In this paper, the tube-fin evaporator used in diesel engine-Organic Rankine Cycle experiment is built, simulated and analyzed. By changing the inlet conditions on the shell side of the evaporator, the relationship between the internal heat transfer performance, flow performance and inlet conditions of the evaporator is analyzed. The heat transfer performance of the evaporator is analyzed by using Field Synergy Theory and the maximum pressure rise of the cross section of the front tube bundle(pm), the influence degree of ORC system on diesel engine is determined, and the matching relationship between the evaporator and diesel engine is evaluated. The results show that, due to the unique exhaust characteristics of diesel engine, the evaporator needs to coordinate with diesel engine, so as to achieve better heat transfer and flow performance, reduce losses and make full use of energy with little influence on the power performance and economy of diesel engine.
Keywords Organic Rankine cycle, tube-fin evaporator, diesel engine, performance analysis, waste heat recovery