How is the optimal refrigerant charge determined during the commissioning process?

The optimal refrigerant charge is determined during the commissioning process by considering factors such as system design, ambient temperature, and load requirements. This involves performing a series of tests, including pressure tests, temperature measurements, and flow rate measurements, to ensure that the system is operating within the manufacturer’s specifications. The commissioning process also involves verifying that the system is properly sized for the building’s cooling or heating load, and that the refrigerant charge is adjusted accordingly.