Achieving High Engine Efficiency for Heavy-Duty Diesel Engines by Waste Heat Recovery Using Supercritical Organic-Fluid Rankine Cycle

Thermodynamic Analysis of a Ship Power Plant Operating with Waste Heat Recovery through Combined Heat and Power Production

“…The supercritical ORC ensures the use of low temperature exhaust gas waste heat, maintaining the pinch point at 15 °C; this scenario does not occur during a steam cycle. These results agree with those of Teng et al [46].…”

A comprehensive design methodology of organic Rankine cycles for the waste heat recovery of automotive heavy-duty diesel engines

“…The detailed operating conditions of the engine at B50 load are summarized in Table 1. The energy balance for this system can be written in the following way: (1) Where: is the mass flow rate, is the lower heat value of the fuel, are the powers and are the heat losses listed by categories. Observing the scheme, the gas flow that leaves the combustion chamber splits in two secondary streams.…”

“…Despite the substantial improvements of diesel engine efficiency over the last few decades, a considerable amount of energy is still rejected to the ambient [1]. These losses, depending on engine operating conditions, are in the order of 50% of fuel energy [2]; thus a significant margin of improvement on the total system efficiency is still available.…”

Potential for Improving HD Diesel Truck Engine Fuel Consumption Using Exhaust Heat Recovery Techniques

“…In the case of heavy duty diesel engines, suitable for truck applications, one of the most promising technical solutions for exhaust gas waste heat utilization appears to be the use of a "Bottoming Rankine Cycle" [17,18]. A systematic approach for the use of Rankine Cycle installation for truck applications is dated back in the early 70's where a research program funded by US Department of Energy (DOE) was conducted by Mack Trucks and the Thermo Electron Corporation [19][20][21].…”