Lift
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The lift system is usually arranged to bring all cars successively to the main terminal to load passengers and take them to their destinations.
The total cost of the vertical transportation system in a high-rise building can be up to
10% of the construction cost of the building. Moreover, because the motor of the lift will dissipate energy, so the quality of this service is often an important factor in tenant's choice of space in competing buildings.
Factors That Affect Energy Consumption in Lift System
There are different estimates for the percentage energy dissipation of lifts as a percentage of the energy consumption of the whole building (5%-15% of the total costs, depending on what other services are running in the building)
Several factors affect the energy consumption of the lifts system, including
nFriction losses incurred while travelling.
nDynamic losses while starting and stopping.
nLifting (or lowering) work done, potential energy transfer.
nRegeneration into the supply system.
The general approach to energy efficiency in lift is merely to minimize the friction losses and the dynamic losses of the system.
There are many factors that will affect these losses:
(A) Characteristic of the equipment
nThe type of motor drive control system of the machine.
nThe internal decoration of the lift car...