I'm working in a produce/freezer warehouse. The owner has been complaining of dim fluorescent lights. They do look dim to me. They are mag. ballasts (T12). I'm planning to change them out to electronic ballasts with T8 bulbs. Does anyone know if this should do the trick or is there something else? The room has a temperature of 35 Deg. F.
Or, you could do like Wal-Mart and put in LED lighting... Less energy consumption by the fixtures, plus the savings of not having to recover for the heat generated by the fixtures (probably not discernable in a large facility anyway). Your customer has bottomless pockets, right?
All the new t8 stuff is zero degree ballasts as supplied. But if you are going to use floresents in a freezer you will need HO type floresents, like the sign people use. These do well in very cold temperatures
What you might want to try as well is putting a " shatter shield" around the bulb as well to try and trap heat around the tube and block cold drafts.. It might help a bit no matter what type of tube you are using.
We are now installing electronic ballasts here in Edmonton for T-8's and T-12's as a normal standard operating procedure and they seem to work very well down to about minus 20 C. (about zero F.) without noticeable dimming. Sometimes they do take about 5 to 10 seconds to brighten up to normal at -20C. but using the e-ballasts seemed to solve a lot of issues for us here. The only place we put them now is in unheated garages and outbuildings however, so there is little or no thermal cooling from air movement as might be seen in an exposed location. We don't put them outside where they might get environmental exposure with wind or air movement so I can not comment on that part.