Patent ID: 7159409

Claim:
A method of operating a vapor compression system, the vapor compression system defining a closed fluid circuit in which a refrigerant is circulated and having operably disposed therein, in serial order, a compressor, a high pressure heat exchanger, an expansion device and a low pressure heat exchanger, said method comprising: applying a variable thermal load on a first one of the heat exchangers; monitoring the thermal load placed on the first heat exchanger; and controlling the operation of the system to limit the thermal load placed on the first heat exchanger when the thermal load exceeds a predetermined value, wherein controlling the operation of the system comprises controlling the interaction of a heat exchange medium with the first heat exchanger, wherein the heat exchange medium is air and controlling the interaction of the air with the first heat exchanger comprises controlling the operation of an air moving device in communication with the first heat exchanger, wherein controlling the operation of the air moving device comprises controlling the direction at which air is moved by the air moving device.