Main accessories
（1）Four-way valve
The use of special heat pump four-way valve of well-known brands has a good reversing effect and the quality is guaranteed.
Special electronic expansion valve can automatically adjust the flow of refrigerant and high efficient heating, accurately control the temperature and save energy, and at the same time can control the suction pressure tube. Use special heat pump fan motor of well-known brands to achieve good heat dissipation effect Evaporator copper tube adopts high purity seamless copper tube , which has long service life and is not easy to crack and corrode . At the same time , the unique cross-pipe mode can ensure the uniform liquid receiving of the coil . The closecontact between fin and copper tube can better improve the heat exchange effect , and coil inside adopting single and double reflux system according to the requirement of flow velocity , which has low water resistance and good heat exchange performance . （5）Copeland compressor The energy efficiency of copeland compressor is 12% higher than that of the most advanced piston compressor, and the unique design has the ability to withstand liquid shock and impurities. At the same time, the pressure difference between spaces is small, and the leakage is small, no suction and exhaust valve, small resistance, no other volume clearance, low noise and small vibration. （6）High Efficiency Tank Special high-efficiency tank coil adopts high-efficiency finned tube , and the heat exchange effect is higher than that of smooth tube .At the same time , the compact spiral structure of coil ensures that the refrigerant can conduct to heat exchange more fully , the water channel flow is uniform , it is not easy to freeze and scale , the oil return is smoother, and the energy efficiency is better.
