Answer: Kolant EVI (Enhanced Vapor Injection) heat pumps realize outstanding low-temperature performance via optimized refrigeration cycle and special structural upgrades.
In primo luogo, adotta una EVI enhanced vapor injection compressor with an economizer. Different from ordinary single-stage compression, it injects intermediate low-temperature refrigerant vapor into the compressor’s compression chamber. This achieves a quasi two-stage compression effect, effectively reducing the compression ratio and avoiding compressor overheating and power attenuation in frigid conditions.
Second, the vapor injection technology increases the overall enthalpy of the system. It supplements heating capacity, greatly weakening the performance drop that conventional heat pumps suffer in cold weather. The unit can maintain stable and strong heating output even at -25°C to -30°C.
In addition, it is equipped with low-temperature resistant core components, enhanced cold-resistant lubrication system and optimized heat exchange structure. These designs ensure smooth refrigerant circulation and reliable unit operation under extreme low ambient temperature.
Grazie a questi miglioramenti, le pompe di calore EVI mantengono un COP elevato e un'efficienza di riscaldamento stabile nei climi freddi, risolvendo perfettamente la scarsa resistenza al freddo delle pompe di calore normali.
