Patent ID: 11885537
Assignee: COPELAND EUROPE GMBH
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The method according to claim 7, wherein setting the opening degree of the economizer valve to a value calculated by using at least the third operation mode comprises:
if the determined temperature of the refrigerant in the discharge line is below a tenth threshold, setting the opening degree of the economizer valve to a value calculated from the determined pressure of the refrigerant at economizer heat exchanger;
if the determined temperature of the refrigerant in the discharge line is above the tenth threshold and below an eleventh threshold, setting the opening degree of the economizer valve to a value calculated from the determined pressure of the refrigerant at economizer heat exchanger, the determined temperature of the refrigerant in the discharge line, and the superheat value; and
if the determined temperature of the refrigerant in the discharge line is above the eleventh threshold, closing the economizer valve and stopping operation of the compressor.