棉织物手感值的模糊综合评判研究

利用模糊综合评判数学模型对棉织物的手感值进行了计算与分析，这种方法简单、可靠，与主观评估结果有很好的一致性，为纺织生产的质量判断提供了便利。     

Quantifying the potential of automated dynamic solar shading in office buildings through integrated simulations of energy and daylight

The façade design is and should be considered a central issue in the design of energy-efficient buildings. That is why dynamic façade components are increasingly used to adapt to both internal and external impacts, and to cope with a reduction in energy consumption and an increase in occupant comfort. To gain a complete picture of any façade’s performance and subsequently carry out a reasonable benchmarking of various façade alternatives, the total energy consumption and indoor environment need to be considered simultaneously. We quantified the potential of dynamic solar shading façade components by using integrated simulations that took energy demand, the indoor air quality, the amount of daylight available, and visual comfort into consideration. Three types of façades were investigated (without solar shading, with fixed solar shading, and with dynamic solar shading), and we simulated them with various window heights and orientations. Their performance was evaluated on the basis of the building’s total energy demand, its energy demand for heating, cooling and lighting, and also its daylight factors. Simulation results comparing the three façade alternatives show potential for significant energy reduction, but greater differences and conflicting tendencies were revealed when the energy needed for heating, cooling and artificial lighting were considered separately. Moreover, the use of dynamic solar shading dramatically improved the amount of daylight available compared to fixed solar shading, which emphasises the need for dynamic and integrated simulations early in the design process to facilitate informed design decisions about the façade.     

准噶尔盆地夏9井区成岩圈闭油藏特征

对准噶尔盆地夏9井区油水分布现状及成岩作用、储集物性纵横向变化规律、构造样式及其变化等的综合研究表明,成岩遮挡是控制夏9井区油水分布的关键因素,准噶尔盆地夏9井区成岩圈闭油藏是一种独具特征的隐蔽油藏。成岩遮挡的强度决定着油气能否成藏和成藏的规模,而遮挡强度又取决于储层的物性条件。物性条件越好,遮挡强度越低,故成藏规模与储集物性成负相关关系。随着物性变好,成藏规模越来越小,以致最后不能成藏。     

低度浓香型酒机械冷冻除浊工艺的探讨

低度酒在生产销售中,遇低温易出现失光、混浊等现象,利用低度酒香味成分的低温析出特性,对半成品低度酒进行机械式冷冻处理。根据处理后半成品口感及理化指标变化对其进行调味。     

某工程桩基地质构造带问题及处理

断裂构造带历来受到地质和工程界的重视。如果在工程灌注桩施工时才遇到地质断裂构造带问题 ,则要采取合理措施保证工程正常施工。介绍某建筑在桩基施工时发现的构造带问题及处理方法 ,供同行借鉴     

Quantifying the added value of BiPV as a shading solution in atria

Building integration of photovoltaics (PV) has long been acknowledged as a key application for PV in developed countries. The avoided use of comparably priced alternatives such as polished or cut stone in commercial facades enables PV to be applied often at little or no additional cost. The use of semi-transparent PV modules within commercial atria represents an interesting application in this respect as they can be used to replace traditional shading solutions which often have a high maintenance burden. However, compared to standard double glazing, an element incorporating either mono or poly crystalline PV cells in a glass-glass construction comes at a cost premium. To justify such an application there must be significant added value in the PV solution. This paper critically appraises a semi-transparent PV atrium which links two administration buildings at the University of Southampton, enclosing the main campus reception desk. Choosing PV laminates for the atrium roof has multiple benefits for the building users and the wider University, such as electricity generation, solar shading, environmental and technology statements, enhanced comfort and prestigious office workspace. This paper compares alternative shading solutions for the atrium and discusses user perception of the building and the atrium’s impact on their personal workspace. It is shown that PV in commercial atria does not always have to be considered as a ‘luxury’ option. With appropriate consideration of added value factors its selection can be justified in terms of both cost and carbon footprint.     

SA/CL-1-EP型阀门定位器的在线更换与思考

针对PV1021A阀门定位器SA/CL-1-EP更换过程中出现的问题,改变分析问题的思路,使故障得以处理,并总结了处理过程的经验教训。     

局部遮挡条件下的光伏阵列防逆流措施选择

对于光伏发电单元,阴影的遮挡可能导致有逆流通过光伏组件,使组件发热损坏。为了防止逆流的产生,通常的做法是在组件回路设置防反二极管。而设置防反二极管可能导致设备体积增大、工程造价增加、汇流设备温度升高等问题。是否设置防反二极管以及防反二极管的设置位置是工程设计中的重点问题。本文以光伏组件的工程应用模型为基础,给出了在局部遮挡条件下逆流的计算方法,包括不设置防反二极管以及防反二极管设置在直流配电柜的逆流计算方法,根据计算结果以及生产厂商提供的光伏组件的参数,来配置防反二极管,优化设备选型。     

基于粒子群遗传算法的光伏MPPT控制研究

局部阴影条件下,光伏阵列的功率特性曲线会出现多个峰值,传统的MPPT跟踪算法容易陷入局部极值点,无法准确地跟踪到最大功率点。粒子群算法具有很强的全局搜索能力,可以有效解决多峰寻优问题,但是普通粒子群算法容易出现收敛速度慢、早熟现象。提出一种改进的粒子群遗传（IPSO-GA）算法,该算法的惯性权重与学习因子随着迭代次数不断改变,可以同时兼顾算法的局部搜索与全局寻优能力,并且引进遗传算法的交叉、变异操作以增加种群多样性。仿真结果表明,改进算法在多峰最大功率跟踪过程中,具有良好的跟踪速度与寻优精度。     

关于电热水壶连盖处金属杆是否需要进行温升考核的辨析

在电热水壶温升考评中,由于各认证检测机构在对标准和制造商产品设计理念的理解上存在分歧,往往导致产品合格评定结果不一致。本文通过对比电热水壶有或无金属杆的使用体验和使用者实际使用调查,分析标准要求和产品设计理念,针对连盖处金属杆是否需要按照GB 4706.1-2005中短时握持手柄相关条款进行考核的问题进行了辨析。