A small vehicle powered refrigeration unit with electric fans supplied from vehicle battery has cooling capacity Q = 3.39 kW at standard conditions (0/+30 °C, compressor speed 2 400 RPM). It consumes compressor input P 1 = 1.7 kW and in addition to 27.4 A at 12 V dc. Thus P fans = 27.4 x 12 = 0.33 kW.