区域热水采暖系统多目标稳态在线优化控制的动态仿真

提要通过创建直接连接区域热水采暖系统数学模型和多目标稳态在线优化模型,对此系统不同控制策略进行动态模拟。仿真结果显示单纯应用室外气候补偿控制不能获得预期的室温舒适性和节能效果,而采用基于多目标稳态在线优化控制策略不但能满足室温舒适性目标,且可获得近16%的节能效益。     

鄂西武陵山区乡村聚落景观营构传统研究

鄂西武陵山区乡村聚落地域特色鲜明,以其乡土景观形态为研究对象,归纳总结风景营构传统的概念以及要素构成。通过类型学的物质空间形态分析方法,从宏观尺度解读地貌特性对乡村风景基调的影响、控制;从中观尺度探索"山–房–田–水"的空间布局机制;从微观尺度挖掘乡村聚落空间要素类型、形态特征和场地营建传统,揭示了乡村聚落景观物质空间形态表象下的形态演进机理,并为传承鄂西武陵山区风景营构传统提供理论支撑。     

明清南京城南水系与商业区布局研究

自洪武定都南京以降,直至太平兵燹,南京一直是江南地区重要的消费型城市,商业区主要集中于城南秦淮河、东吴运渎、青溪、杨吴城壕等河道沿岸地区。本文基于地方志、明清小说等文史资料,以实证研究方法,探讨明清城南水系与南京城南商业区的布局,旨在加深对明清南京的进一步认识,并为城市传统商业街区的保护与更新提供参考与依据。     

Biomass for residential and commercial heating in a remote Canadian aboriginal community

Most residents of Canada's 300 remote communities do not have access to natural gas and must rely upon higher cost and/or less convenient heat sources such as electric heat, heating (furnace) oil, propane, and/or cord wood. This research sought to determine the techno-economic feasibility of increasing biomass utilization for space and hot water heating in remote, off-grid communities in Canada and abroad using a two-option case study approach: 1) a district energy system (DES) connected to a centralized heat generation energy centre fuelled by wood chips; and 2) a decentralized heating option with wood pellet boilers in each individual residence and commercial building. The Nuxalk First Nation Bella Coola community was selected as a case study, with GIS, ground surveys, and climate data used to design DES routes and determine heat demand. It was determined that biomass has the potential to reduce heat costs, reduce the cost of electricity subsidization for electrical utilities, reduce greenhouse gas emissions, and increase energy independence of remote communities. Although results of the analysis are site-specific, the research methodology and general findings on heat-source economic competitiveness could be utilized to support increased bioheat production in remote, off-grid communities for improved socio-economic and environmental outcomes.     

Integrated landscape management and the complicating issue of temporality

Abstract

Landscape has become widely accepted as a concept for embracing the natural sphere as well as human society. There are, however, challenges in implementing the somewhat overarching rhetoric. This article takes a conceptual and deconstructive approach and elucidates complications in integrated landscape management, with a certain focus on landscape and time. Cases from some European areas, where integrative planning instruments are applied, serve as examples. The drawing of borders and the categorisation of areas are central aspects in understanding what constitutes integration, implying that negotiations and the weighing of different values are vital elements in integrated landscape management. Landscape management is inevitably an activity in the present, which is why landscape management needs to be based on good knowledge about the present conditions. In order to retain landscape qualities it is necessary to continuously reveal contemporary processes and reconsider and elaborate on functions and contexts that connect humans and their physical environment.     

淠史杭灌区水稻干旱指标研究

本文利用多种方法,对试验资料进行分析,总结出适用于淠史杭灌区干旱评价的3种指标.     

开发川西致密碎屑岩气藏的钻井完井液技术

在提出适合川西致密碎屑岩双重介质储层的低损害优质钻井液基础上,再结合屏蔽式暂堵技术来实现保护储层的目的。在ＭＰ－７井的应用表明,对于川西非常规的致密碎屑岩双重介质储层,采用储层保护措施后,经加砂压裂改造后产能提高幅度很大     

注入水缓蚀阻垢剂KL0305A及其应用

在原用双组份双包装缓蚀阻垢剂ＫＬ０３０５的基础上研制了单一包装的性能更好的改进型缓蚀阻垢剂ＫＬ０３０５Ａ,本文介绍了ＫＬ０３０５Ａ的室内性能评价结果及在克拉玛依油田五区南注入水处理中应用的情况。ＫＬ０３０５Ａ在五区南注水中具有良好的缓蚀阻垢效果,也能适应克拉玛依油田其它各区块注入水的水质。     

贵金属浆料测评系统概述

贵金属浆料品质的测评系统由新近发布的浆料规范和系列测试方法国家标准组成。测试方法包括固体含量,粘度,细度,方阻,分辨率,可焊性和耐焊性,附着力的测定。同时与国内外相关技术比较,分析和评价系统的技术特点。     

从池州孝肃街的保护更新规划探讨"历史风貌片段"

从“城市发展”与“历史碎片”的碰撞中引发出对于“历史风貌片段”的探讨。文中具体以池州市教肃街保护更新研究为例,讨论了历史风貌片段保护与发展的现状、意义、原则与方法,并初步提出了保护与改造的一些具体的方法和途径。