Yongqiang Han

Structure and Parameters Optimization of Organic Rankine Cycle System for Natural Gas Compressor Exhaust Gas Energy Recovery

In the paper, the structure and working principle of free piston based organic rankine cycle (ORC) exhaust gas energy recovery system have been presented in detail. A GT-Power software based prototype model has been established in order to find out the effects of different parameters. Comparisons under different thermo parameters of heated and cold work material have been analyzed thoroughly. Simulation results show that the thermo parameters of heated work material are very sensitive to net heat efficiency.

Experimental studies on pressure drop performance and regeneration safety of diesel particulate filter

The accuracy of the regeneration timing is very important for safe and complete regeneration of diesel particulate filter (DPF). In this research, pressure drop performance and regeneration safety was studied experimentally. The relation between loading time and accumulated soot mass in the DPF was obtained, and the pressure drop versus exhaust volumetric flows curves under different soot loads were obtained. They could provide basic data on the exact soot mass estimation for properly setting start timing of a regeneration control. From the drop to idle test, it was observed that the soot mass limit of the DPF used in this research was above 7g/L. Uncontrolled DPF regeneration was safe when the soot loading level was 7g/L.