How does central air conditioning work?
Central air conditioning is a common air conditioning system in modern buildings. It provides cooling or heating services to the entire building through a set of centralized equipment. This article will introduce in detail the working principle, components and operation process of central air conditioning, and provide you with a comprehensive analysis based on the hot topics and hot content on the Internet in the past 10 days.
1. Components of central air conditioning

The central air conditioning system mainly consists of the following core parts:
| components | Function |
|---|---|
| compressor | Compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas |
| condenser | Cool high temperature and high pressure gas into high pressure liquid |
| expansion valve | Reduce the pressure of the refrigerant so that it evaporates and absorbs heat |
| evaporator | Absorb indoor heat to achieve cooling effect |
| fan coil unit | Delivers hot and cold air to various rooms |
2. Working principle of central air conditioning
The operation of central air conditioning is based on the principle of refrigeration cycle. The specific process is as follows:
1.compression process: The compressor compresses low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas.
2.condensation process: High-temperature and high-pressure gas enters the condenser and becomes high-pressure liquid through cooling.
3.expansion process: The high-pressure liquid is depressurized through the expansion valve and becomes a low-temperature and low-pressure liquid.
4.evaporation process: Low-temperature and low-pressure liquid absorbs indoor heat in the evaporator and evaporates into gas to achieve refrigeration effect.
3. Types of central air conditioners
According to different application scenarios and needs, central air conditioners can be divided into the following types:
| Type | Features |
|---|---|
| Water-cooled central air conditioner | Cooling through water circulation, suitable for large buildings |
| Air-cooled central air conditioner | Dissipates heat through air and is easy to install |
| Multi-split central air conditioner | One host can connect to multiple indoor units, providing great flexibility |
4. The relationship between hot topics on the Internet in the past 10 days and central air conditioning
Recently, hot topics about central air conditioning on the Internet mainly focus on energy conservation and environmental protection, intelligent control and healthy air. The following is a summary of relevant hot topics:
| hot topics | Related content |
|---|---|
| Energy saving and environmental protection | The new central air conditioner uses variable frequency technology to reduce energy consumption by 30% |
| Intelligent control | Remotely control the central air conditioner through mobile APP to improve user experience |
| healthy air | The central air conditioner is equipped with an air purification function to filter PM2.5 and bacteria |
5. Maintenance and maintenance of central air conditioning
In order to ensure the efficient operation of central air conditioners and extend their service life, regular maintenance and upkeep is essential. The following are common maintenance items:
1.Clean filter: Clean or replace the filter regularly to avoid dust accumulation that affects air quality.
2.Check refrigerant: Ensure sufficient refrigerant to avoid a decrease in system efficiency.
3.Clean condenser: Remove dust and debris on the surface of the condenser to ensure heat dissipation.
4.Check circuit: Regularly check the circuit system to prevent electrical failures.
6. Summary
Central air conditioning provides a comfortable indoor environment for modern buildings through efficient refrigeration cycle systems and intelligent control technology. Understanding its working principles and components can help users better use and maintain the equipment. At the same time, combining the current trends in energy conservation, environmental protection and healthy air, choosing suitable central air conditioning products will further improve the quality of life.
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