High Bay Lighting Using LED VS Metal Halide
Whenever a large indoor space needs to be illuminated, high bay lighting is usually the appropriate solution to it. Consider space like the warehouse, storage facilities, commercial assembly halls, large department stores are typically cover both vertical and horizontal spaces. High bay lighting fixtures typically hang from the ceiling via hooks, chains or fixed to the ceiling directly.
Historically, various types of lighting technology were used in the warehouse and industrial areas when high bay lights were required. Some of the most common lightings include metal halide (MH). high-pressure sodium (HPS) and fluorescent. Although each of these bulbs has their merits, industrial Light-emitting diode (LEDs) lightings outperform in many ways.
1. Operating Life
The operating life of a typical Metal Halide bulb is estimated to be around 22,000 hours. Larger bulbs, like 1000W Metal Halide, are around 15,000 hours. For LED, like LED High Bay Premium, are more than 50,000 hours.
2. Efficiency (lumens/watt)
(Lumens of light per Watt of energy | |||
(Estimated 2600 Hours) | |||
To calculate the efficiency, we will need to take the total lumens produced and divide it by the total watts consumed. From the table above, the total watts consumed of a typical metal halide high bay bulb is 400W. So to calculate the lumen efficiency for a metal halide bulb: 20,000 lumens / 400W = 50 lumens/watt.
By comparing the metal halide with the standard 200 watts LED High Bay: 20,000 lumens / 200 watts = 100 lumens/watt. Therefore, using LED is more efficient than metal halide bulb.
3. Energy Savings
From the above discussion, a 400W metal halide produces around 20,000 lumens. If we would use a standard LED to replace the metal halide, we would only need 200W. By changing the metal halide to a standard LED, we have a 50% savings in energy consumed to produce the same amount of light.
4. Savings on Maintenance
With the long lifespan of LED, customers would have lesser bulb replacement as compared to the metal halide bulb. Customers who are using the metal halide bulb has a high maintenance cost, such as installation height, because of the frequent bulb replacement.
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Matt Burke
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