A lot of factors play a role in determining how well solar bollards will perform at any given site. A solar lighting bollard should illuminate streetscapes, increase safety and heighten a site’s aesthetic appeal but many photometric elements will affect this. The features of site, the typical climate of the site and the placement of the bollards will contribute to how effectively a solar bollard will perform. To ensure that solar bollards are the right choice for your site, take moment to consider the following:
(How long will solar bollards last without being charged?)
Reliance Foundry’s solar bollards feature an intelligent microprocessor that is designed to always provide the proper level of autonomy for the area’s prevailing conditions. The microprocessor adapts light output and rations energy according to changes in weather patterns and it is so effective that, most regions, the bollards will have more autonomy in the winter than in the summer. In a worst case scenario, that in which the bollard receives no light, the lighting bollard will operate at minimum capacity that will still allow for 14 days of autonomy (based on a 16 hour night)!
(How long does it take to charge the battery if it is completely drained?)
The solar bollard’s adaptive microprocessor will actively attempt to prevent deep discharging situations so the likelihood of the battery becoming completely drained is lower than with most other solar-powered lights. If for some reason the light were to be completely drained of energy ( low voltage disconnect), it would take 10 hours of direct exposure to return to a 100% state of charge. This is assuming the sun was shining at the standard definition of 1000Wm2.
3 year warranty includes coverage of the solar bollard’s battery and lighting fixture.
(Do hot and dry climates affect battery performance and life expectancy?)
Reliance Foundry selected pure lead construction batteries for use in its solar-powered lighting bollards. These batteries are rated for use in temperatures that range from -40°F (-40°C) to 140°F (60°C) ambient environments and have fared well in many hot and dry locations. In fact, Reliance Foundry’s solar powered bollards have been effectively put to use in some of the world’s warmest and driest locations, including Arizona, Saudi Arabia, Australia and New Mexico.
(How much sunlight is required to power these bollards and how well do they perform in low-light applications?)
Solar insolation refers to the amount of sunlight that a solar bollard receives in one day. A site’s region, weather patterns and any shading will all affect the level of solar insolation that a lighting bollard receives. For Reliance Foundry’s lights to operate effectively, they should receive unobstructed sun exposure for the middle part of the day, during the winter. Ideally, this means that the bollards should not be subjected to any form of shade between the hours of 10 am and 2 pm. Remember that solar lighting may not be the best fit for all sites.
(Do these solar lights contribute to light pollution?)
Dark skies is an initiative to reduce light pollution. Reliance Foundry’s solar bollard lights deliver light in a highly effective manner. They are categorized as “cut-off” fixtures and this means that less than 2.5% of the light output is allowed to escape the fixture above 90 degrees. Cut-off lights contribute positively to a site’s lighting performance except in the areas required to be darkest, under the LEED rating system.
(What is the total power of these solar lighting bollards?)
Reliance Foundry’s solar bollards have the ability to provide a maximum of 3W but their adaptive microprocessors will adapt to a site’s prevalent weather conditions. In an effort to ration energy, the adaptive microprocessor will vary the output based on the installation location, season and current weather conditions.
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(How much light do these bollards provide?)
Luminous flux describes the amount of light output that a lighting bollard provides. It is measured in lumens. Reliance Foundry’s solar bollards offer a typical lumen of 130, which makes them a leader among outdoor solar lighting systems.
(In what pattern will light lay out in the area surrounding the bollard?)
Reliance Foundry offers two types of solar-powered that distribute light in two different patterns: symmetrical and asymmetrical. Symmetrical lighting bollards deliver light in a condensed, even circular pattern while asymmetrical lighting bollards deliver light in a narrow elongated form that is ideal for pathway lighting. Symmetrical lighting is generally used in in landscaping applications while asymmetrical lighting is used to brighten walkways in safety applications. Asymmetrical lights distribute light in an elongated oval that is approximately 20’ long while symmetrical lights deliver light in a circular pattern that has a 14’ diameter. It is important to note however that light fades the further it gets from its source. For adequate continuous light coverage, it is recommended that asymmetrical lighting bollards be placed 12’ apart and symmetrical lighting bollards be placed 8’ apart.
(Will light delivered from the solar bollard be stronger in some points than at others?)
Every lighting system will provide light at differing points of illumination throughout its distribution pattern. This means that light will appear more intense at certain points of distribution than others and different distribution patterns will deliver light at different levels of intensity. For most solar bollard lighting applications, the average and minimum illuminance values and the maximum to minimum uniformity ratio for the area to be illuminated are of the most interest. IES files that can be used to determine if these bollards will met the illuminance requirements for a project are available through Reliance Foundry’s sales staff.
(What are the differences between lighting colors?)
Lighting color is measured in degrees kelvin and different temperatures provide different colored light. Reliance foundry’ offers solar lighting bollards that deliver light in one of two different colors - neutral (or white) and warm (or Yellow). Generally, light color measurements in kelvin are specific to white light. Neutral light is the most commonly selected lighting option. It is the lighting color that is most similar to natural light and is commonly used on walkways and outside buildings. Warm light creates a softer ambience and is often used in landscaping and decorative applications. It offers the advantage of more effectively conserving power than other colors as cooler temperature lights are more efficient than warmer ones.
Reliance Foundry’s solar bollards have a base that is constructed from steel and a cap that is composed of aluminum. They are finished with a durable powder coating and their lighting fixture is created from a polycarbonate that makes them almost completely resistant to vandalism. To learn more about this “smart” solar lighting bollard, please view Reliance Foundry’s online catalogue of solar powered lighting bollards.