Introduction to elevators in residential buildings […]
Introduction to elevators in residential buildings Elevators consume huge power and are one of the largest energy-consuming equipment in high-rise buildings. According to estimates by the China Elevator Association, the average daily power consumption of each elevator in my country is about 40kWh, which accounts for about 5% of the energy consumption of the entire building. The traction machine, the heart of the elevator, has undergone the upgrading of planetary gear transmission, helical gear transmission, and worm gear transmission. The permanent magnet synchronous traction machine that appeared in the late 1990s is characterized by its small size, low loss, With its advantages of high efficiency, it has developed into the mainstream model of the new type of traction machine and has occupied the mainstream position in the market.
At present, the traction machines used in the elevator introduction of residential buildings are mainly permanent magnet synchronous traction machines and traditional asynchronous traction machines. Compared with the latter, the advantages of permanent magnet synchronous traction machines are mainly reflected in the following aspects:
In general, permanent magnet synchronous traction machine is the future development direction of traction machine. Correspondingly, energy-saving elevators will become the future development direction of the industry. In the next few years, with the continuous advancement of my country's infrastructure construction, elevator production will maintain a steady growth, and the growth rate will be between 15%-20%. With the continuous development of elevator industry technology and the continuous implementation of my country's energy-saving and emission-reduction policies, the proportion of my country's energy-saving elevator production in total elevator production has continued to increase, from 30% in 2006 to about 85% in 2014. In order to cooperate with the implementation of national energy-saving policies for buildings, various local governments have introduced elevator replacement or renovation plans to replace elevators that need to be replaced with energy-saving elevators through replacement or technological transformation.
Therefore, the future market demand for energy-saving elevators for residential building elevators mainly includes three aspects, one is the new demand, the second is the replacement of the old elevator, and the third is the energy-saving renovation. Considering that 60% of my country's elevator technology is imported from Japan, the amount of replacement or technological transformation of old elevators that year was calculated based on the production of elevators 15 years ago. From 2006 to 2014, my country's demand for energy-saving elevators due to new demand and replacement of old elevators.
From the above table, my country’s demand for energy-saving elevators is very large, and the demand growth is very strong. Except for the number of original elevators transformed into energy-saving elevators, the compound growth rate from 2008 to 2014 has reached 27.27%, which greatly exceeds This has improved the growth rate of elevator demand in my country.