Recently, Mr. Liu went to the supermarket to buy a light bulb, but the light bulbs on the shelves were dazzling, and he was blinded. In addition to traditional incandescent and energy-saving lamps, there is also an LED Light. I don't know how it works. Mr. Liu called the hotline of the newspaper's life laboratory column. I hope that the reporter can experiment and help you see which of these lamps is the most cost-effective.
Investigating LED lights is 16 times more expensive than incandescent lamps. Currently, incandescent lamps are facing a phase of being phased out, and energy-saving lamps have become the mainstream in the market. The reporter saw in a large supermarket in Puhuangyu that energy-saving lamps have become the main products, and the emerging LED lights are not difficult to buy, and incandescent lamps are hard to find. In terms of appearance, unlike the shape of the lamp of the energy-saving lamp, the LED lamp is also a spherical bulb, similar to an incandescent lamp. However, the labeling of the outer packaging shows that the power of the LED lamp is much lower than that of an ordinary incandescent lamp.
The light bulb you are holding is 5 watts of power, and the illumination is equivalent to a 40 watt incandescent lamp. Supermarket shopping guide told reporters that the choice of LED lights and energy-saving lamps is mainly based on the wattage corresponding to the incandescent lamps marked on the box. The reporter also noticed another 3 watt LED lamp with a brightness equivalent to a 25 watt incandescent lamp.
The shopping guide told reporters that many people still choose incandescent or energy-saving lamps, and there are not many customers who buy LED bulbs. LED lights are too expensive. The reporter noticed that the price of a brand of 5 watt LED lights is 49.8 yuan, which is several times more expensive than other energy-saving lamps or incandescent lamps. Through the comparison software query, the lowest price of this LED light is also more than 40 yuan. However, it is worth mentioning that this LED lamp can be marked for 15 years.
Experimental incandescent lamps are the most power-hungry. What are the actual effects of these commonly used bulbs on the market? The reporter purchased three common bulbs on the market for comparative experiments.
The three bulbs purchased by the reporter are incandescent lamps, energy-saving lamps and LED lamps, ranging in price from 3 yuan to 49.8 yuan. The incandescent lamp has a rated power of 40 watts, and the energy-saving lamp has a rated power of 8 watts, which is nominally equivalent to the brightness of a 40-watt incandescent lamp. The LED lamp has a rated power of 5 watts and its nominal brightness is equivalent to 40 watts. Incandescent lamp.
In a dark room, the reporter connected the three bulbs to a 220-volt lamp holder, and measured the current with an ammeter to measure the actual power of the bulb. At the same time, the box of the three bulbs was placed 30 cm from the bulb. The camera is used to capture the reflection of the package with a fixed exposure, so as to intuitively feel the difference between the three bulbs.
By testing the current, the actual power of the three bulbs is quickly derived. The incandescent lamp current is about 0.18 amps, the measured power is about 40 watts; the energy-saving lamp current is about 0.035 amps, the measured power is about 7.7 watts; the LED lamp is about 0.021 amps, and the measured power is about 4.6 watts. From these data, incandescent lamps have the highest measured power and are the most power-hungry.
The LED light is the brightest and coldest. What about the actual lighting effects of the three bulbs? The reporter took a group of photos with a combination of exposure of 200 sensitivities, 5.6 apertures, and 1/30 shutters to record the reflection of the boxes under different bulbs. The photo shows that although the LED bulb has a nominal power of only 5 watts, its brightness is the highest. The incandescent lamp has a slightly lower brightness, and the emitted yellow light looks very bright, but it feels relatively soft. The shape of the lamp of the energy-saving lamp is a shape of a shape, and the light-emitting area is larger, but the color is white, and it is slightly glaring when looking directly.
The same is 40 watts or 40 watts, why is the lighting effect different? It turns out that the light from incandescent and energy-saving lamps is diverging around, and the light from the LEDs is emitted in a single direction, so it appears brighter than the other two bulbs.
In terms of heat dissipation, incandescent bulbs cannot be touched by hand because of excessive temperature after 2 minutes of use. Energy-saving lamps are obviously hot, but they do not feel very hot when they are held by hand, while LED bulbs are minimal. The light bulb is close to the light and can feel lukewarm when touched by hand.
Conclusion The most cost-effective LED lamp is from the price point of view. Buying an LED lamp is equivalent to purchasing 16 incandescent lamps. Buying an energy-saving lamp is equivalent to spending 9 incandescent lamps. Buying LED lights is obviously not as cost-effective as energy-saving lamps and incandescent lamps. But taking into account factors such as power consumption and lamp life, the LED lamp lighting life is 15,000 hours, which is equivalent to the sum of 15 incandescent lamps or 3 energy-saving lamps. In terms of power consumption, incandescent lamps need to consume 600 kWh, energy-saving lamps are 115.5 degrees, and LED lamps are only 69 degrees.
Calculated according to 0.48 yuan per kilowatt hour, using 15,000 hours, the electricity cost generated by using incandescent lamps is 333 yuan, the energy-saving lamps are 139.44 yuan, and the LED lights are only 82.92 yuan. If used for a long time, it is still the most cost-effective LED light, and the lighting effect is best.
Because of the large power consumption, incandescent lamps have been unable to meet the requirements of energy conservation and emission reduction and building a conservation-oriented society. All countries in the world, including China, will eliminate incandescent lamps on the agenda. According to reports, since January 1 this year, South Korea has completely stopped the production and import of incandescent lamps, and has promoted energy-saving alternative products such as LED Luokou lamps and LED tubes. Considering energy saving and emission reduction and building green Beijing, we also recommend that you use more energy-efficient LED lights.
Water Proof Temperature Resistant Indoor and Outdoor wall and flooring Ceramic Tiles:
|
Color and Demension: |
According to your requirements. |
|
Usage: |
Household, Interior Tiles, Commercial, Outdoor, Exterior Tiles. |
|
Finishing: |
Glossy/ Matt/ Glazed, etc. |
|
Application: |
Indoor and Outdoor, Flooring and Wall Tiles. |
|
Certification: |
ISO9001 |
| Trademark: |
OEM Logo |
Please kindly read the details of the porcelain tiles.
For a household with pets and babies, ceramic tile plays an important role. Because it's easy to clean, durable, non-slip, durable, temperature resistant and moisture resistant, the porcelain tile can not only be used in living room, but also can be used in bedrooms, bathrooms and so on.
Ceramic tiles have advantages of good durability and good water resistance, long lasting colour maintainance and easy to clean. Ceramic tiles have a much longer life in comparison to other materials that are used to cover floors and walls. Another benefit associated with the durability of ceramic tiles is that they are resistant to moisture.
Porcelain tile, mosaic tile, floor tile, wall tile, kitchen tile
Huiye Hardware & Electrical Equipment Company Ltd. , https://www.hardwarehuiye.com