3M - Lighting Calculation

Is 3M™ Light Pipe really a breakthrough, particularly in cost terms? Key factors to consider are energy and maintenance. The overview below compares Light Pipe with traditional lighting and gas-discharge tubes.

To calculate your own projects and to show the economic advantages for you, 3M is preparing an on-line calculation module for this page. We would like to receive any comments you have relating to your lighting experiences. Please don't hesitate to contact us - your contribution would be greatly appreciated.

	Profile	50 x 50 space, 7m height, 500 LUX
	Lamp Type	HPS	MH	3M Light Pipe	4 lp T8 ele.
System Design	Lamp wattage watts per fixture Initial Lumens per Fixture Columns Spacing Rows Spacing Total fixtures Total watts Total initial Lumens Maintenance factor Maintained Lumens Room length Room width Room area watts/sq. m.	400 465 50000 7 6 8 6 56 26040 2800000 0,68 1904000 50 50 2500 10,42	400 455 36000 8 6,5 9 6,5 72 32760 2592000 0,55 1425600 50 50 2500 13,10	1000 1425 135000 2 6,5 7 2 14 19950 1890000 0,95 1795500 50 50 2500 7,98	32 130 11800 10 3 18 4 180 23400 2124000 0,85 1805400 50 50 2500 9,36
Energy Costs Energy Saving	Daily operation (hours) Days per week Hours per week Annual operating hours Cost per KWH Daily operating cost Annual operating cost Government Contribution Power Company Financing Total 5 Year Energy Costs
Maintenance Savings	Year 1 Year 2 Year 3 Year 4 Year 5

In the table there are no costs indicated for "Government financing energy saving" and "Company financing energy saving". This is because the governmental subsidiaries in Europe for energy saving systems installation and also for energy saving itself vary from country to country.