Patent ID: 8186171
Filing Date: 2012-05-29
Classification: F25B

Abstract:
1. Method for controlling an intermittently supercritically operating refrigeration circuit ( 2 ) for circulating a refrigerant in a predetermined flow direction comprising in flow direction a compressor ( 4 ), a heat-rejecting heat exchanger ( 10 ), a control valve ( 12 ) associated to the outlet ( 14 ) of the heat-rejecting heat exchanger ( 10 ) and a control ( 16 ) for controlling the control valve ( 12 ), wherein, in order to achieve a continuous regulation of the high-pressure of the refrigerant at the outlet of the heat-rejecting heat exchanger, the method comprises the following steps: (a) in the subcritical mode, controlling the control valve ( (b) in the supercritical mode, controlling the control valve ( (c) in a border mode in a border region next to the critical point, controlling the control valve (