Direct discharge of circulating cooling water from power plants will cause thermal pollution of ecological environment.By Fluent software

two-dimensional numerical simulation on the process of waste water being discharged into the received water was carried out

and the importance of recycling waste heat was analyzed from the point of the environment.Thus

comprehensive utilization of absorption heat pump and organic Rankine cycle power generation technology was put forward.The organic working fluid cyclohexane was taken as the cycle working substance and a mathematical model of waste heat recovery was established based on the first and second law of thermodynamics.By pinch analysis method

on the basis of Matlab software and Refprop programming simulation

the exergy losses of each component of the system was analyzed and the system parameters were optimized to obtain the optimal systematic cycle thermal efficiency

exergy efficiency and heat recovery efficiency.Furthermore

the feasibility of the scheme was demonstrated.The results show that this scheme not only can effectively recover part of low-grade waste heat from circulating cooling water in power plant

but also has great significance in environment protection.