I'm in Iraq in a trailer with 24 people. We have no ventilation except the door and for security reasons we keep the door closed. Also there is a layer of dust on every surface, it is likely also in our computers and in our lungs. I don't think this is good for any of us but the Army guys are here for 14 months, 12 hours a day, that can't be good for them, you expect rockets but you don't expect lung problems.
We have about a dozen Unionaire IPX4 model TFD050A5HR units in the trailer, there are outdoor units attached by plumbing and wires. The indoor units are about 6 feet 3 inches tall, they only have a screen for a filter, enough to keep chuncks out of the works but they do nothing to reduce the amount of dust we breath.
I want to replace the screen with a filter, it looks like there is room. Ideally one of those washable metal mess electrostatic filters. Can someone tell me if such a thing exitst for this unit? If so where do I buy them? I found a place that will sell custom size filters but don't know if there is a standard size for this unit.
Also I would like to add ventilation. This thing sits on the floor, it looks like there are some knockouts on the bottom of it that would give a hole in the plastic bottom about 4"X4". Would it be ok to knock them out put a small duct on it to an outside box with a large filter and have it pull in air from outside? If so how would I regulate the ratio of outside to inside air? It is often 115F outside (I'm not kidding) so I don't think I can pull all outside air. I also don't want to break the fan by making it work too hard. I would also have to be able to stop the outside air altogether when the dust is bad, it is bad today.
If I know what can be done them I can get all the parts and try to convince the Colonel to get the maintenance guys to do it.
Thanks for any advice you can give me on this.