Since the main equipment of Shanghai central air-conditioning is fan and water pump, the better way to save energy is to use frequency converter. At present, most intermediate air conditioners still use the old control method, that is, by changing the number of compressor units, water pumps, and fans to start and stop, to achieve the purpose of adjusting the temperature. Let's follow the Shanghai air conditioner to understand it. Air conditioning repair
1. The equipment is fully open or fully closed for a long time, and it runs in turn, which wastes electricity. Shanghai Central Air Conditioning Project
2. The motor is started directly at power frequency, and the impact current is large, which seriously affects the service life of the equipment. Shanghai air conditioning design
3. The temperature control effect is not good. When the environment or the heating and cooling load changes, the indoor temperature can only be adjusted by increasing or decreasing the number of cold and hot water pumps or using a wind deflector. The temperature fluctuates greatly and the comfort is poor.
The central air conditioner has the following advantages after adopting the frequency converter:
1. The frequency converter can soft start the motor, which greatly reduces the impact current, reduces the wear of the motor bearing, and prolongs the life of the bearing.
2. Adjusting the flow and pressure of the water pump fan can be done directly by changing the operating frequency of the inverter, which can reduce or eliminate baffles and valves.
3. The power consumption of the system is greatly reduced, and the noise is reduced.
4. If the temperature closed-loop control method is adopted, the Shanghai central air-conditioning system can automatically adjust the air volume by detecting the ambient temperature, and automatically adjust with the changes in weather and heat load, with small temperature changes and rapid adjustment.
5. The system can be networked with the central control room through the field bus to realize centralized and remote monitoring of Shanghai central air-conditioning.
