Air quality

In regard to Sean Harrison's inquiry about air quality in storage:
the usual filtration methods for this have been written about
elsewhere (activated charcoal plus potassium permanganate, and
particulate filtration to 95% dust spot are common) but the caveats
should be mentioned:  that recirculating air should be filtered as
well as make-up air, that make-up air be kept to a minimum, that
filters have to be placed where they can be reached easily, and that
forcing air through filters requires bigger fans and therefore more
energy than without filtration, so many places don't want to do it.
Also, as with any air circulation system, the placement of ductwork
and vents vis-a-vis large storage units needs to be carefully
planned.  Proper monitoring and maintenance is crucial--this is
another part that often gets left out.

I would suggest that you consult with someone with real experience
in this matter;  the use of regular engineering and/or architecture
firms can sometimes lead astray.

B. Appelbaum

                                  ***
                  Conservation DistList Instance 12:7
                  Distributed: Thursday, July 2, 1998
                        Message Id: cdl-12-7-008
                                  ***