Sarah -

The parameters of adding humidification to an existing system depend on many factors - the space(s) to be humidified and what the appropriate RH ranges are (the humidification needs for a museum in the southwest would differ greatly from Maine or Seattle). Much depends on the collections involved and also on the limits of the space(s) and engineering of the existing HVAC system.

To get specifics you really should bring in a consulting conservator or museum environmental engineer. Many vendors will try to oversell you a system beyond your needs and a system that hasn't been carefully assessed may not be able to do the job.

Cheers!
Dave

David Harvey
Senior Conservator and Museum Consultant

On Tue, Jan 10, 2012 at 11:27 AM, Sarah LeCount <[log in to unmask]> wrote:
Tis the season for questions about humidification!  Our institution has a large (5,500 sq ft) gallery often used for hosting travelling exhibits. Currently the gallery has heat and cooling systems, but nothing to control humidity. Due to the environmental needs of a wintertime exhibit, we are looking into adding humidification to the gallery on a permanent basis.  I have no idea what to look for in terms of droplet size, fan speed, dispersal . . . .      are there written guidelines out there anywhere?

Thanks!

Sarah

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