Thermodynamic Evaluation of Energy Recovery System For Heavy Duty Diesel Engine by using Organic Rankine Cycle

Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering

卷:18

关键词: Organic Rankine cycle;    Internal combustion engine;    heat recovery;    sustainable energy;   

DOI  :  10.18038/aubtda.303809

来源: DOAJ

【 摘 要 】

The internal combustion engineis used daily for transportation and energy production beside their low thermalefficiency level. Most of the thermal energy in such engines is wasted.Therefore, energy recovery in diesel engines are crucial in order to enhancetheir performance and the environmental penalty. The present paper discusses theenergy recovery potential of internal combustion engine cooling system by usingorganic Rankine cycle (ORC). An  heavy-dutydiesel engine that has a maximum brake power rating of about 345 kW is selectedfor the energy recovery potential investigation. Around eighty different typeorganic fluid is considered as the working fluid. Operability margin of eachfluid as a function of  cooling systempressure is identified based on fix evaporator and condensation conditions. Themass flow rates required for each ORC system are computed together with thecycle thermal efficiencies for each cycle conditions. The results show thatsuch ORC system is capable of recovering up to 13.6% of the wasted heat whichcorresponds to a power recovery of about 24 kW and enhances the diesel enginebrake efficiency by 2.4%.

【 授权许可】

Unknown