Refrigeration system with serial evaporators

An electronics cabinet for housing a plurality of air-cooled electronic components, said electronics cabinet comprising:

• an inlet section through which air is configured to flow into the electronics cabinet;
• an outlet section through which air is configured to flow out of the electronics cabinet;
• and
• a refrigeration system for controlling airflow around the electronics cabinet through at least one of the inlet section and the outlet section, said refrigeration system comprising,
• a refrigerant line positioned in at least one of the inlet section and the outlet section;
• a variable speed compressor for controlling the flow of refrigerant through the refrigerant line;
• evaporators positioned along the refrigerant line in a serial configuration with respect to each other, said evaporators being positioned in the at least one of the inlet section and the outlet section directly in at least one of the path of airflow supplied into the electronics cabinet and the path of airflow exhausted from the electronics cabinet;
• a controller for controlling the speed of the variable speed compressor;
• and
• at least one temperature sensor positioned to detect air temperatures at one or more locations with respect to the electronics cabinet, said at least one temperature sensor also being configured to transmit signals related to the detected air temperature to the controller, wherein the controller is configured to vary the speed of the variable speed compressor based upon the signals received from the at least one temperature sensor.