A: The relationship between initial wattage and delivered light output (fc) is not linear. In other words, just because a fixture consumes more electricity does not mean it will necessarily produce more light. There are a number of reasons for this, including:
- Heat: The lamp used in HID lighting, beyond changing the elemental gas employed, has not changed significantly from the bulb designed by Edison in 1898. The HID lamp heats a metal filament enclosed in gas to generate light. Therefore, much of the electricity consumed by a HID is used to generate heat, rather than light. This is why a person cannot touch an operating HID bulb.
- Vibration: An HID lamp employs a magnetic ballast, which is essentially a coiled wire, to control the lamp. Therefore, as the current flows through the ballast, it causes the coil to vibrate; in fact the humming associated with HID fixtures is the result of this vibration. Therefore, in addition to losing energy due to heat loss, a 400 watt fixture loses significant energy to vibration. In fact, a typical HID converts 65% of the electricity it consumes into heat and vibration and only 45% into light. Fluorescent, however, converts 10% of the electricity it consumes into heat and vibration and converts 90% of the electricity into light output.
- Design: In addition, to being substantially more efficient than traditional HID fixtures, the of the MX and MP fixtures play a major role in its effectiveness in delivering more light than a HID. The highly specular reflector focuses all of the useable light on the working space. Also, due to refection off the floor, walls, and existing machinery, the fixtures provide significant uplighting without intentionally designing light loss into the fixture to light the ceiling. However, if more uplighting is desired, changes to the fixtures can be made to acquire this. Moreover, since as fluorescent is a plane - rather than a point - light source, the light is spread more evenly through a facility than with traditional HID's. This even flow reduces shadowing and light puddles, and therefore significantly improve the overall light levels in a facility.
A: Lighting retrofits can be quite overwhelming for a person. Below is a easy guide to replacement:
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| There are many more configurations that can be used, this guide is to give you an example of these. Talk to your YES Representative to find the best fixture for your facility. Or, you can e-mail YES here! | |
A: Typically, under 25' a T8 fixture will give excellent lighting. Over 25', a T5 fixture is recommended. The reason for this is a T5 is a higher intensity fixture and the light will reach the floor better than the light from a T8 bulb.
A: When a fluorescent fixture is properly specified and placed in a warehouse facility (i.e. row heights and shelve contents taken into consideration), Williams' product suite has performed exceptionally well in these environments. The spread of light given off by the fixture means more even distribution of light through the facility and significantly better uplighting than associated with traditional HID fixtures. Moreover, the light puddling effects associated with traditional HID fixtures do not plague the fluorescent fixtures; therefore, shadowing and dark spots, are significantly reduced in the facility, allowing operators to better see the products they are picking.
A: Starting a little over 3 years ago, YES saw the opportunity to bring another service to their customers. Along with selling new and used equipment, parts, warehousing products, material handling products, service on all makes and models, having reliable rentals, and offering training; YES realized that the same customers that purchase these products will also be interested in saving money and brightening their workspace. YES and the manufactuer work in a close relationship to give YES customers the best and brightest lighting products in the industry.
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