The hottest energy efficiency standard or elevator

  • Detail

Energy efficiency standards or elevator energy efficiency access system

on July 28, the "National Elevator Energy Efficiency Testing Technology Seminar" hosted by China Special Equipment Inspection Association and hosted by Guangzhou special electromechanical equipment testing institute was held in Panyu, Guangzhou. Special equipment inspection and testing institutions from 36 provinces and cities across the country and 7 elevator production enterprises attended the seminar

At the seminar, sunlixin, vice president of Tianjin special equipment testing and Research Institute, said: "the elevator energy efficiency standard will be used as the access system for elevator energy conservation. Therefore, the determination of energy efficiency testing methods and energy efficiency evaluation indicators is particularly important."

large space for elevator energy conservation

in recent years, the number of elevators in use in China has increased rapidly, maintaining an annual growth rate of 15%. According to the data from the special equipment safety supervision bureau of the State Administration of quality supervision, inspection and quarantine, the number of elevators in use in China was 1153155 at the end of 2008. The power consumption of elevators accounts for about 5% of the total building energy consumption

"about 80% of our elevators are new products in recent 10 years, and the mainstream technology is VVVF control. In recent years, the permanent magnet synchronous drive technology is continuously recognized by the market, and the market share is expected to be further improved. Therefore, our elevators are in the leading position in energy efficiency." Wu Xingjun, vice president of Guangzhou special electromechanical equipment testing and Research Institute, said

due to the rapid growth and large number of elevators in China, the frequency of use is significantly higher than that in Europe and the United States, so how to improve the efficiency of elevator operation and reduce energy consumption is more important

relevant data show that the average daily power consumption of each elevator in China is about 40kwh. If energy-saving technologies such as permanent magnet synchronous motor and braking power feedback are widely used in new elevator products, a single machine can save about 30% of electricity. In addition, energy-saving review and supervision are carried out for in-service elevators, and energy-saving technological transformation is carried out for high energy consuming elevators. Using advanced frequency conversion control technology and permanent magnet synchronous motor can save about 20% - 45% of energy. If energy feedback technology is adopted, the maximum energy-saving can be 70%

Wang Xiaolei, director of the special equipment safety supervision bureau of the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, stressed that "elevator energy conservation is the responsibility of the special equipment safety supervision department, which is conducive to the unity of safety and economy, to reducing the cost of government energy conservation supervision and reducing the burden on enterprises, and to achieving rapid results in energy conservation and consumption reduction."

improve elevator energy efficiency in three aspects

Wu Xingjun said that to improve elevator energy efficiency, we should start from three aspects. 1、 The newly installed elevator adopts the elevator with high energy efficiency; 2、 Renovate elevators with serious energy consumption; 3、 Improve elevator management level

the so-called use of energy-efficient elevators means that the newly installed elevators should try to use permanent magnet synchronous gearless technology with energy feedback devices. Escalators should be escalators with high transmission efficiency and automatic induction devices. For a single elevator, there are three main categories of energy saving, which are to improve the efficiency of motors and transmission devices; Feed back the energy generated in the process of elevator operation to electricity, so as to reduce the electrical energy consumed per unit time; Reduce the energy consumption of the elevator during standby, such as setting the "sleep" mode similar to the computer

how to realize the energy-saving transformation of elevators? Experts suggest that China is still in the stage of in-depth development of industrialization, informatization, urbanization, marketization and internationalization. It is proposed to adopt frequency conversion technology for the transformation of vertical elevators. On the one hand, the safety and reliability have been greatly improved, on the other hand, the energy-saving effect is also very obvious

for escalators, automatic restart technology should be adopted. At present, most escalators operate at a constant speed without speed regulation. In terms of electric drive, the simplest drive system with direct power supply of AC single speed motor is adopted. The long-term high-speed and no-load operation causes a large waste of electric energy, especially the increasingly serious mechanical wear and tear, and the high replacement cost of accessories. After the automatic restart technology is added, the operation will be automatically stopped when there are no passengers, and the operation service will be automatically restarted when there are passengers, which can greatly save electric energy

in addition, relevant government departments should strengthen the supervision of elevator energy conservation and further promote the use of energy-saving elevators

various discussions on energy efficiency testing methods

elevator energy efficiency standards failed to be issued, mainly because the elevator energy efficiency testing methods and energy efficiency evaluation indicators have not been determined. At the symposium, experts from Guangzhou Institute of special electromechanical equipment testing, Shanghai Institute of special equipment supervision and inspection technology, Shenzhen Institute of special equipment inspection and safety and Shanghai Jiaotong University made an in-depth discussion on the current situation of elevator energy consumption, energy efficiency testing methods, energy efficiency evaluation indicators and main energy-saving measures, in order to seek fair and reasonable testing methods and evaluation indicators

at the same time, experts analyzed the advantages and disadvantages of elevator energy efficiency test methods such as no-load method, overweight method and full load method. Representatives of Mitsubishi, Hitachi, Thyssen, Schindler and Xizi Otis Elevator Companies exchanged views on three major new elevator energy-saving technologies: frequency conversion, permanent magnet synchronization and energy feedback, which attracted extensive attention and in-depth discussion of the participating experts

it is understood that the measures for the supervision and administration of energy conservation of high energy consumption special data report printing and other equipment, which will be implemented on September 1, has clearly listed elevators, boilers and heat exchange pressure vessels as the three high energy consumption special equipment. The convening of this seminar will play a guiding role in the better implementation of the newly revised energy conservation law of the people's Republic of China and the regulations on safety supervision of special equipment, At the same time, it also clarifies the research direction of elevator energy efficiency evaluation indicators, enhances the government's determination and confidence in elevator energy conservation supervision, and will have a far-reaching impact on elevator energy conservation supervision and management in China

Copyright © 2011 JIN SHI