A dual air and liquid cooling system, comprising: a controller; a dual air and liquid evaporator having: an air cooling section including an evaporator coil having a tube configured to receive refrigerant that removes heat energy from an air flow; and a liquid cooling section, in mechanical communication with the air cooling section, including an evaporator coil having a coaxial tube including an inner tube and an outer tube, the inner tube configured to receive a liquid flow, the outer tube configured to receive refrigerant that removes heat energy from the liquid flow and the air flow, where the refrigerant changes phase in the air and liquid cooling sections (11, 13) to remove heat energy from the air and liquid cooling sections (11, 13); and two or more control elements (8, 9), coupled to the controller and the dual air and liquid evaporator, including: a first control element configured to provide the refrigerant to the air cooling section and, responsive to the controller, control the phase of the refrigerant in the air cooling section to generate cooled supply air, and a second control element configured to provide the refrigerant to the liquid cooling section and, responsive to the controller, control the phase of the refrigerant in the liquid cooling section to generate cooled supply liquid and cooled supply air. a controller; a dual air and liquid evaporator having: an air cooling section including an evaporator coil having a tube configured to receive refrigerant that removes heat energy from an air flow; and a liquid cooling section, in mechanical communication with the air cooling section, including an evaporator coil having a coaxial tube including an inner tube and an outer tube, the inner tube configured to receive a liquid flow, the outer tube configured to receive refrigerant that removes heat energy from the liquid flow and the air flow, where the refrigerant changes phase in the air and liquid cooling sections (11, 13) to remove heat energy from the air and liquid cooling sections (11, 13); and an air cooling section including an evaporator coil having a tube configured to receive refrigerant that removes heat energy from an air flow; and a liquid cooling section, in mechanical communication with the air cooling section, including an evaporator coil having a coaxial tube including an inner tube and an outer tube, the inner tube configured to receive a liquid flow, the outer tube configured to receive refrigerant that removes heat energy from the liquid flow and the air flow, where the refrigerant changes phase in the air and liquid cooling sections (11, 13) to remove heat energy from the air and liquid cooling sections (11, 13); and two or more control elements (8, 9), coupled to the controller and the dual air and liquid evaporator, including: a first control element configured to provide the refrigerant to the air cooling section and, responsive to the controller, control the phase of the refrigerant in the air cooling section to generate cooled supply air, and a second control element configured to provide the refrigerant to the liquid cooling section and, responsive to the controller, control the phase of the refrigerant in the liquid cooling section to generate cooled supply liquid and cooled supply air. a first control element configured to provide the refrigerant to the air cooling section and, responsive to the controller, control the phase of the refrigerant in the air cooling section to generate cooled supply air, and a second control element configured to provide the refrigerant to the liquid cooling section and, responsive to the controller, control the phase of the refrigerant in the liquid cooling section to generate cooled supply liquid and cooled supply air.