恒温型自驱动集热器建模与仿真分析
摘要：提出了一种恒温型自驱动太阳能空气集热器(CTSD-SAC),通过TRNSYS16.1进行建模和仿真研究。仿真基于4组秦皇岛市夏季典型气象参数进行，采用控制变量单因素分析方法，讨论了不同设定温度工况下CTSD-SAC的运行特性，分析了内置PV板(太阳能电池板)面积对CTSD-SAC性能的影响。结果表明：CTSD-SAC的流量降幅与设定温度呈非线性关系；太阳辐照度与室外温度均影响CTSD-SAC的出口流量，且室外温度的影响更显著，但是对系统的光热光电效率影响不明显，体现了CTSD-SAC运行性能的稳定性。分析表明PV板面积每增加0.1 m2,光热效率降低10%。仿真通过PID控制实现了集热器出口温度稳态误差小于2.11%,上升时间短于15 min。
关键词：太阳能集热器温度控制单因素分析PID控制光热效率光电效率自驱动
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[4] HAO W,LU Y,LAI Y,et al.Research on operation strategy and performance prediction of flat plate solar collector with dual-function for drying agricultural products[J].Renewable energy,2018,127:685- 696.
[5] KABEEL A E,ABDEKGAIED M,FEDDAOUI M.Hybrid system of an indirect evaporative air cooler and HDH desalination system assisted by solar energy for remote areas[J].Desalination,2018,439:162- 167.
[6] SIDDIQUI F R,ELMINSHAWY N A S,ADDAS M F.Design and performance improvement of a solar desalination system by using solar air heater.Experimental and theoretical approach[J].Desalination,2016,399:78- 87.
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[10] SINHA S,TIWARI G N.Theoretical evaluation of commercial solar hot water system for constant delivery temperature[J].Energy conversion and management,1992,33(2):125- 133.
[11] TIWARI A,DUBEY S,SANDHU G S,et al.Exergy analysis of integrated photovoltaic thermal solar water heater under constant flow rate and constant collection temperature modes[J].Applied energy,2009,86:2592- 2597.
[12] MISHRA R K,TIWARI G N.Energy and exergy analysis of hybrid photovoltaic thermal water collector for constant collection temperature mode[J].Solar energy,2013,90:58- 67.
[13] RASHMI M,TIWARI A,TIWARI G N,et al.Performance evaluation of a semi-transparent photovoltaic thermal (SPVT) inverted absorber flat plate collector (IAFPC) for constant collection temperature (CCT) mode[J].Solar energy,2019,186:382- 391.
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[18] TILAHUN F B,BHANDARI R,MAMO M.Design optimization and control approach for a solar-augmented industrial heating[J].Energy,2019,179:186- 198.
[19] HU J,ZHANG G,ZHU Q,et al.A self-driven mechanical ventilated solar air collector.Design and experimental study[J].Energy,2019,189:116287.
[20] REMUND J,MÜLLER S,KUNZ S,et al.Meteonorm handbook part I:software[Z/CD].Bern:Meteotest,2014:12- 14.
[21] KLEIN S A,BECKMAN W A,MITCHELL J W,et al.A transient system simulation program[Z/CD].Madison:University of Wisconsin-Madison,2007:47- 49.
Modelling and simulation analysis of a constant temperature self-driven collector
Abstract: In this paper, a constant temperature self-driven solar air collector(CTSD-SAC) is proposed, which is modeled and simulated by TRNSYS16.1. The simulation is based on four groups of typical meteorological parameters in Qinhuangdao city in summer. Using the single-factor analysis method of control variables, the operation characteristics of CTSD-SAC under different set temperature conditions are discussed, and the influence of the built-in PV board(solar panel) area on the performance of CTSD-SAC is analysed. The results show that there is a non-linear relationship between the flow rate decrease of CTSD-SAC and the set temperature. Both solar irradiance and outdoor temperature affect the outlet flow of CTSD-SAC, and the influence of outdoor temperature is more significant, but the effect on the photothermal photoelectrical efficiency of the system is not obvious, which reflects the stability of CTSD-SAC performance. The analysis shows that when the PV board area increases by 0.1 m2, the photothermal efficiency decreases by 10%. Through PID control, the steady-state error of collector outlet temperature is less than 2.11%, and the rising time is less than 15 min.
Keywords: solar collector; temperature control; single factor analysis; PID control; photothermal efficiency; photoelectrical efficiency; self-driven;
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