Lighting. Page: 7 of 17
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
200 150 100
LUMENS/WATTS50 0
0 4,000 8,000 12,000 16,000
NO. OF HOU RS20,000 24,000
' Dotted portion indicates the reduction in outpul due to ballast
' Range , bulb life depends on number of starts voltage and ballast condition
Figure 3: A conpurison of bulb li/> and light output for various types ojflighting.
tubes: 32-watt tubes provide the same light output as
the older 40-watt tubes. When replacing tubes, also
replace existing ballasts with the new high-efficiency
type. 'They save 25 percent over existing ballasts and
will last longer.
Replacing Incandescent Bulbs with
Fluorescent Adapter Units
Fluorescent adapter units are now available for use in
incandescent fixtures. Fluorescent adapters require no
rewiring (Figure 5). The adapter normally comes with a
ballast, starter and bulb and is available in both screw-
in and side-plug models. The fluorescent bulbs have a
life of 12.000 to 20,000 hours compared to the 750
hours of an incandescent bulb. and they provide three
to four times more lumens per watt than incandescent
bulbs. The adapter units work well in recessed and
semi-recessed fixtures. Remember to check the fixture
size before purchasing the unit to make sure it will fit.
Your savings depend on the number of hours per year
the fixture is used. For example, a 22-watt fluorescent
adapter costs about $25. Using it to replace a 75-watt
incandescent bulb operating 2000 hours per year at five
cents per kWh would result in the following savings:
$0.05 x (75W - 22W) x 2000 hr 30/yr.
kWh 1000 watts/ kWr n
\-.
Circular Fluorescent Incandescent P-1 Fluorescent
(61 Dia) 15Watt 60 Watt 13Watt (9')
(8."DDIa) 22WatI 75WatlI 18Watt(11)
(12' DIa) 32Watt = 100 Watt 27Watt (11")
Figure 5: A guide for replacing incandescent
bulbs with rompurabletltunrescents.5
LIGHTOUTPUT LIGHTINGTYPE BULB LIFETIME
INCANDESCENT
* MIN MAX*
FLUORESCENT
MERCURYVAPOR
METAL HALIDE
H.P. SODIUM
L.P. SODIUM
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
United States. Bonneville Power Administration. Lighting., report, September 1, 1992; Portland, Oregon. (https://digital.library.unt.edu/ark:/67531/metadc1317287/m1/7/?rotate=90: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.