the fan runs on battery, ... A lot of insulation and a tube heater with thermostat can do very ...
    (uk.comp.homebuilt)
  • Re: Its Hot Upstairs More Insulation or Attic Fan?
    ... Each bedroom has two walls and of course the ceiling that are adjacent ... so I can add insulation to both walls and ceiling. ... Will either the fan or additional insulation ... the fan will get rid the attic of superheated air. ...
    (alt.home.repair)
  • Re: Indoor Shooting and Lead Exposure
    ... # # Don't you remember all news about Chinese toys imported to the U.S. ... just installing a strong fan won't do it. ... Post 1977 paint mfrs. ... only if there is an additional 900 CFM of air is introduced into the ...
    (rec.guns)
  • Re: Is a ZEN 300 badly designed only or the FSP is a bad designer and does not notice "small" malfun
    ... crackling sound 10 times rarer, but still makes the monitor screen ... Perhaps a Seasonic with a fan, ... There should be an air intake vent, located near the disk drive, so ... which was accompanied with a slight monitor screen image trembling. ...
    (alt.comp.hardware.pc-homebuilt)
  • Re: Vasif may have not corrupted my CPU after all.
    ... The one in the 550W PSU had ground to almost a dead halt even at ... the 350W PSU there is lots of air. ... PSU since it had its fan facing below over the processor. ... replacement of the replacement went soon after that. ...
    (soc.culture.greek)