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Bio-Mass Cooling......

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Posted by martywittrock on February 10, 2004, 7:08 pm
I would like to know if there is anyone out there who has considered
bio-mass cooling.  If there is anyone that knows of this innovation,
let's start a thread on this subject.  I'm interested in knowing more
about how practical this is for cooling up to 2000 sqft.

Posted by Arnold Walker on February 12, 2004, 4:58 am

You mean radiate cooling .....from biomass.
If so,already do that .....also called freeze drying and/or flash
freezing.with steam eductors and bio mass fired boiler.
Campbell's and most canneries have used that method for the past 30-75 years
to cool vessels of soup or??? down before it spoils.
May need to clarify your statement.

Posted by martywittrock on February 12, 2004, 11:50 pm
 Clarifying my original message:

There is some 'buzz' in the alternative heating and cooling industry
that corn burning could be used in terms of bio-mass cooling -
something a'kin to how propane refrigeration works (by boiling a weak
ammonia/water solution) to cool compartmented airspaces.

What I was wondering is if anyone has been doing any research toward
that end as an alternative to home air conditioning?  Although ammonia
is highly toxic to be put into that kind of service (for the size of
an airspace that a typical home has - 2000 sqft. or more) and that it
may not be practical to implement, I was wondering if there is another
(safer) alternative using corn burning as the heatsource for a similar
cooling strategy (again, like propane refrigerators use to remove
heat) but on a much larger scale.

This topic is 'geared' toward alternative home cooling for typical
homes - but not using Earth temperature to obtain natural cooling
(like 'burm' housing would be).  I'm looking for Bio-mass cooling
using renewable resources.

.....So, who's doing the research?

Posted by sylva on February 13, 2004, 9:08 am
 On 12 Feb 2004 15:50:18 -0800, martywittrock@juno.com (martywittrock)

These thermal absorbtion units typically have a Coefficient of
Performance (CoP) of <0.7, i.e. they need 1kW(t) to pump 0.7kW(t) from
the cold (coolbox) side to the hot (ambient) side. This is getting on
for an order of magnitude worse performance than the motive power used
in a compressor device, though this neglects the thermal to motion
performance of the prime mover.

Typically this process is used to make use of waste heat, I know of
examples using the waste heat from diesel engines in both fishing
boats and a combined heat and power district heating scheme.

To increase the utility of the energy in the biomass it might fit in
with a gasifier chp system.


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