Definition: Self-contained refrigeration system mounted on vehicle to maintain temperature-controlled cargo space. Can be diesel-powered, electric, or direct-drive.
Components:
- Refrigeration compressor
- Condenser (heat rejection)
- Evaporator (cooling unit)
- Power source (diesel engine, electric motor, or vehicle PTO)
- Electronic controller
- Insulated cargo body
Capacity Sizing:
Determined by:
- Cargo volume and insulation
- Desired temperature range
- Ambient temperature (design conditions)
- Altitude (Gauteng requires 15-20% larger capacity)
- Door opening frequency
Types:
- **Van units**: 1-3 kW capacity, small delivery vehicles
- **Truck units**: 3-12 kW capacity, rigid trucks
- **Trailer units**: 8-20 kW capacity, articulated trailers
Major Brands: Carrier Transicold, Thermo King, Zanotti, Twister, Spheros
Related Terms: Diesel TRU, Electric TRU, Direct Drive TRU, Transport Refrigeration
Find Services: TRU dealers, service providers, parts suppliers