A direct evaporative closed external ice-heat pump air conditioning system consists of several key components, including a compressor, a four-way valve, a heat exchanger, an air-cooled heat exchanger fan, a high-pressure receiver, a dry filter, a liquid electromagnetic three-way valve, multiple expansion valves, one-way valves, a refrigerant-water heat exchanger, a gas-liquid separator, a closed ice storage tank, solenoid valves, and motorized control valves. These elements are integrated into the outdoor unit and the air conditioning terminal, along with water separators, pressure components, and the overall water circuit of the system.
The water inside the closed storage tank is connected to the water in the refrigerant-water heat exchanger's water circuit, forming a closed-loop external ice melting system. This design effectively prevents issues such as water backflow and reduces the burden on electromagnetic valves and electric adjustment systems caused by hydrostatic pressure.
One of the key advantages of this system is that it increases the evaporation temperature of the refrigeration cycle by an average of 3 to 5 degrees Celsius, resulting in significant energy savings. The system supports five different cooling modes: cooling using the ice cooler alone, cooling with both the cooler and ice chiller, and other combined operations. This flexibility not only enhances efficiency but also reduces the need for additional heating equipment, leading to lower initial investment costs.
By integrating the ice storage and heat pump functions, the system provides a more sustainable and efficient solution for both cooling and heating applications. It ensures stable operation, minimizes maintenance requirements, and improves overall system performance. This innovative approach makes it ideal for commercial and industrial environments where energy efficiency and operational reliability are critical.
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