基于层次分析法的夏热冬冷地区大型商业建筑空调冷热源方案选择

对于夏热冬冷地区层出不穷的大型商业建筑,其冷热源选择是一个多因素影响的问题,过分追求经济性的冷热源选取方法是片面的。针对镇江某大型综合商业广场定性考虑其建筑类型和所在气候带特点上,利用层次分析法定量分析优选了空调冷热源,以此为以后类似建筑选取冷热源提供一种切实可行的参考办法。     

医院冷热源及其系统设计浅谈

分析了医院的用能特点及传统的集中冷热源存在的问题,认为只有改变医院传统的集中冷热源及其系统,以整栋建筑为目标综合平衡冷热量,才能有效节能,提出了适用于医院用能特点的冷热源和相应的技术措施.     

北京某新建综合办公楼的冷热源方案比较

空调冷热源系统对建筑的初投资和运行费用影响很大。设计初期应根据建筑物所在地的气候条件、负荷特点和周边能源情况等应用条件,对多种空调冷热源方案进行综合分析和比较,选出较为适合的空调冷热源方案。针对北京某新建综合办公楼项目情况,对比分析了4种空调冷热源方案的初投资和运行费用,从而得出了最佳的冷热源方案。     

医院建筑冷热源用能的设计与优化

本文首先分析了医院建筑的用能状况,总结了医院建筑冷热源的用能和负荷变化特点。而后,以医院整体建筑的用能量为控制目标,提出了医院建筑冷热源的设计和运行优化管理原则。最后针对医院建筑手术室用冷热源的实际情况,对大、小冷热源的设置及其关联性进行了经济技术分析,并对医院建筑采用可再生能源方案进行了论述。     

扬州某综合办公楼空调系统冷热源方案的分析研究

空调系统冷热源的选择对建筑的初投资及运行费用影响很大。针对扬州某综合办公楼项目情况,选取常见的3种冷热源方案:空气源热泵的VRV系统、冷水机组加热水锅炉系统、土壤源热泵系统等进行了初投资和运行费用的经济比较。结果表明:土壤源热泵系统的综合效益最大。该项目的冷热源采用了土壤源地埋管热泵系统,并带有热回收技术,充分利用冷凝热来制取生活热水,既节省了能耗又减少了对环境的热排放,完全符合现代建筑绿色节能的要求。     

哈尔滨市民用建筑空调冷热源状况调查与分析

调查了哈尔滨市27栋典型空调建筑的冷热源状况,分析了各类建筑应用的冷热源形式及其所占比例、冷热源的组合方式及比例,指出了哈尔滨市空调冷热源的发展方向。     

世博中心多模式建筑能源系统应用保障技术研究

世搏中心建筑能源系统采用江水源热泵、冰蓄冷、水蓄冷等多项空调冷,热源绿色节能技术。在世博会期间应对大客流、高负荷量、高安全性需求,面临超常规运行条件下高复杂能源系统应用保障的诸多难题。本研究将多模式复杂工况建筑能源系统综合应用保障技术与世博会连续运营阶段的实际需求有机结合,讨论相应空调冷,热源系统的风险评估、风险避让、运行监测、控制策略、维护保养、故障诊断、效果评价体系等能源保障策略,从而为建筑能源系统血急预案提供科学的技术支撑。     

冷热源系统精细化自控管理方案

冷热源的自控系统管理建筑能耗的60%,是实现节能减排重要措施之一。冷热源的自控技术也是建筑设备监控系统当中最复杂、技术要求最高的部分,通常由多个控制器组网通信逻辑控制实现,对控制器之间的变量同步和编程能力要求较高。可信自控公司采用自研的B0控制器编程语言接近自然语言模式,简化实现复杂的系统的数据采集、过程控制、逻辑控制功能。     

某企业办公楼改造项目冷热源方案经济分析

在确定空调系统冷热源时,用户对一次性投资往往比较重视,而忽略了其它方面,设计工作者在确立冷热源方案时必须作出全面的考虑,提出正确适合的意见帮助用户确定冷热源方式.本文结合一个既有建筑改造设计项目,对冰蓄冷、电蓄热相结合的冷热源方案进行了全面的技术经济分析.     

BA系统在建筑节能方面的应用

从建筑的主要能耗系统：冷热源系统、空调新风系统、照明系统三个方面,结合某项目的具体案例,就如何利用BA技术实现建筑物内的冷热源、通风空调、照明等设备的有效控制,以达到系统节能进行了具体分析,从而充分发挥BA系统在节能方面的作用。     

Economic impact modelling of smart specialization policy: Which industries should prioritization target?

In this paper we argue that it is necessary to apply economic impact models in smart specialization policy in order to come up with reliable economic impact estimations. Solutions suggested in the smart specialization (S3) literature for economic impact assessments cover the economic effects only partially. To estimate the impacts in the industrial, regional and national dimensions in their entirety the application of specifically designed economic models becomes necessary. We extended the geographic macro and regional (GMR)-Hungary policy impact model with additional features to make this model applicable for S3 economic impact estimations. In our policy simulations we illustrate how the application of this model helps policy-makers in the prioritization process.     

区域地震灾害经济损失评估模型研究

通过对国内地震灾害经济损失评估模型比较,针对现有模型评价指标单一问题,不能有效体现区域内城市地震灾害经济损失的差异,构建了区域地震灾害经济损失评价指标体系,并利用PCA方法对其指标进行分析,得到各个指标的权重值,进而构建了多指标影响下的区域地震灾害经济损失评价模型。最后以1996-2009年历次破坏性地震灾害数据为例进行分析,将计算结果与已有的评估模型结果进行对比,验证了该模型的有效性和可行性。     

经济发展、人口增长与耕地资源动态变化研究──以南京市为例

本文通过对经济发展、投资增长、人口增加与耕地资源动态变化弹性关系的分析,发现１９８０～１９９７年间随着南京市社会经济的不断发展,国民经济的投资报酬率及土地产出率不断提高,据此作者建立了动态回归模型,进一步验证了耕地资源动态变化与经济发展、投资增长、人口增加之间的数量关系,根据这一数量模型还预测了２０００年及２０１０年南京市的耕地资源保有量。通过与耕地资源动态变化一元回归模型预测结果的比较分析,两者相差甚微,故预测结果可信。     

公路运输发展对国民经济增长贡献率测算方法与应用研究

在分析公路运输对国民经济增长影响的基础上,吸取生产函数法基本思想,构造出类似于索洛增长速度方程的数学模型,测算公路运输对经济增长的贡献率。并应用吉林省18年的数据标定模型,计算出1998年吉林省公路运输发展对区域经济增长的贡献率。     

浅谈近代典型工程项目管理模式

结合国家经济体制和市场情况,对近代典型工程项目管理模式进行了介绍,旨在不断改革完善当前工程项目管理模式,使其与社会经济相适应,并积极探索创新工程项目管理模式的方向和路径。     

马尔可夫链在企业经济预测上的应用

为了科学的预测企业所关心的各项经济指标 ,以便为企业的未来做出正确的决策方案 ,需用适当的数学模型和方法对企业的经济活动进行定量的研究 .基于经济活动的复杂、多变性及带有许多随机性因素的特点 ,针对这两种常见的经济问题 ,分别建立了相应的马尔可夫链模型 .应用马尔可夫链的相关理论、巧妙的构造转移概率矩阵 ,只通过简单的矩阵运算 ,便迅速解决问题 .实例表明 ,马尔可夫链模型及方法在企业经济活动分析中是可行和适用的 ,可广泛用于解决企业中常见的预测及决策问题 .     

Beyond neoclassical orthodoxy: A view based on the new economic geography and UK regional wage data

Abstract.  The article examines the performance of two competing non-nested models of regional wage variations in Great Britain, one motivated by the Solow-Swann neoclassical growth model which assumes constant returns to scale, the other by new economic geography theory, which assumes internal and external increasing returns. Both models also include controls for labour efficiency variations across regions. The empirical analysis, which is based on the bootstrap J test, shows that the neoclassical model does not reject the new economic geography specification, but the converse is not true and the model with a basis in new economic geography has significantly superior explanatory power. This adds support to the notion that in order to correctly understand differential regional economic development, we should move beyond neoclassical orthodoxy and that an increasing returns stance is more appropriate. However, the article also highlights some limitations of new economic geography theory.     

A test of a linear programming model of agriculture

Conclusions The pattern of agricultural production and land use specified by the linear programming model was greatly different from the actual pattern existing in 1963. I believe that the application of this model or similar models to other areas would not approximate actual patterns of production or resource use. Therefore, it is concluded that the assumptions upon which the model is based are inadequate for the construction of models aimed at estimating the economic feasibility of water resource investments. Further work on the model itself is necessary before it can be properly used in the predictive sense required in economic feasibility studies.In order to improve the model, it will be necessary to quantify additional constraining relationships that are generally encountered by the type of economic units being studied. Care should be taken not simply to build empirical realities into the model so as to reduce differences between the model results and existing production and resource use. Rather the type of constraints needed appear to require such studies as how economic units tend to react to opportunities for increased profits in situations where changes in habits would be required for the realization of these increased net returns.Studies which accurately estimate the economic efficiency of water resource investments need to consider how economic units will react to changes in water resources. The use of mathematical programming models in these studies serves to make this need more apparent.Richard Howes and Associates     

Location choice and land use in an isolated state

The purpose of this study is to develop an urban model describing an economic dynamics of three parts — the CBD, the residential area and the agricultural area — in an isolated urban system. The system consists of three — agricultural, industrial, and service — sectors. The model describes dynamic interactions among capital and knowledge accumulation with endogenous urban structure. The model may be considered, in a broad sense, as a synthesis of new urban economics (Alonso's model), urban economic growth theory with endogenous knowledge and Thünen's economic system. We show that the urban dynamics may have either a unique or multiple equilibria and may be either stable or unstable, depending upon creativity of various economic activities. We also examine effects of changes in some parameters upon the long-run urban structure.     

A framework for modeling interregional population distribution and economic growth

"An integrated model is proposed to capture economic and demographic interactions in a system of regions. This model links the interregional economic model of Isard (1960) and the interregional demographic model of Rogers (1975) via functions describing consumption and migration patterns. Migration rates are determined jointly with labor force participation rates and unemployment rates."