2006-08-21 05:04:53 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Lux level = total light output (lumens) / area (square meters)
total light output = lumens per fixture * number of fixtures
Therefore
number of fixtures = (Lux level * area) / lumens per fixture
You need to look up the manufacturer data for your light fitting to get the lumens per fixture. For example a standard 100W incandescent bulb is around 1400 lumens.
Example:
Desired lux level = 175, Room size = 16 m2
Fixtures = 175 * 16 / 1400 = 2
So you'd need 2 100W incandescent light fittings.
2006-08-21 05:29:25 · answer #1 · answered by Graham I 6 · 1⤊ 0⤋
wattage divided by square footage.. theres a free prog at download.com, and it depends on what youre growing...
2006-08-21 05:12:20 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Contact your supplier, if they thing youre gonna buy of them they will work it all out for you.
2006-08-21 05:10:02 · answer #3 · answered by junio130 3 · 0⤊ 0⤋
are we not going to consider the height of the room?
2014-11-28 19:35:31 · answer #4 · answered by Philip Ian 1 · 0⤊ 0⤋
i dnno
2006-08-21 05:12:10 · answer #5 · answered by Anonymous · 0⤊ 0⤋