The SCHLEE water-source heat pump unit is an integrated chiller system developed by the SCHLEE Group that utilizes groundwater, surface water, seawater, soil, industrial wastewater, and waste heat drainage as cold and heat sources to produce chilled and hot water. Due to the relatively stable temperature of groundwater throughout the year, in winter the unit extracts heat from the groundwater for building air conditioning, heating, and other applications. In summer, the unit efficiently removes indoor heat—less affected by ambient conditions—thus maximizing both cooling and heating performance. Moreover, this system does not require auxiliary equipment such as cooling towers, reducing its impact on the surrounding environment and significantly lowering operating costs. The SCHLEE water-source heat pump unit has a cooling capacity ranging from 120 to 2,200 kW, with outlet water temperatures covering a range from 5 to 50°C. The unit can produce both chilled and hot water, making it suitable for comfort air conditioning systems in office buildings, hospitals, shopping malls, and other similar facilities.
[Core Advantages]
High efficiency and energy savings: The temperature of underground water sources changes little with the seasons. By using groundwater as the cold and heat source for the unit, during summer cooling, the condensing temperature of the unit can be lowered; and during winter heating, the evaporating temperature of the unit can be raised, thereby effectively improving the unit’s energy efficiency ratio. Heating.
At this time, for every 1 kW of electrical energy consumed, more than 4 kW of thermal energy can be produced, resulting in an energy utilization efficiency four times higher than that of other heating methods. The unit can automatically adjust its load according to external demand, ensuring that the unit’s energy output matches the external load precisely.
Integrated heating and cooling for convenience and ease of use: The unit can both produce chilled and hot water, providing cooling and heating for comfort air-conditioned spaces such as office buildings, hospitals, and shopping malls. It can also supply hot water at temperatures above 50°C, meeting the demand for domestic water in buildings.
Easy installation: The unit does not require a boiler or cooling tower, thereby avoiding the pollution and waste generated during boiler operation.
Noise and mold growth; adopts a large temperature difference design to save groundwater usage and energy consumption.
[Working Principle]
A water-source heat pump unit uses bodies of water as both cold and heat sources, achieving efficient energy transfer through a reversed Carnot cycle. During summer cooling, the unit absorbs waste heat from the user’s system and discharges this heat into the water body via the refrigeration cycle. In winter heating mode, it extracts low-grade thermal energy from the water body, raises its temperature using a compressor, and then supplies heated water to the user’s system. By circulating a working fluid, this system facilitates heat exchange between itself and the water body, making it a renewable energy utilization technology.
Keywords:
Screw-type water-source heat pump unit series
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