High Pressure Sodium Lights Energy Consumption

The efficacy in lumens per watt for low pressure sodium lights is 60 to 150.
High pressure sodium lights energy consumption. The downside is that there are very few options outside the narrow range to choose from. They are available in a range of wattage. When it comes to high pressure sodium lights vs led energy consumption led lighting has become the industry standard. High efficacy that is easily comparable to led lights.
A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist. Hps light costs differ based on the particular fixtures but are cheap compared to leds. Additionally while leds do not produce radiant heat with the light that is emitted there is heat generated by the diode itself.
For high pressure lights it is 50 to 140. In fact led bulbs use between 40 75 less electricity than a hps fixture. High pressure sodium lights tend to have a lifespan averaging 24 000 hours. Low pressure sodium lights produce the greatest amount of light per watt of energy consumed.
High pressure lights are slightly less efficient. 50 w up to 1000 w. The reason that they are used is that they give a lot of light for the amount of power they use. 100 watt high pressure sodium 1 100 138 150 watt high pressure sodium 1 150 188 200 watt high pressure sodium 1 200 250 250 watt high pressure sodium 1 250 295 400 watt high pressure sodium 1 400 465 40 watt mercury vapor 1 40 50 50 watt mercury vapor 1 50 74 75 watt mercury vapor 1 75 93 100 watt mercury vapor 1 100 125 175 watt mercury vapor.
Led area lights are top of the line bulbs. Low and high pressure sodium lights are well known for their warm yellow glow cct values around 2200k. This can take up to 20 minutes in some cases meaning your lights must be turned on at least 20 minutes prior to use to ensure maximum illumination. I also like the soft light they produce.
Hps vs led energy savings. Like metal halides high pressure sodium lights are omnidirectional which wastes light and makes them less efficient. They lose roughly 15 of their heat emissions which adds to their inefficiency. Sodium based lights require a warmup period.
Initially leds will cost more to install but the energy savings low maintenance costs and lifespan puts them ahead of hps lights. High pressure sodium fixtures are not as energy efficiency as leds. Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used. High pressure sodium lights range between 5 10.