ACU-Mobile Underground Fridgeplant- By M-Tech Industrial Patent nr.: 2007/04679 Mobile Modular Efficient Underground cooling The ACU is a Mobile Refrigeration Plant with two models available: 1. Mk 1 - 100 kW Cooling 2. Mk 2 - 250 kW Cooling What is an Air Cooling Unit (ACU)? - Uses direct expansion cycle - R407c refrigerant - Condenser heat rejected to a water stream - Saves de-watering pumping power by reducing cooling water usage - Heat rejection to water up to 40° C - Heat rejection to reject air streams via closed water loop and standard cooling car / heat exchanger - No connection to central refrigeration plant needed