The midsummer is approaching, which means that another peak of electricity consumption is coming. If you want low-carbon energy-saving summer, what can you do to make the meter go slower? The staff of each position in the power department will answer the questions about LED lights. Power consumption.
Question 1, how much does the LED light cost all night?
Mr. Li's house is relatively small, and the toilet is going through the hall at night. Therefore, about 4 meters of LED lights are installed on the ceiling of the hall, which are 1 meter and 60 beads, which is convenient for night walk. Since applying for Fenggudian, Mr. Li intends to drive LED lighting all night. However, his wife is very opposed. He believes that there are many LED lights and the power consumption is not small. It is not worthwhile to open one night.
The power supply bureau inspection and maintenance squad leader replied:
The common LED strips on the market are 5050 chip package format. The operating voltage of this LED lamp bead is generally between 3.2 and 3.4 volts, and the power is about 0.18W-0.2W. One meter LED lamp with 60 lamp beads, the power consumption is generally between 9W and 12W.
Mr. Li’s house has a 4-meter LED strip. If it is on, the energy consumption per hour is up to 48W, which is slightly larger than an ordinary fluorescent lamp. If you drive for 10 hours from 22 o'clock to 8 o'clock the next day, Mr. Li's LED lamp in his home consumes 0.48 degrees. According to the electricity price of the first step of Gudian 0.288 yuan / kWh, it is about 0.14 yuan.
Question 2, do you need to turn off the fluorescent light to save power?
Miss Chen’s hall uses 40W of ordinary fluorescent lamps. The old house is not well lit, and I used to keep the lights on at night. After the electricity bill was copied in January, the mother-in-law felt that she would turn off the lights and save power. From the hall to the kitchen for a few minutes, the hall lights should be turned off.
But I heard that the fluorescent lamp is extremely large at the start-up, and the frequent switching does not save electricity. Is this really the case? How much electricity can be saved by turning off the lights?
The power station inspection class monitor of the power bureau replied:
When the fluorescent lamp is turned on, it does have a transient high current, which is about 5 to 7 times that under normal working conditions. However, this current variation time is extremely short, and the energy consumption of this instantaneous large flow is equivalent to the energy consumption of 1 millisecond under the normal working power, which is negligible.
The conclusion is that although the fluorescent lamp is not a big power consumer, turning off the light is more energy-saving than turning on the light.
The US popular science program "The Gossip Terminator" has conducted detailed tests on this in the fourth quarter of the 26th season. The conclusion is that unless the room is returned within 1/3 second, turning off the lights saves power compared to turning on the lights. Miss Chen and readers who like to go online to catch up with American TV dramas can go and see.
However, too frequent switches must have a certain impact on the service life.
Miss Chen uses a 40w power ordinary fluorescent lamp, plus an inductor ballast with 5 to 8W power. If you calculate for 5 hours a night, the energy consumption is 0.24 kW / hour, which is 0.24 degrees. According to the first step of the electricity price of 0.538 yuan / kWh, about 0.13 yuan. As for whether or not to turn off the lights to save the money, it depends on Miss Chen’s own choice.
Editor: Li Jie
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