RESEARCH ON SIMULATION MODEL OF DISTRIBUTED PARAMETER AIR SOURCE HEAT PUMP BASED ON PID-BISECTION COMBINATION CONTROL ALGORITHM

Gong Guangcai; Li Bolin; Zhou Fuyu; Huang Xiwen

doi:10.19912/j.0254-0096.tynxb.2020-1129

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (7) : 16-21. DOI: 10.19912/j.0254-0096.tynxb.2020-1129

RESEARCH ON SIMULATION MODEL OF DISTRIBUTED PARAMETER AIR SOURCE HEAT PUMP BASED ON PID-BISECTION COMBINATION CONTROL ALGORITHM

Gong Guangcai¹, Li Bolin¹, Zhou Fuyu², Huang Xiwen³

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Abstract

A two-stage compressed air source heat pump system thermodynamic model has been established in this paper by using distributed parameter method. Then we established a system-wide circulation distributed parameter model based on PID-binary combined control algorithm, and verified the accuracy of the model based on experimental data. The research results show that the average deviation between simulation data of COP and the experimental data of COP is 5.41% when the system model is operated in the two-stage compression heating mode. And the maximum deviation is under 15% in different operating modes. The deviations are all within the credible range, so the model can accurately reflect the law of system performance changing with external parameters. Comparing with the distributed parameter method model using only PID algorithm, the total iteration times of the model with using PID- bisection combined control algorithm are reduced by about 2.96 times. This model reduces computational effort greatly. The calculation speed of the model can be improved while ensuring the accuracy of the model.

Key words

air source heat pumps / thermodynamics / computer simulation / distributed parameter method / PID-bisection combined control algorithm

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Gong Guangcai, Li Bolin, Zhou Fuyu, Huang Xiwen. RESEARCH ON SIMULATION MODEL OF DISTRIBUTED PARAMETER AIR SOURCE HEAT PUMP BASED ON PID-BISECTION COMBINATION CONTROL ALGORITHM[J]. Acta Energiae Solaris Sinica. 2022, 43(7): 16-21 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1129

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