Finite time thermodynamic model analysis of CTHP cycle system based on calculation

The development and application of finite time thermodynamics are summarized. It includes the optimization of thermal process and device performance under finite time and limited size constraints. The optimization parameters of the actual thermal system, such as the heat exchange area and the temperature of all levels of cold and heat sources, are summarized. The change law of the thermodynamic parameters of the CTHP cycle system and the relevant influencing factors of the best heating rate can be calculated and analyzed by establishing the finite time thermodynamic model of the CTHP cycle system. According to the time mismatch of energy, the application status of phase change materials is reviewed. Compared with the classical thermodynamics, its mathematical model is closer to the actual situation. Finally, it points out the application direction: for one kind of problems, the accuracy is slightly improved compared with the classical thermodynamics; the other one can solve the problem that the classical thermodynamics can not reflect the actual situation in terms of system performance evaluation.