How LEDs are Different
LEDs are very small, about the size of the head of a pin. Blue LEDs combined with special phosphors create high quality white light.
LEDs typically emit light in a specific direction, thereby reducing the need for reflectors and diffusers that can trap light.
LEDs are up to 90% more efficient compared with incandescent, and up to 50% more efficient compared with CFLs.
LED based lighting products, collectively referred to as Solid State Lighting (SSL), are currently available in a wide variety of residential, commercial, and industrial products. The rapid advancement of LED technology has led to substantial energy savings, and lower total cost of ownership (TCO).
Whether you are looking for LED lighting products for your home, office, retail store, warehouse, or factory, there are LED lighting products available which are specifically designed to meet your needs .
Quality LED light bulbs last longer, are more durable, and offer better light quality compared to virtually all other forms of lighting.
Horticultural lighting application
Plant Growth and Sun Light
Light consists of many tiny particles called photons or quantum. How much energy contained in a photon depends on its wavelength. The sensibility of the plants to the solar spectrum is different from human eyes.
The energy of a blue light photon is equivalent to the energy contained in one and a half red light photons. It means that at the same energy level, red light source has more effective photons than the blue light source. However, the sensibility of plants to different light varies, thus it produces different physiological responses. Therefore, choosing high-efficient light sources and matching spectrum is the key to facilitate effective plant growth.
The plant photosynthesis uses only part of solar radiation spectrum. The range of wavelength is from 400nm to 700nm. This range is called photosynthetically active radiation (PAR). The degree of plants’ being irradiated can be expressed by radiation power value that promotes the photosynthesis in per square meter. Since it has no specific name, but can be considered as irradiance, so its unit is written as W/m2.
The unit representing the quantity of photons in the PAR is µmol. The PAR approximately accounts for 45 percent of the total solar light radiation.
The photosynthesis is the most basic physiological reaction in plant growth, but photosynthesis is inseparable from the light. Light can be used to transform carbon dioxide and water into glucose and then is absorbed by the leaves and roots.
Spectrum for Plant
Human eyes can only detect certain range of solar spectrum. But for plants, that is totally different. Plant leaf contains Chlorophyll a and Chlorophyll b. Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light. Chlorophyll absorbs light most strongly in the blue portion of the electromagnetic spectrum, followed by the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum, which it reflects, producing the green color of chlorophyll-containing tissues.
Photosynthetically Active Radiation (PAR)
The plant photosynthesis uses only part of solar radiation spectrum. The range of wavelength is from 400nm to 700nm. This range is called photosynthetically active radiation (PAR). Its unit is written as W/m2.
The spectrum of different colors has a great influence on plant growth.
Photosynthetic Photon Flux (PPF)
A measurement of the total light (photons) emitted by a light source each second. PPF tells us how much PAR is emitted by a light source. Its unit is “micromoles per second”, µmoles/sec.
Photosynthetic Photon Flux Density (PPFD)
A measurement of the photons that reach the targeted area each second. PPFD is measured over one meter square area. Its unit is ”micromoles per square meter per Second”, µmol/m2/s.
Residential home lighting application
AXP Technology a-bulbs look and operate like traditional incandescent bulbs, but use a new LED filament technology that uses at least 80% less energy and are designed to last 25 times longer. The AXP Lighting family of a-bulbs are the perfect incandescent replacement for table lamps, ceiling lighting and bath fixtures around the home. They are also free of any mercury. LED lights also have the following advantages:
- Safer: LEDs are much cooler than incandescent lights, reducing the risk of combustion or burnt fingers.
- Sturdier: LEDs are made with epoxy lenses, not glass, and are much more resistant to breakage.
- Longer lasting: LEDs can last up to 25 years before replacing.
Below we have listed out the total cost savings of powering a three bedroom house when comparing obsolete incandescent bulbs to the new AXP LED light bulbs. Total savings over a ten (10) year period comes out to $3,630. From the numbers below, the total cost savings over a 25 year period equals an astonishing $9,075.
AXP LED bulbs – Estimated cost of electricity to light a three (3) bedroom home for ten (10) years.
|Bulb startup cost – Change every 20-25 years||$320|
|Average energy costs – having an average usage of 4hrs per day||$490|
|TOTAL COST over ten (10) years:||$810|
Obsolete Incandescent Bulb – Estimated cost of electricity to light a three (3) bedroom home for ten (10) years.
|Average energy costs – having an average usage of 4hrs per day||$4,040|
|TOTAL COST over ten (10) years:||$4,440|
TOTAL SAVINGS over a ten (10) year period!