| 摘要 |
Disclosed is an organic Rankine cycle mixed working medium applicable to high-temperature exhaust waste heat recovery of an internal combustion engine, comprising the following components in percentage by mass: 20% to 32% / 68% to 80% of n-butane/CO2, 20% to 32% / 68% to 80% of iso-butane/CO2, and 15% to 27% / 73% to 85% of n-pentane/CO2. The mixed working medium is physically mixed at normal temperature to fill a system. The mixed working medium is a natural working medium, an ODP value is equal to zero, a GWP value is small, and the mixed working medium has a good environmental protection property. Moreover, the mixed working medium also meets A2 safe working medium standards in the ISO817-2010 standard and the American ASHRAE34-2010 standard, and has higher safety. The critical pressure and critical temperature of the mixed working medium are proper, the heat efficiency under an organic Rankine cycle design working condition is higher than 14%, and the thermal performance is excellent. |
