What Type of Light Bulbs Are Right For You?
What Type of Light Bulbs Are Right For You?
Whether you are looking to upgrade your light bulbs or simply purchase replacements, there are many options. From incandescent to CFLs, LEDs and halogens, it can be confusing.
To understand the different types of bulbs, you need to know about wattage and color temperature. These are important factors when making a decision to replace your current bulbs.
1. Incandescent
A traditional incandescent light bulb uses electricity to heat a filament that produces light. It is a simple system, inexpensive to manufacture and works well with either alternating or direct current. It has a glass envelope that holds the filament and a metal cap that contains a vacuum or inert gas to preserve the filament from evaporating and burning.
The problem with incandescent bulbs is their inefficiency: 90 percent of the energy they use is dissipated as heat, wasting precious energy and creating a fire hazard. They also high frequency motion Sensor consume large amounts of electricity, driving up power bills and pushing air conditioning systems to work harder, which in turn generates more greenhouse gases.
Lighting manufacturers and the energy industry are working to develop newer technologies that are more environmentally friendly. However, the energy efficiency standards that have been created do not ban incandescent bulbs from being sold, explains deLaski. He adds that “They just set a standard that any of those three technologies could meet.” This was to encourage manufacturers to invest in each one and compete to create the best technology, but it doesn’t mean consumers have to rush out to replace their old bulbs.
2. LED
LEDs are more energy efficient than traditional bulbs because they conserve their light by only directing it in one direction (compared to other models that disperse the light all around). They also use less power, so they generate much less heat and don’t have to work as hard. This means they can operate at lower temperatures and last up to three times longer than traditional bulbs.
Unlike fluorescent bulbs, LEDs don’t contain mercury. They instead rely on semiconductors to create illumination. These semiconductors have a positively charged component with “holes” and a negatively charged component with “pile-ups” that allow electrons to pass through them. The movement of these electrons produces light. The semiconductor is then encased in shatter-resistant plastic and a cover called a lens for single-direction LED bulbs or optics for omni-directional bulbs to give them the look of traditional bulbs.
Another advantage of LED bulbs is that they don’t require specialist disposal, which decreases their carbon footprint at the end of their life. They can be recycled in regular recycling centers alongside other bulbs.
A major downside of LED bulbs is that if they break, they can release toxic materials into the air. These toxic substances, like phosphor and lead, can be absorbed into the human body, potentially causing illness. To prevent this, it’s recommended that people wearing protective clothing sweep up broken LED bulbs and dispose of them as hazardous waste.
3. Halogen
Halogen light bulbs are a specialized form of traditional incandescent light that uses a different filament inside the glass bulb. This filament is encapsulated in a quartz envelope which holds a gas called halogen. This gas has the ability to combine with tungsten vapor and redeposit it back on the filament. This allows the halogen bulbs to operate hotter and last longer than standard incandescents.
These bulbs also have a higher Kelvin temperature, which provides a brighter, whiter, and more natural-looking light. Additionally, halogen bulbs are easily dimmable, making them a great option for accent lighting and creating different moods in your home.
However, halogen bulbs are less energy efficient than LEDs. This is because they convert only 10% of the electrical energy they consume into visible light, with the remaining 90% being emitted as heat. This inefficiency contributes to increased demand for power, which in turn produces more greenhouse gas emissions.
Halogen bulbs also have a shorter lifespan than LEDs, so they need to be replaced more frequently. This creates more waste and adds to the amount of material that ends up in landfills. Additionally, they often contain hazardous materials such as mercury, which can pose a risk to the environment when not properly disposed of.
The luminous efficacy of halogen bulbs is significantly lower than that of LEDs, which produce anywhere from 45 to 200 lumens per watt of electricity. As a result, these bulbs are only suitable for use in fixtures that are designed specifically for their use and must be used with caution.
4. Fluorescent
Fluorescent light bulbs generate light by heating gases in a long tube. They use far less energy than traditional incandescent bulbs, and they last several times longer. They are available in a variety of shapes, sizes and color temperatures.
However, they can also be very inefficient, as more than 90 percent of the electricity used to run them escapes the filament as heat. They emit more blue and less red light than incandescents, which is why many people choose fluorescent tubes that are enriched for greener light (wavelengths of 400-500 nm).
Many governments have banned traditional bulbs in favor of CFLs. This change reflects the fact that the former bulbs produce much more pollution than LEDs or halogens, particularly greenhouse gases that contribute to global climate change and poisonous mercury in landfills.
Fluorescent bulbs contain a small amount of mercury that is sealed inside the glass tubing, so they must be handled light bulbs carefully. The EPA recommends disposing of fluorescent and CFL bulbs in special, sealed containers to prevent breakage and release of mercury vapor. The EPA also recommends recycling as many fluorescent bulbs as possible.
Melbourne is home to one of the world’s leading recyclers of mercury from fluorescent bulbs, CMA EcoCycle. Their plant is located in Campbellfield and can process large quantities of discarded fluorescent bulbs.