Using transcritical/subcritical high-temperature cycles
Design the cycle loop based on the characteristics of high-temperature working fluids to expand the condensation temperature range (conventional heat pump condensation temperature ≤55°C, high-temperature heat pumps can reach 60-120°C).
Supercooling control technology
By using built-in subcoolers or economizers, increase the refrigerant's cooling capacity per unit mass, reduce the compressor discharge temperature, and prevent lubricant carbonization at high temperatures.
Under high-temperature operating conditions, the system experiences large fluctuations in pressure and temperature, requiring precise control logic:
Core control functions: Real-time monitoring of condensing pressure, exhaust temperature, and water outlet temperature; when parameters exceed limits, automatically adjust throttling devices (such as electronic expansion valves) and compressor speed to prevent system high-pressure alarms and shutdowns.
Auxiliary protection functions: Equipped with "high-pressure protection, high-temperature protection, overcurrent protection, and scaling warning"; some industrial models support remote monitoring, providing real-time feedback on operating status and reducing operation and maintenance costs.
Adaptation technology: Paired with EVI (Enhanced Vapor Injection) technology to raise the evaporation temperature in low-temperature environments. Even at -10°C, it can reliably output hot water above 80°C, expanding the applicability to colder regions.
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