Central air conditioning has entered thousands of households, and almost all factories, railway stations, airports, hotels, shopping malls and libraries have its presence. However, we have noticed that the use of central air-conditioning needs to consume a lot of electricity, so it is very necessary to study the energy-saving problem in central air-conditioning management today. Usually, the central air conditioning used in large buildings accounts for about 50% of its total power consumption. Take the central air conditioning system of the airport terminal where the author works as an example, the hourly power consumption in July and August is about 2000KWh. The hourly electricity consumption in June and September is about1000 kwh; The power consumption per hour in winter is also above 300KWh. Implementing effective operation management measures will have a good energy-saving effect.

1 Problems existing in energy-saving management in the operation of central air-conditioning equipment

1. 1 Not paying enough attention to fans and pumps.

Generally speaking, the operating electrical indicators of fans and pumps account for a large proportion of the electrical indicators of the whole central air-conditioning system, and may even reach 40%. Fans and pumps are important parts of central air-conditioning system, which are used for a long time and generally will not be replaced. Some designers and owners of central air conditioning systems often ignore this point and unilaterally pursue the creation of environmental comfort. When selecting fans and pumps,