Air-cooled (water-cooled) heat pump unit + air conditioning terminal

The air-cooled heat pump unit uses air as the cold (heat) source. Through the refrigerant cycle, it releases the indoor heat to the outdoor air in summer to achieve cooling, and absorbs heat from the outdoor air in winter to provide indoor heating. Water-cooled heat pump units use water as the cold (heat) source. Through water circulation and heat exchange with the refrigerant, they achieve cooling by dissipating heat through the cooling tower. In winter, they absorb heat from the water for heating. Air-cooled heat pump units are easy to install and do not require auxiliary equipment such as cooling towers, but they are greatly affected by the ambient temperature. Water-cooled heat pump units have high cooling and heating efficiency and stable operation, but they require the installation of auxiliary equipment such as cooling towers. The system is complex, and the installation cost and floor space are large.

2. Air-cooled duct air conditioner

The air-cooled ducted air conditioning system consists of an air-cooled outdoor unit, an indoor unit and an air duct system. The air-cooled outdoor unit achieves cooling or heating through the refrigerant circulation, delivering the cold (hot) air to each indoor unit through the air duct, and then the indoor units send the processed air into the room. This system is flexible in installation. The indoor unit can be flexibly installed according to the building layout and room functions, and the air duct system can also be designed as needed to adapt to different building structures. However, the uniformity of air supply is limited, and there may be an unsatisfactory indoor temperature field distribution.

3. Water-cooled refrigeration unit + cooling tower + hot water boiler (or other heat source) + air conditioning terminal

Water-cooled refrigeration units utilize the refrigerant cycle to transfer the indoor heat to the cooling water, and then dissipate the heat into the atmosphere through a cooling tower to achieve cooling. Hot water boilers and other heat sources provide hot water for air conditioning systems in winter to achieve heating. This form has strong cooling and heating capabilities and can meet the high-load demands of large buildings. However, the system involves multiple devices and complex pipelines, making installation, commissioning and maintenance difficult. Moreover, the cooling and heating process consumes a lot of energy and has relatively high operating costs.

4. Air-cooled duct air conditioner

The air-cooled ducted air conditioning system consists of an air-cooled outdoor unit, an indoor unit and an air duct system. The air-cooled outdoor unit achieves cooling or heating through the refrigerant circulation, delivering the cold (hot) air to each indoor unit through the air duct, and then the indoor units send the processed air into the room. This system is flexible in installation. The indoor unit can be flexibly installed according to the building layout and room functions, and the air duct system can also be designed as needed to adapt to different building structures. However, the uniformity of air supply is limited, and there may be an unsatisfactory indoor temperature field distribution.

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