Cold Link Africa November/December 2017 | Page 45

EVENTS AND EXHIBITIONS INCORPORATING COLD CHAIN A Hydro-Joule unit is mounted to the side of the truck and is powered via a hydraulic pump, driven by a clutch independent engine power take off (PTO). Once the system is operational, the hydraulic pump delivers high-pressure hydraulic fluid to a hydraulic motor, which in turn powers an AC generator and produces the 400VAC/50Hz needed to power the cooling unit. The driver has the ability to switch the system on and off from the cabin by means of an auxiliary PTO switch. At this point, the cooling unit can run off both its own diesel engine and its electric standby motor. However, by powering the unit from the more efficient, more environmentally friendly truck engine, it wi