指数曲线贮仓的设计剖析

贮仓是许多工业过程中的常用设备，起拱是贮仓使用时常出现的故障，如何解决起拱问题是贮仓设计的关键，除常采取增大仓壁倾角、设置破拱装置等方法外，设计成曲线贮仓也是行之有效的措施之一。分析了指数曲线贮仓的工作原理和特点，建立了仓壁指数曲线方程，阐述了设计步骤与注意事项，并举例说明。     

Supporting the design process with hypergraph genetic operators

In this paper an evolutionary technique is proposed as a method for generating new design solutions with genotypes represented in the form of hierarchical hypergraphs. Such hypergraph-based evolutionary design requires the adaptation of traditional evolutionary operators like cross-over and mutation. This paper presents an attempt at defining modified cross-over and mutation operators that act on hierarchical hypergraphs. The application of the proposed transformations is illustrated on examples of designing floor layouts and furniture with the use of the evolutionary method.     

Empathic negotiations through material culture: co-designing and making digital exhibits

Abstract

This article introduces a case study undertaken in the indigenous Penan community of Long Lamai, Upper Baram, Sarawak, Malaysia. In this community, there is concern about the negative image other cultural groups hold of the Penan. This case study explores co-design as a means to invite community members, together with a designer, to explore the identity that they would like to present to people outside the community. In preparing for an exhibition to challenge perceptions, it turned out to be important to embrace the culture of the community to facilitate self-expression, introducing new concepts such as technological interventions and design probes to stimulate reflection and creativity. However, it was indigenous material culture, when actively and encouragingly supported by the designer, that had a key role in developing the co-design and, with it, empathic understanding between designer and community.     

Radial gas mixing in a fluidized bed using response surface methodology

Radial gas mixing in a fluidized bed was studied using response surface methodology (RSM), which enables effect examinations of parameters with a moderate number of experiments. All experiments were conducted in a 0.29-m ID fluidized-bed cold model. The gas dispersion process within the bed is described using the dispersed plug flow model. Pure carbon dioxide was used as the tracer gas, continuously injected into the center of the bed by a point source. The downstream radial tracer concentration profile was measured using a gas chromatograph.The radial gas dispersion coefficient, D_r, was well correlated with operating parameters and the particle and gas properties: (U−U_mf)/U_mf, H_s/d_b, φ_d, and Ar, with a determination coefficient R² of 0.966. Effect test indicates that the dimensionless characteristic velocity, (U−U_mf)/U_mf, has the most significant influence on D_r, while the static bed height to bed diameter ratio, H_s/d_b, is less remarkable. The interactions of (U−U_mf)/U_mf with the distributor open-area ratio, φ_d, and with the Archimedes number, Ar, both play important roles. An evolutive response surface model was proposed to describe the radial gas mixing in the bubbling/slugging fluidization regimes.     

矿山工程设计可靠性研究

本文讨论了矿山工程设计中地质储量、矿山工程建设、工艺系统、露天矿投资等的可靠性计算方法,据此可对矿山能否达到设计规模及预期效益作出评价,从而可采取相应对策。     

铜陵一冶环保治理工程的设计

介绍冶炼烟气制本系统环保治理工程的工艺设计及生产运行情况。污水处理系统采用中和曝气加铁盐除砷工艺，引进了戈尔膜过滤器。尾气处理系统，采用石灰中和法，引进动波洗涤技术和关键设备。环保治理工程投产后，废气均达标排放。     

太阳能供热系统优化设计的相关问题研究

随着我国建筑总量和建筑能耗的快速增长,传统的供热方式已难以满足建筑供热的需求,而利用太阳能为建筑物供热,则可获得良好的节能和环保效益。就太阳能供热系统优化设计的相关问题进行了分析和研究,以期能为太阳能供热技术的推广和应用提供一定的理论依据。     

建筑电气设计中消防防火审核探讨

防火审核是建筑电气设计审核中的一个重要组成部分,要严格按照相关的防火规范设计和审核其设计,为建筑安全打下坚实的基础。分析、探讨了电气系统设计中防火审核的方法和相关技术,并提出了相关的设计对策和建议,以期能为相关人员提供参考。     

户内变电站三维设计应用研究

目前,户内变电站普遍采用二维设计,整个工程设计依靠设计人员的空间想象力和工程制图技能完成三维空间设计,这种方法缺乏对设计质量的有效控制,已难以适应目前各电网公司对设计精细化的需求。户内变电站三维设计具有直观、智能等特点,在适应了复杂的户内变电站设计、不断压缩的设计周期和设计资料的数字化移交等要求的同时,完善了工程设计人员充分表达设计思想的手段,是一种能提高项目质量的助推器,也是实现变电工程全寿命周期管理的有效工具,更是未来变电工程设计的发展趋势。     

变电站电气二次系统自动化设计分析

通过分析自动化变电站的特点,探讨了变电站电气二次系统的自动化设计,以期为变电站二次系统的设计人员提供参考。