| In today's energy consumption,if the waste heat can be recycled and utilized,it can not only reduce the heat emission,but also save energy and protect the environment.The two main methods of waste heat utilization are heat pumps and low-temperature power generation,but the functions and the requirements of them are different.The single high temperature heat pump and low-temperature power generation technology can not cope with the wide range of heat source temperature fluctuations and discontinuous operation in the process of utilization,for such a situation,this paper designs and presents a dual function integration device and a dual function unit with low temperature generation and heat pump is established.With the integration of equipment as the starting point,we can achieve the quality deployment.In this paper,the influence factors of the equipment and system of the integrated technology are analyzed and studied,which mainly includes heat exchangers,crew machine,permanent magnet motor and working quality.Theoretical analysis of the above equipment and working fluid,respectively,from the perspective of high temperature heat pump and low temperature power generation and heat transfer performance of equipment,pressure on the performance,power generation and power capability and so on to make detailed analysis.For the factors that affect the integration technology,the theoretical research and analysis of the performance of the unit are analyzed from the water temperature of the cold and heat source,the water temperature of the evaporator and the water temperature of the condenser.Secondly,in order to ensure the safe and stable operation of the integrated technology,a positive and inverse transfer experiment is carried out for the core component 20 kW permanent magnet motor,and another 37 kW permanent magnet motor is connected with it.The 20 kW permanent magnet motor is used as the motor and generator respectively,and the experimental data are collected to analyze the performance of the permanent magnet motor.This experiment includes two modes: M1 and M2.The influence of condensing temperature on parameters such as the performance coefficient(COP),heat production and compressor power consumption is studied in M1 mode.By theexperiment result shows that the M1 mode can improve the quality of 36 ?,themaximum heat production can reach 30.22 kW.At the same time in the stable operation of the high temperature side of the water temperature can reach 86 ?,the COP is higher.The M2 model is a theoretical cycle based on the organic Rankine cycle(ORC),and the isentropic efficiency and power generation efficiency of the process are studied.The results show that the maximum generating capacity of M2 model is 3.74 kW and the power generation efficiency is 4.58%.The isentropic efficiency is between 56% and 81%,which provides a reliable basis for the design of the unit.In order to solve the problems of the access of the single unit performance parameters,using artificial neural network to predict the performance of the unit,respectively,using BP neural network to the M1 pattern of COP,the heat production and compressor power consumption forecast,RBF neural network to M2 model for predicting the capacity and efficiency,it is concluded that compared with the experimental data,prediction data has good accuracy. |
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