From October 1 this year, China will gradually ban the sale of ordinary lighting incandescent lamps according to the power level, which has caused a lot of public discussion on the economic account of a light bulb in home lighting. At present, home lighting mainly includes incandescent lamps, energy-saving lamps and LED lamps. A few days ago, the reporter investigated and calculated that although the price of LED lamps is several times more expensive than energy-saving lamps, the total cost of use is the lowest among the “three lampsâ€.
Mr. Feng, the citizen, is renovating the new house. In the past few days, he and his wife have been arguing about which kind of lighting bulb to use. He thinks that it is more cost-effective to use LED lights, and the wife thinks that the price is too expensive and insists on purchasing energy-saving lamps.
Husband and wife reconciliation What kind of lamp is more economical in ten years?
In Mr. Feng's view, the price of LED lamps is indeed more expensive than that of energy-saving lamps, but LEDs have high conversion rates and longer service life. Although the initial investment is more, the cost of use is lower, so it is more economical.
However, his wife believes that the living room, dining room, study, bedroom and other rooms add up to a total of 28 lights, a 5 watt LED light generally sells 80 yuan, a little better to sell more than 100 yuan, and Energy-saving lamps of the same power only sell for about 13 yuan. If you need to install 2400 yuan for LED lights, you only need æŽ364 yuan for energy-saving lamps. The cost of buying LED lights is 5 times higher than that of buying energy-saving lamps. "If you spend a few hundred yuan, you can solve it for thousands of dollars. Moreover, the energy consumption of energy-saving lamps is not high."
Subsequently, the calculator has calculated an account: the current residential electricity price is 0.5224 yuan per degree, the energy saving lamp saves 1876 yuan, can use 3591 kWh, "these electricity is enough for 28 ç› 5 watts of lighting at the same time using 25650 Hours, at least ten years of home lighting electricity bills saved."
Mr. Feng pointed out that energy-saving lamps can only be used for one or two years, and LED lamps can generally be used for more than ten years. Calculated, one LED lamp is equivalent to the service life of 10 energy-saving lamps, and the cost of purchasing 10 energy-saving lamps is much higher than the price of one LED lamp.
Market tendency account, over 90% of families are willing to use energy-saving lamps
The reporter found that at present, the lighting in ordinary family life mainly includes incandescent lamps, energy-saving lamps and LED lamps. Among them, energy-saving lamps are the most common lighting fixtures for urban residents. “Because the price is relatively expensive, the purchase of LED lights is relatively small, but the sales volume is gradually rising.†In front of the daily necessities container in a shopping mall in Chengdu, promoter Zhang said.
In the investigation, the reporter noticed that the above three kinds of family life lighting fixtures, although the price is not the same, but the cheapest kind of bulb is the incandescent lamp, the most expensive is the LED lamp. The 40-watt incandescent lamp sells for about 1.8 yuan, the 5-watt energy-saving lamp is 12 yuan-20 yuan, and the LED lamp 60 yuan-120 yuan, most of which sells about 80 yuan.
"The actual average service life is certainly not as long as the manufacturer has announced, and it must be discounted." A store owner in the Chengdu 512 building materials market said that according to his experience of selling bulbs for more than ten years, incandescent lamps have a service life of at most 1,000 hours. Most of the energy-saving lamps are only 3,000 hours, while the LED energy-saving lamps manufacturers are nominally more than 50,000 hours, and the actual use is generally 30,000 hours. According to the owner of the store, more than 90% of consumers in the home decoration choose energy-saving lamps because of the low price and energy saving than incandescent lamps.
20-year household account LED lights save at least 2,500 yuan
Then, based on the LED lights, it is more cost-effective to compare and calculate which lighting method. Suppose an LED lamp has a service life of 30,000 hours, an energy-saving lamp of 3,000 hours, and an ordinary incandescent lamp of 1,000 hours. According to industry-related experiments, a 5 watt energy-saving lamp is equivalent to a 40-watt ordinary incandescent lamp. A 3 watt LED light with the same efficacy as a 40 watt incandescent lamp.
Take Mr. Feng's new house as an example. For 28 watts of household lighting, the use of LED lights will save 2,577.632 yuan (91.344 yuan / only × 28 pieces) compared with energy-saving lamps.
According to the average of 4 hours per lamp per day, 1460 hours (4 hours / day × 365 days / year) is used for one year, and 30,000 hours is equivalent to 20.5 years. That is to say, with the current market price, as well as the cost performance of energy-saving lamps and LED lamps, a household using LED lights will save more than 2,500 yuan in 20.5 years compared with energy-saving lamps.
Mr. Feng, the citizen, is renovating the new house. In the past few days, he and his wife have been arguing about which kind of lighting bulb to use. He thinks that it is more cost-effective to use LED lights, and the wife thinks that the price is too expensive and insists on purchasing energy-saving lamps.
Husband and wife reconciliation What kind of lamp is more economical in ten years?
In Mr. Feng's view, the price of LED lamps is indeed more expensive than that of energy-saving lamps, but LEDs have high conversion rates and longer service life. Although the initial investment is more, the cost of use is lower, so it is more economical.
However, his wife believes that the living room, dining room, study, bedroom and other rooms add up to a total of 28 lights, a 5 watt LED light generally sells 80 yuan, a little better to sell more than 100 yuan, and Energy-saving lamps of the same power only sell for about 13 yuan. If you need to install 2400 yuan for LED lights, you only need æŽ364 yuan for energy-saving lamps. The cost of buying LED lights is 5 times higher than that of buying energy-saving lamps. "If you spend a few hundred yuan, you can solve it for thousands of dollars. Moreover, the energy consumption of energy-saving lamps is not high."
Subsequently, the calculator has calculated an account: the current residential electricity price is 0.5224 yuan per degree, the energy saving lamp saves 1876 yuan, can use 3591 kWh, "these electricity is enough for 28 ç› 5 watts of lighting at the same time using 25650 Hours, at least ten years of home lighting electricity bills saved."
Mr. Feng pointed out that energy-saving lamps can only be used for one or two years, and LED lamps can generally be used for more than ten years. Calculated, one LED lamp is equivalent to the service life of 10 energy-saving lamps, and the cost of purchasing 10 energy-saving lamps is much higher than the price of one LED lamp.
Market tendency account, over 90% of families are willing to use energy-saving lamps
The reporter found that at present, the lighting in ordinary family life mainly includes incandescent lamps, energy-saving lamps and LED lamps. Among them, energy-saving lamps are the most common lighting fixtures for urban residents. “Because the price is relatively expensive, the purchase of LED lights is relatively small, but the sales volume is gradually rising.†In front of the daily necessities container in a shopping mall in Chengdu, promoter Zhang said.
In the investigation, the reporter noticed that the above three kinds of family life lighting fixtures, although the price is not the same, but the cheapest kind of bulb is the incandescent lamp, the most expensive is the LED lamp. The 40-watt incandescent lamp sells for about 1.8 yuan, the 5-watt energy-saving lamp is 12 yuan-20 yuan, and the LED lamp 60 yuan-120 yuan, most of which sells about 80 yuan.
"The actual average service life is certainly not as long as the manufacturer has announced, and it must be discounted." A store owner in the Chengdu 512 building materials market said that according to his experience of selling bulbs for more than ten years, incandescent lamps have a service life of at most 1,000 hours. Most of the energy-saving lamps are only 3,000 hours, while the LED energy-saving lamps manufacturers are nominally more than 50,000 hours, and the actual use is generally 30,000 hours. According to the owner of the store, more than 90% of consumers in the home decoration choose energy-saving lamps because of the low price and energy saving than incandescent lamps.
20-year household account LED lights save at least 2,500 yuan
Then, based on the LED lights, it is more cost-effective to compare and calculate which lighting method. Suppose an LED lamp has a service life of 30,000 hours, an energy-saving lamp of 3,000 hours, and an ordinary incandescent lamp of 1,000 hours. According to industry-related experiments, a 5 watt energy-saving lamp is equivalent to a 40-watt ordinary incandescent lamp. A 3 watt LED light with the same efficacy as a 40 watt incandescent lamp.
Take Mr. Feng's new house as an example. For 28 watts of household lighting, the use of LED lights will save 2,577.632 yuan (91.344 yuan / only × 28 pieces) compared with energy-saving lamps.
According to the average of 4 hours per lamp per day, 1460 hours (4 hours / day × 365 days / year) is used for one year, and 30,000 hours is equivalent to 20.5 years. That is to say, with the current market price, as well as the cost performance of energy-saving lamps and LED lamps, a household using LED lights will save more than 2,500 yuan in 20.5 years compared with energy-saving lamps.
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