Shanxi Yanchi Junior School-CO2 Cascade Heat Pump System

Location：Shanxi Yanchi Junior school

Units：LYDF-150XW （3pcs cascade CO2 heat pump）

Function：Offering Space heating

During the winter season, the temperature in the surroundings can drop as low as -35℃. However, we are able to provide hot water at a temperature of 75℃, which then returns at a temperature of 55℃. The radiator we use is of the old iron type and it is installed in a space that covers an area of 5000 square meters.

To achieve this, we utilize three pieces of CO2 air source heat pumps as the initial step. These heat pumps extract heat from the surrounding environment and supply water at a temperature of 30℃ to the screw water source heat pump, which acts as the second stage. The second stage heat pump then circulates heat throughout the building.

By implementing this system, we are able to significantly reduce carbon emissions and also save on energy costs.