Engines that drive electrical generators and vehicles emit a lot of waste heat. This waste heat can be recovered in a bottoming cycle and used to improve the engine's overall efficiency. TIAX uses an organic Rankine cycle and patented, positive displacement expander for this purpose.
| Engine | Efficiency Improvement | Coupling to Engine |
|---|---|---|
| Truck Engine | 8 - 10% | Mechanical |
| Reciprocating engine for electrical generator | 8 - 10% | Electrical |
| Microturbine for electrical generator | > 20% | Electrical |