| Your
source for super savings on high pressure sodium lamps and
fixtures. |
| |
| |
| |
| |
| |
|
| |
| BASIC INFORMATION |
 High Pressure Sodium Lamps were developed
and introduced in 1968 as energy-efficient sources for exterior,
security, and industrial lighting applications, and are
particularly prevalent in street lighting applications.
Due to their high efficiency and long life, today's HPS
lamps are also suitable for many interior applications,
particularly where color rendering is not a crucial concern.
High pressure sodium lamps are the most efficient artificial
light source with almost 29% of the energy used by the lamp
producing light.
|
| HPS
APPLICATIONS |
HPS
lamps, unlike most metal halides, do not require enclosure
except to prevent moisture from accumulating on the lamp.
This makes HPS lamps especially easy to use in many fixture
types. Moreover, the virtual insensitivity of HPS lamps
to burning position means that fewer lamp types are needed
as compared to metal halide.
Lamp color temperature in HPS lamps does not vary much.
While the "deluxe" HPS lamp has a relatively high CRI (65)
for HPS technology, its color temperature of 2100-2200K
is not much different from standard HPS, which varies between
1900K and 2100K. All HPS lamps except "white" sodium appear
a golden-pink color, and are not recommended for non-industrial
interior lighting.
HPS lamps are offered in sizes ranging from 50 to 400 watts.
Efficacies are between 70 to 120 lumen/watt (including ballast),
increasing with wattage. Electronic ballasts, said to be
under development, could provide a small increase in system
efficacy. |
| |
| |
|
