Abstract This paper presents numerical and experimental energy and exergy performance assessments of solar thermal (ST), photovoltaic (PV) and photovoltaic/thermal (PV/T) modules based on roll-bond heat exchangers having three different channel geometries: serial, parallel and bionic. The validation of a coupled numerical simulation encompassing the thermo-hydraulic and electrical properties shows that 78% of all the data lies within a ± 10% uncertainty. The thermo-hydraulic simulation shows that the lowest outlet-water temperature inside the absorber is for the case of the bionic absorber (average 44.1 °C vs. 46.5 °C for the serial). This geometry is also beneficial when considering pressure losses, since compared to the parallel configuration (average 778 Pa) the bionic has significantly lower pressure losses (average 385 Pa). The simulation of the electrical properties of PV/T with all three absorber types showed the highest average solar-to-electrical efficiency (14.5%) in the case of the bionic absorber compared to the PV/T with parallel and serial absorbers (14.4% and 14.3%, respectively). Finally, a set of experiments using the ST, PV and PV/T2 (the index 2 denotes a PV/T collector variant with a foil thickness of 0.3 mm, compared to the thickness of 0.4 mm for PV/T1, positioned between the absorber and the PV cells) modules showed that the PV module, coupled with a bionic absorber plate, achieves the highest average electrical (PV – 8.5% vs. PV/T2 – 9.9%) and exergy (ST – 4.4% vs. PV – 9.2% vs. PV/T2 – 12.7%) efficiencies. Only in terms of the thermal efficiency, the PV/T is at a disadvantage to the ST (PV/T2 – 33.5% vs. ST – 61.4%) due to the air gap between the front glass and the absorber of the latter module.

中文翻译：

---

基于压焊式换热器的太阳能热、光伏和光伏热组件的能量和火用性能的数值和实验研究

摘要 本文介绍了基于具有三种不同通道几何形状的滚焊式换热器的太阳能热 (ST)、光伏 (PV) 和光伏/热能 (PV/T) 模块的数值和实验能量和火用性能评估：串联、并联和仿生的。包括热工水力和电气特性的耦合数值模拟的验证表明，所有数据的 78% 位于 ± 10% 的不确定性内。热工水力模拟表明，在仿生吸收器的情况下，吸收器内的最低出水温度（平均 44.1 °C 对比系列的 46.5 °C）。这种几何形状在考虑压力损失时也很有用，因为与平行配置（平均 778 Pa）相比，仿生具有显着更低的压力损失（平均 385 Pa）。与具有并联和串联吸收器的 PV/T（14.4%）相比，具有所有三种吸收器类型的 PV/T 的电气特性模拟显示，在仿生吸收器的情况下，具有最高的平均太阳能电效率（14.5%）和 14.3%）。最后，一组使用 ST、PV 和 PV/T2 的实验（索引 2 表示箔厚度为 0.3 毫米的 PV/T 集热器变体，而 PV/T1 的厚度为 0.4 毫米，位于吸收器之间和 PV 电池）模块表明，PV 模块与仿生吸收板相结合，实现了最高的平均电（PV – 8.5% vs. PV/T2 – 9.9%）和火用（ST – 4.4% vs. PV – 9.2 % vs. PV/T2 – 12.7%) 效率。仅在热效率方面，PV/T 与 ST 相比处于劣势（PV/T2 – 33.5% vs. ST – 61。