How to save energy by using elevators?

The total electricity consumption of elevators in China is about 30 billion kWh every year. If the enterprise takes the stairs and passes through the lower floors, several elevators are only partially opened during the rest time, and the elevator power consumption can be reduced by about 10%. In this way, each elevator can save 5000 kwh of electricity every year, and correspondingly reduce carbon dioxide emissions by 4.8 tons. About 600,000 elevators in China can save about 3 billion kWh of electricity each year by adopting such measures, which is equivalent to reducing carbon dioxide emissions by 2.88 million tons.

Energy-saving method of elevator

(1) In order to save electricity, the core of the elevator is to use the electric energy output by the motor in the braking state. Now there are mature elevator energy-saving technologies in China, and more and more shopping malls and hotels in some big cities realize the importance of elevator energy-saving. Most of them adopt phase control technology and energy feedback technology. Because there is no resistance heating source, the temperature of the elevator machine room drops obviously, saving the power consumption of the cooling equipment in the machine room.

(2) Some old elevators without group control function should be equipped with group control devices, which can not only reduce energy consumption, but also improve operation efficiency.

(3) It is best to use an escalator with frequency conversion function. Because the frequency conversion escalator will automatically stop when no one is riding, and it will automatically run after being recognized by special devices when someone approaches.

(4) Developers should choose elevators with appropriate power according to their own needs, so as to save electricity and money.

(5) The property management department can contact the maintenance personnel of the manufacturer to connect the car lighting and ventilation equipment in the elevator with the door opening device, so that these equipment can only run when the elevator is running and automatically close when the elevator is stationary.

(6) Using the green elevator is also an effective way. If you use the green elevator, you can save at least 30% electricity.

Roughly speaking, if there are 50,000 elevators for energy-saving transformation, and each elevator saves 30% electricity, it will save 450 million kWh every year. If the electricity consumption of cooling equipment in elevator machine room is saved, the electricity saving can exceed 600 million kWh a year.

(7) Some hotels are gradually improving the elevator management system. At present, the competent departments in some public places have formulated the elevator management system, which aims to reduce the empty rate of elevators. In some public places such as hotels, shopping malls, stations and docks, elevators run half in leisure and half at night. These measures can reduce the no-load rate and save electricity.