barn reno - Lighting choice for high vaulted space?
The center aisle of our old barn is very tall and dark. There are currently three incandescent bulbs spaced on the side wall, and it's sufficient to move around and do basic stuff, but it's dim and gloomy. We're putting in a crushed stone floor in a cpl weeks, so having a light colored floor will help a little, but I need to figure out the best kind of o'head fixtures to install. If anyone has expertise in this area, I'd be grateful. I've been reading up on high-bay lighting, but in the end, I am still stumped on how many and what kind of fixtures I should put in (metal halide? fluorescent? T5, T8? what is he right wattage/output?).
I want the lighting to be good enough for a vet visit. Not surgery :) but want general, ambient lighting so it's not like the topside of the horse is shiny bright but everything else is in pitch-dark shadow.
Here is a picture of the center aisle, before we had it cleared it out. There are two cross beams in this space, both about 20ft high (in the picture, one of the beams isn't visible b/c it's over the head of the photographer).
The space is 19ft wide by 30ft deep. Very tall overall ceiling height, not sure exactly how tall. There will be 2 stalls built in the back of this section. The o'head beam that you can see sits right where the front wall of the stalls will be. The other beam is directly over the area I'll be using to groom, pretty much centered in the grooming space.
For the stalls, I'm thinking two fixtures mounted on the back beam and aimed at an angle down into each stall. I worry that a regular shop light kind of fixture that's pointed straight down would just be washing the stall wall with light and not the stall interior.
Any suggestions on what kind of fixture?
For the grooming area in front of the stalls, I'm thinking two 4ft fluorescent fixtures spaced evenly across that beam. Overkill? Not enough output for the space? I'd prefer to mount them on the beam directly and not to hang them because when the barn door is open they'd swing in the wind.
We have very cold winter temps (ten to 15 below zero is usually the worst we get). I'm fine with the lights taking a a little bit to warm up, as long as eventually they'll hit full "strength". Any advantage betw metal halide and fluorescent in this regard?
Thanks for taking the time to wade through this!