STRUCTURE OPTIMIZATION AND ENERGY SAVING POTENTIAL INVESTIGATION OF NOVEL INTERGRATED VENTILATED PV ROOF

Peng Jinqing; Zhang Qiangzhi; Zhou Cong; Zhang Song; Zhang Fengjun; Luo Yimo

doi:10.19912/j.0254-0096.tynxb.2023-1334

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 24-32. DOI: 10.19912/j.0254-0096.tynxb.2023-1334

STRUCTURE OPTIMIZATION AND ENERGY SAVING POTENTIAL INVESTIGATION OF NOVEL INTERGRATED VENTILATED PV ROOF

Peng Jinqing¹, Zhang Qiangzhi¹, Zhou Cong², Zhang Song², Zhang Fengjun³, Luo Yimo¹

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Abstract

A novel integrated ventilated photovoltaic roof was proposed in the paper. To optimize the structure of the roof, a CFD model was established and verified by experiments. With the CFD model, the effect of the heat dissipation channel height H and module spacing D on the temperature distribution of the PV roof were investigated. The results show that the increase of H and D can strengthen the heat dissipation of the PV roof and effectively improve its power generation efficiency. Considering both of the heat dissipation effect and structural reliability, the optimal H and D are calculated to be 50 mm and 100 mm respectively. Furthermore, the heat transfer and energy generation characteristics of the PV roof were simulated with EnergyPlus. Compared to the conventional roof, its heat gain in summer and heat loss in winter were reduced by 48.0% and 27.1% in Xi'an, and the annual energy saving potential was as high as 198.0 kWh/m².

Key words

photovoltaic / roof / energy saving / BAPV / BIPV / structure optimization / thermoelectric properties

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Peng Jinqing, Zhang Qiangzhi, Zhou Cong, Zhang Song, Zhang Fengjun, Luo Yimo. STRUCTURE OPTIMIZATION AND ENERGY SAVING POTENTIAL INVESTIGATION OF NOVEL INTERGRATED VENTILATED PV ROOF[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 24-32 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1334

References

[1] DOMINGUEZ A, KLEISSL J, LUVALL J C.Effects of solar photovoltaic panels on roof heat transfer[J]. Solar energy, 2011, 85(9): 2244-2255.
[2] POULEK V, MATUŠKA T, LIBRA M, et al. Influence of increased temperature on energy production of roof integrated PV panels[J]. Energy and buildings, 2018, 166: 418-425.
[3] BRINKWORTH B J, SANDBERG M.Design procedure for cooling ducts to minimise efficiency loss due to temperature rise in PV arrays[J]. Solar energy, 2006, 80(1): 89-103.
[4] 朱群志, 司磊磊, 蒋挺燕, 等. 不同安装方式建筑光伏系统的经济性及环境效益[J]. 太阳能学报, 2012, 33(1):24-29.
ZHU Q Z, SI L L, JIANG T Y.Economical and environmental analysis of building photovoltaic systems with different installation styles[J]. Acta energiae solaris sinica, 2012, 33(1): 24-29.
[5] 龙文志. 光电屋顶结构设计[J]. 建筑技术, 2012, 43(4): 294-299.
LONG W Z.Design of photoelectric roof structure[J]. Architecture technology, 2012, 43(4): 294-299.
[6] WANG W L, LIU Y S, WU X F, et al.Environmental assessments and economic performance of BAPV and BIPV systems in Shanghai[J]. Energy and buildings, 2016, 130: 98-106.
[7] YANG H Y, ZHU Z J, BURNETT J, et al.A simulation study on the energy performance of photovotaic roofs[J]. ASHRAE Transactions, 2001, 107(2): 129-135.
[8] BRINKWORTH B J, CROSS B M, MARSHALL R H, et al.Thermal regulation of photovoltaic cladding[J]. Solar energy, 1997, 61(3): 169-178.
[9] 李晓刚, 郑杰, 陈树拳, 等. 附加式光伏屋顶温度场有限元模拟研究[J]. 建筑节能, 2015, 43(8): 22-24.
LI X G, ZHENG J, CHEN S Q, et al.Attached PV roof’s temperature with FEM simulation[J]. Building energy efficiency, 2015, 43(8): 22-24.
[10] KAPSALIS V, KARAMANIS D.On the effect of roof added photovoltaics on building’s energy demand[J]. Energy and buildings, 2015, 108: 195-204.
[11] KAPSALIS V C, VARDOULAKIS E, KARAMANIS D.Simulation of the cooling effect of the roof-added photovoltaic panels[J]. Advances in building energy research, 2014, 8(1): 41-54.
[12] 任建波, 李忠伟, 王一平, 等. 屋顶光伏与建筑负荷之间的相互影响[J]. 太阳能学报, 2008, 29(7): 849-855.
REN J B, LI Z W, WANG Y P, et al.Interaction between solar pv roofs and loads of the building[J]. Acta energiae solaris sinica, 2008, 29(7): 849-855.
[13] 刘艳峰, 王玥, 王登甲, 等. 屋顶光伏发电与遮阳综合节能分析[J]. 太阳能学报, 2019, 40(6): 1545-1552.
LIU Y F, WANG Y, WANG D J, et al.Study on comprehensive energy-saving of shading and photovoltaic performance of roof added pv module[J]. Acta energiae solaris sinica, 2019, 40(6): 1545-1552.
[14] CHOWDHURY M G, GOOSSENS D, GOVERDE H, et al. Experimentally validated CFD simulations predicting wind effects on photovoltaic modules mounted on inclined surfaces[J]. Sustainable energy technologies and assessments, 2018, 30: 201-208.
[15] NAGHAVI M S, ESMAEILZADEH A, SINGH B, et al.Experimental and numerical assessments of underlying natural air movement on PV modules temperature[J]. Solar energy, 2021, 216: 610-622.
[16] GB 50189—2015, 公共建筑节能设计标准[S]
GB 50189—2015, Design standard for energy efficiency of public buildings[S].
[17] GB/T8484—2020, 建筑外门窗保温性能检测方法[S].
GB/T8484—2020, Test method for thermal insulating performance for building exterior doors and windows[S].
[18] TANG H D, WU J H, LI C Y.Experimental and numerical study of a reversible radiative sky cooling PV window[J]. Solar energy, 2022, 247: 441-452.