冷却排管的节能设计

从节能的观点出发，根据热力学原理和传递过程的理论，对冷却排管内湍流传热过程进行分析，研究损失随雷诺数的变化规律，探讨冷却排管的节能设计问题。     

新型阴极结构电解槽铝电解试验

针对传统铝电解槽极距已经达到低限,槽电压不能大幅度降低的关键技术难题,提出一种新型阴极结构铝电解槽．介绍了这种新型阴极结构电解槽的特点和工艺技术特征,以及在重庆天泰铝业公司168kA电解槽上进行工业电解槽试验的结果．统计期内3台试验电解槽平均槽电压为3．803V,平均直流电耗比同系列其他127台传统电解槽低1250kW·h／tAl,达到12101kW·h／tAl．     

Tradable certificates for renewable electricity and energy savings

Tradable green certificates (TGCs) schemes have been developed and tested in several European countries to foster market-driven penetration of renewables. These certificates guarantee that a specific volume of electricity is generated from renewable-energy source (RES). More recently certificates (tradable white certificates (TWCs)) for the electricity saved by demand-side energy-efficiency measures (EEMs) have been introduced in some European countries. Recent advances in information and communication technology have opened up new possibilities for improving energy efficiency and increasing utilization of RESs. Use of technological resources such as the Internet and smart metering can permit real-time issuing and trading of TGCs. These technologies could also permit issuing of TWC. This paper reviews current renewable TGC and TWCs schemes in Europe and describes the possibilities for combining them in an Internet-based system. In the proposed combined tradable certificate scheme, both RESs and demand-side EEMs could bid in real time through the Internet to meet a specific obligation. The energy savings from the demand-side measures would be equivalent to the same amount of green electricity production. The paper describes the needed common targets and obligations, the certificate trading rules and the possible monitoring protocol. In particular, the paper focuses on the TWCs verification issues, including the assessment of the baseline, as these poses additional problems for TWCs compared to TGCs.     

倡导低碳建筑,创造绿色生活

低碳建筑要求在建筑建造过程与运营过程均实现低碳排放。在建筑材料选用与设备制造、施工建造和建筑物使用的整个生命周期内,通过节能、节材、节地、节水和保护环境的措施充分体现低碳建筑的技术要求,减少化石能源的使用,提高能效,降低二氧化碳排放量。     

合同能源管理模式在宝钢的应用与分析

上海宝钢股份公司是大型高耗能企业,开展合同能源管理(EPC)是节能管理制度的创新。概述合同能源管理的概念、类型、优势以及国家对开展合同能源管理项目给予的政策优惠,重点介绍宝钢公司开展合同能源管理的情况及取得的成效,分析开展EPC项目关键因素及面临的问题,提出了对国内其它钢铁企业开展EPC的相关建议。     

新型阴极结构电解槽铝电解试验

针对传统铝电解槽极距已经达到低限,槽电压不能大幅度降低的关键技术难题,提出一种新型阴极结构铝电解槽.介绍了这种新型阴极结构电解槽的特点和工艺技术特征,以及在重庆天泰铝业公司168 kA电解槽上进行工业电解槽试验的结果.统计期内3台试验电解槽平均槽电压为3.803 V,平均直流电耗比同系列其他127台传统电解槽低1 250 kW · h/t Al,达到1 2101 kW · h/t Al.     

促进资源节约利用 发展节能省地环保型建筑

开展节能省地环保型建筑建设,是实现资源集约化、合理化利用转变发展方式战略的体现,党中央、国务院对此予以高度重视。文章明确推进此项工作的工作思路,回顾推进“四节一环保”的现状,提出下一步的全面工作。     

果蔬气调库制冷系统节能设计

根据现行气调库的能源利用率低、能耗大的特点,通过增设预冷间和减少气调间冷却时间、采用导热系数较低的库板并处理好防潮和气密性、选配耗电低装有变频器的压缩冷凝机组、小温差变风速的冷风机等方面对制冷系统进行节能设计,可降低制冷系统运行能耗,减少气调库运行费用。     

遮阳板在建筑节能中的应用研究

太阳辐射对供暖、空调负荷有重要的影响。在中国北方地区的建筑物的窗和墙面上，夏天希望尽可能的减少太阳照射，而冬天则希望多得到太阳照射。因此，遮阳板的合理设计就成为建筑节能的一个重要途径。该文根据天津地区典型气象年的气象资料，对该地区建筑南向窗遮阳板的构造进行建模分析，并对其节能前景进行预测。考虑到建筑物美观、遮阳板自身材料及建筑的层高等因素，在保证冬季的日照的前提下，天津地区南向窗遮阳板宽度宜取0．5～0．9m，距窗户上沿距离0．5～0．8m。安装遮阳板后，南向窗每个夏季可减少太阳辐射得热80～110MJ/m^2。     

Bionic optimization research of soil cultivating component design

The basic biomechanical laws that apply to the clawed toes of animals with powerful digging abilities and the optimal bionic design of curved soil cultivating components with an analogous contour were researched in a novel way. First, the curvature and profile of the inside contour line of a field mouse’s clawed toe were analyzed. The finite element method (FEM) was then used to simulate the working process in order to study the changing characteristics of the working resistance of bionic soil- engag- ing s...