LED lamp replaces 1000 watt metal halide lamp
In the past, the first lighting option contractor and electrical professional considered it to be a metal halide whenever it needed to illuminate commercial space or large indoor spaces. But these lights consume a lot of power and don’t have a long life, which is why LED lighting is so popular.
Many business and building managers are now turning to LED lighting to reduce energy consumption and save money. One question we have been asked is, “Which LED lamp is the perfect replacement for a 1000 watt metal halide lamp?”
LED bulbs usually have three important specifications: Watts, Lumens and Kelvin. Watts are used to measure the energy consumption of LEDs, while Kelvin measures color temperature. Lumens are the most important function, so when considering replacing a metal halide lamp with a led light, you can’t make a decision based on watts. Instead, you need to make decisions based on the amount of lumens you need. Once you have the lumens of the lumens, the luminaires that produce these lumens determine the required wattage.
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What exactly is Lumen?
In the eyes of laymen, lumens are a measure of the total amount of visible light emitted by a light source. Lumen means brightness, not watt. You should pay attention to HID lighting when replacing it with LED technology. Watts are important, but they measure energy consumption, not light output.
When replacing an existing fixture (or the entire system), you need to know the lumen output of each fixture. Suppose your metal halide lamp outputs 100,000 (initial) lumens per 1000 watt bulb, at least for new installations. So you don’t have to think “I need 1000 watts of LED instead of 1000 watts of metal halide”, but I need to consider “I need an LED that can replace 100,000 lumens.” This way, you can forget how many watts the lamp has and focus only on the amount of lumens that can be output and make sure it meets your lumen output requirements.
Lumen depreciation and L70
100,000 lumens may look very bright. it is. However, the bulb is designed for high initial output because the metal halide has a fairly high lumen depreciation. It is not uncommon for metal halide bulbs to lose 50% of their lumens in half-life.
L70 is a term used to define the time it takes for the LED module’s lumen output to reach 70% of the initial output.
This means it will reach 70% of its lumen output in about 5,000 hours. Therefore, although the specification claims 100,000 lumens, it will not reach 100,000 lumens in the long run. On the other hand, LEDs keep their lumens very good.
You’ll notice that the LED’s L70 times are 50,000 and 100,000 hours instead of 5,000 hours like a metal halide bulb.
Metal halide loses light due to reflection
LED lights are directional. This means they discharge in a specific direction. Metal halides are omnidirectional and discharge in all directions. To avoid minor waste, use a reflector to redirect the light and focus it to a specific area.
Since the reflectors are never 100% effective, some of the lumens bounce off them and return to the fixture, causing lumen loss. Studies have shown that it is possible to lose up to 30% of lumens. So, in fact, a metal halide bulb that should emit 10,000 lumens can only emit 7,000 lumens.
There are three things that determine light quality: lumens, Kelvin, and CRI (Color Rendering Index). Now that we have discussed lumens and Kelvin, let’s talk about CRI. CRI measurement lights can reveal the true color of an object. LEDs typically have high CRI ratings, and customers tell us that 20,000 lumens of LEDs are brighter than other 6,000 lumens (such as HPS), which is not uncommon.
Perceived light: clear vision and squint lumens
Lights usually produce two different types of lumens: clear lumens and darksight lumens. Brightsight lumens are lumens detected by devices similar to cameras. Lens lumens are lumens detected by the human eye.
LEDs produce light in these spectra, which means that the light perceived by the LED is the light we use. It is rare to see an LED lamp that produces an infrared or ultraviolet spectrum. These wavelengths are invisible to people, so they have no value to us from a visual perspective.
The correction factor is typically applied to the clear cavity reading to determine the available light produced by the source (dark lumens). This factor was developed by scientists to establish commonalities between different light sources because two different bulbs with similar lumen readings can have very different available light outputs. The correction factor adjusts the actual value of the cavity downward or upward from the photometric cavity of the advertisement.
This factor usually reduces the lumens of certain HID lamps and increases the lumens of LED lamps (by 1.7 or more). This means that sneak illuminating LED lights are more beneficial to humans.
The content stated above mainly includes three aspects:
1. Metal halide bulbs are very bright at new times, but their brightness is reduced by 50% after 6 months of use.
2. LED lights produce directional light and are very effective. Waste without lumens
3. LED lights are of high quality and you need less lumens for optimum brightness
So how many LED lumens are enough?
Photometry is the most accurate way to determine the exact amount of lumens required. Based on years of experience, we know the amount of lumens required for indoor and outdoor applications:
•Indoor: 45,000 to 55,000 lumens (depending on application and installation height)
• Outdoor: 40,000 to 60,000 lumens (depending on application and installation height)
When you look for LEDs that are equivalent to 1000 watt metal halide lamps, you will find 100 lumens or more bulbs. High quality bulbs produced by reputable manufacturers can emit 150 lumens or more. This will allow you to reduce the wattage usage of each fixture by 2-3 times, sometimes 4 times, which will prove that you can save a lot of energy when you start talking about replacing multiple fixtures.
But what does “replace” include?
When replacing metal halides, there are two options: modify or replace a full set of fixtures. Modifications simply mean replacing the metal halide bulb with an LED bulb, and replacing the full fixture means replacing the bulb and the enclosure (lamp).
The status of existing fixtures will determine which option is right for you. If the fixtures are new or in good working condition, there is no need to replace them – just get the conversion kit. If they are worn or worn, replacing the complete set is the only option.
How efficient is the LED in the retrofit kit?
A common misconception is that the LEDs in the retrofit kit are not as good as in the new fixtures. This is not the case at all. The life of the HID replacement kit is as long as the new equipment. Don’t replace a functioning luminaire because something you may have heard is not true.
Our retrofit kits are backed by a 10-year warranty and are mounted in a sealed fixture in the hot and cold area. No one has ever failed.
Retrofitting will always be cheaper because the installation is easier and the process does not require as much material as a complete replacement. If you do not need to replace an existing fixture, always choose to modify it.
Please visit our website or contact our support staff for more information, YOULUMI’s expertise can meet your needs.
Post time: Nov-29-2018