Pollen

This review deals first with basic knowledge about pollen, especially its biology, morphology and physiology, and then discusses the connection of pollen with medical problems such as hay fever (pollinosis). The next sections cover the historical development of methods for trapping and counting airborne pollen grains to produce reliable quantitative data, and the development of a European network of pollen-reporting stations.     

PESC电池扩散工艺的改进及分析

由于硅单晶质量的提高及背表面场和减反射膜技术的应用,电池的短路电流已接近理论极限值,因此其性能的改进就取决于发射区的优化.本文论述了一种改进的扩散工艺——二次扩散工艺.其主要特点是提高氧化温度,利用氧化过程的高温改善发射区杂质分布,从而减少“死层”的影响.文中分析并计算了二次扩散(氧化)后的杂质分布和结深的变化,并讨论了二次扩散对发射区少于复合的影响及工艺条件对发射区各参数的影响.     

太阳能利用技术现状及展望

本文系统地论述了目前世界上利用太阳能技术的最新进展，并展示了其诱人的前景。未来１０年，太阳能的研究与利用会“火热”一阵，以后会更热，直到聚变核能实现商业化。预计，太阳能将成为２１世纪的主要能源，到２０３０年世界电力的５０％将依靠太阳能。     

低成本消除相变储热材料分层的方法

通过对各种增稠剂的试验研究,选出白炭黑、凹凸棒土、水溶性聚合物CA—5三种增稠剂,可有效的防止相变储热材料分层。其中以水溶性聚合物CA—5效果最好,经热循环1500次后储热能力仅衰减27.16%。     

Study of space heating by dual-function solar collectors

A novel solar collector named dual-function solar collector （DFSC） has been proven feasible for sup-plying warm air for space heating in winter and hot water during none-heating season by theoretical and experimen-tal studies. While integrated with building, the DFSC becomes component of the envelope. Because complexly coupling of several heat transfer modes and subjecting to random weather condition, the thermal influence of DFSC on a building remains obscure. In order to investigate the effect of DFSC for passive and active heating, a demon- strating office building integrated with DFSC panels on the southern wall and roof has been built in Hefei, in the east region of China. A simulation project of the whole building system in winter was built by the software TRNSYS with the new component developed for DFSC and compiled into the TRNSYS library based on the validated theoretical method and experimental results from previous studies. The simulation results show that the energy supplied by the DFSC can meet the heating requirement at most of the time of a sunny day, except early morning. More than 30 % solar fraction can be provided during the whole heating season in Hefei, the value further increases to 59 % in a region of high solar irradiance, such as Lhasa. While active DFSC panels are operated to provide fresh warm air through ventilation system, the flow rate shows strong influence on the solar fraction of heating load. With appropriate operation scheme of the active DFSC, more energy savings and thermal comfort can be achieved.     

Improving the mid-infrared energy absorption efficiency by using a dual-band metamaterial absorber

In this paper, a dual-band mid-infrared metamaterial absorber was proposed to improve the energy absorption efficiency. Up to 99% absorption was obtained at 9.03 and 11.83 μm in the simulation, and each absorption band can be tuned by the dielectric spacing layer, i.e., the dielectric constant and its thickness. The dual-band absorption mechanism was analyzed, and the quite well absorption performance at large incident angles was also presented. The results of this study can be applied in the field of thermal absorbing and solar energy harvesting.     

太阳能电池组件封胶工艺研究

针对太阳能电池组件封胶工艺进行工业化生产的可行性在设备、技术、生产、工艺条件、材料、可靠性等方面进行研究.此课题还针对封胶工艺不良产生及解决方法进行了深入的理论和试验研究.试验证明,封胶生产工艺是可行的.     

110年来太阳黑子活动与南方低温冰冻灾害关系探析——以广东粤北地区为例

以2008年广东低温雨雪冰冻灾害天气及其影响为研究切入点,本文根据史料和气象资料分析了110年来广东地区出现的10次低温雨雪天气及灾害情况,认为太阳黑子活动与冰灾的产生有一定的相关关系.研究发现广东冰灾多出现在太阳活动谷年及其附近;冰灾与太阳黑子活动11年和22年的周期有相关性;太阳黑子活动谷年前后,则广东冰灾发生的机率会更高.     

槽式太阳能系统聚光镜面参数对聚光特性的影响研究

对槽式太阳能系统聚光镜面参数对聚光特性的影响进行了理论、模拟及实验研究。结果显示,平行光下聚光镜面厚度、焦距、折射率导致汇聚光线在焦线位置发生横向离焦偏移△X与纵向离焦偏移△Y,采用OriginPro拟合出具有高相关指数的实用经验公式,并通过TracePro仿真及以焦距1060mm、反射镜折射率1.5、开口宽度1 600mm的典型槽式系统为平台进行实验验证。此研究可为太阳能槽式聚光系统进一步的设计优化提供参考。     

Single sub-microwire solar cells based on the CdS-Cu2S and CdS-ZnS core-shell heterostructures

CdS sub-microwires with diameter of 200 nm were synthesized by a physical evaporation, Cu_2S and ZnS were decorated on CdS sub-microwires as shells by immersing the CdS core into Cu~+, Zn~(2+) and S~(2-)solutions,respectively. The single core-shell sub-microwires were separated individually on the regular Au pattern by the photolithography technique, and then two ends of the sub-microwires were well contacted with Au electrodes by using the electron beam lithography. The photovoltaic efficiencies of 4.54% and 1.40% were achieved by CdS-Cu_2S and CdS-ZnS core-shell heterostructure under AM 1.5 G illumination, respectively.