循环经济在赣州矿产资源开发与管理中的研究

如何利用赣州矿产资源优势发展本地经济,节约资源开采,充分利用现有资源,实现资源的循环利用,保持生态环境的良好发展具有重要意义。本文分析介绍了循环经济、赣州矿产资源及开发利用现状,并提出了实现矿业循环经济的具体措施。     

KM186型柴油机的研制开发

本文介绍了KM186型柴油机的开发背景及设计目标,主要零部件的优化设计过程以及通过大量试验所获得的各项良好指标。     

Energy policy implications of waste management in various sectors of the economy—An analysis based on physical systems theory

This paper aims to bring into focus the impact of waste management in different sectors of the economy on some important policy issues related to energy. In a multi-sector economy, the total energy demand consists of the direct energy demand of human population, the intermediate demand of other sectors and the energy wastes which cannot be recycled and have to be rejected to nature. These sectorial interlinkages in the economy, due to their cascading effects, are very important for studying the real impact of waste generation or waste recycling on the energy demand and prices. A generalized multi-sector economy model which combines the concepts of input-output economics with waste management (input-output-waste model) has been developed based on physical systems theory. The results of sensitivity analysis of this model are presented in this paper, which suggest the need to have a serious look into waste management practices in all sectors of the economy from an energy policy point of view.     

适合生态涵养区农业发展的林下经济模式*——以北京市怀柔区为例

山区是首都的生态涵养区,在落实首都山区生态功能定位的同时,促进山区经济发展是当前面临的重要任务。以怀柔区为例,在阐述林下经济内涵的基础上,对生态涵养区发展林下经济进行了条件分析,论述了适合生态涵养区发展的两种林下经济模式,即林菌模式和林禽模式,并对发展林下经济提出了一些建议。     

信息系统建设项目的成本收益分析

介绍了成本比较法和期望净收益法在信息建设项目成本收益分析中的具体应用 ,提出了解决具体项目的方法和步骤。     

绿色经济与我国纺织产业国际竞争力的提升

阐述绿色经济与提升我国纺织产业国际竞争力之间的关系。分析了清洁生产投入对节能减排效果和产业国际竞争力的作用机理;以纺织业为实证对象,验证了清洁生产对纺织产业国际竞争力的作用。指出:以清洁生产为主的环境保护投资对产业国际竞争力的影响是积极的,发展绿色经济给提升传统纺织产业国际竞争力带来机遇。认为:实施清洁生产可以通过技术变革和治污减排两个作用机制提升我国纺织产业国际竞争力。     

Thoughts on the development of low-carbon furniture standards system

The development of Low-carbon Economy has been widely recognized around the world.Building lowcarbon furniture standards system is an important content of furniture standardization, which is helpful to promote energy conservation, reduce the carbon footprint, and then prevent global warming.This paper analyzes status quo of furniture standards of China, states the importance of development of low-carbon furniture standards system, put forward some ideason development of the low-carbon furniture standards system through all links in the low-carbon furniture production.     

抽汽冷凝式汽轮机凝液系统问题分析及探讨

通过对抽汽凝汽式透平的凝液系统存在的问题进行分析及探讨,提出建议和改进措施,以确保机组在较好的经济性下安全、平稳运行。     

Techno-economic evaluation of thermo-chemical biomass-to-ethanol

Bio-ethanol has received considerable attention as a basic chemical and fuel additive. Bio-ethanol is presently produced from sugar/starch materials, but can also be produced from lignocellulosic biomass via hydrolysis-fermentation route or thermo-chemical route. In terms of thermo-chemical route, a few pilot plants ranging from 0.3 to 67 MW have been built and operated for alcohols synthesis. However, commercial success has not been found. In order to realize cost-competitive commercial ethanol production from lignocellulosic biomass through thermo-chemical pathway, a techno-economic analysis needs to be done. In this paper, a thermo-chemical process is designed, simulated and optimized mainly with ASPEN Plus. The techno-economic assessment is made in terms of ethanol yield, synthesis selectivity, carbon and CO conversion efficiencies, and ethanol production cost. Calculated results show that major contributions to the production cost are from biomass feedstock and syngas cleaning. A biomass-to-ethanol plant should be built around 200 MW. Cost-competitive ethanol production can be realized with efficient equipments, optimized operation, cost-effective syngas cleaning technology, inexpensive raw material with low pretreatment cost, high performance catalysts, off-gas and methanol recycling, optimal systematic configuration and heat integration, and high value byproduct.     

上海某办公楼中全热回收转轮应用的技术经济性分析

从节能角度来看,排风热回收技术越来越受到重视。介绍了转轮式全热回收装置的结构和工作原理,并以上海某办公楼空调系统为例,计算出全年节省电费和初投资静态回收年限,得出结论：在上海这种空气湿度较大的地区,采用全热回收设备具有较大的节能效果。