共查询到20条相似文献,搜索用时 125 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
本文结合铜陵公司实际能源消耗情况,分析了目前作为企业管理工作重要组成部分的节能管理工作面临的压力和责任,认为节能管理是企业降低生产成本,提高效益的手段之一。同时,针对目前普遍存在的问题,提出了当前形势下必须强化节能管理,推进企业技术改造,努力降低能耗,提高企业经济效益。 相似文献
9.
本文总结了一钢公司2002年度节能降耗的基本情况及主要做法,提出了近期公司对节能工作的具体设想,旨在公司能源管理水平有新的提高。 相似文献
10.
11.
《Energy Policy》2005,33(6):721-756
We have developed summary tables (sorted by heating- and cooling-degree-days) to estimate the potential of heat-island reduction (HIR) strategies (i.e., solar-reflective roofs, shade trees, reflective pavements, and urban vegetation) to reduce cooling-energy use in buildings. The tables provide estimates of savings for both direct effect (reducing heat gain through the building shell) and indirect effect (reducing the ambient air temperature).In this analysis, we considered three building types that offer the most savings potential: residences, offices, and retail stores. Each building type was characterized in detail by Pre-1980 (old) or 1980+ (new) construction vintage and with natural gas or electricity as heating fuel. We defined prototypical-building characteristics for each building type and simulated the effects of HIR strategies on building cooling- and heating-energy use and peak power demand using the DOE-2.1E model and weather data for about 240 locations in the US. A statistical analysis of previously completed simulations for five cities was used to estimate the indirect savings. Our simulations included the effect of (1) solar-reflective roofing material on building (direct effect), (2) placement of deciduous shade trees near south and west walls of building (direct effect), and (3) ambient cooling achieved by urban reforestation and reflective building surfaces and pavements (indirect effect).Upon completion of estimating the direct and indirect energy savings for all the locations, we integrated the results in tables arranged by heating- and cooling-degree-days. We considered 15 bins for heating-degree-days, and 12 bins for cooling-degree-days. Energy use and savings are presented per 1000 ft2 of roof area.In residences heated with gas and in climates with greater than 1000 cooling-degree-days, the annual electricity savings in Pre-1980 stock ranged from 650 to 1300 kWh/1000 ft2; for 1980+ stock savings ranged 300–600 kWh/1000 ft2. For residences heated with electricity, the savings ranged from 350 to 1300 kWh/1000 ft2 for Pre-1980 stock and 190–600 kWh/1000 ft2 for 1980+ stocks. In climates with less than 1000 cooling-degree-days, the electricity savings were not significantly higher than winter heating penalties. For gas-heated office buildings, simulations indicated electricity savings in the range of 1100–1500 kWh/1000 ft2 and 360–700 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. For electrically heated office buildings, simulations indicated electricity savings in the range of 700–1400 kWh/1000ft2 and 100–700 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. Similarly, for gas-heated retail store buildings, simulations indicated electricity savings in the range of 1300–1700 kWh/1000 ft2 and 370–750 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. For electrically heated retail store buildings, simulations indicated electricity savings in the range of 1200–1700 kWh/1000 ft2 and 250–750 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. 相似文献
12.
配电网节能降损的研究 总被引:2,自引:0,他引:2
电能损耗通常包括技术线损电量和管理线损电量。详细分析了线损产生的原因、危害,并从技术和管理角度给出了具体的节能措施,有利于增加电力企业效益,节约电能源。 相似文献
13.
14.
15.
根据近几年国家节能评估报告的编制要求,通过工程实例详细介绍了节能评估报告中电气专业电能消耗的计算方法,并提出无功补偿后,采用加权平均算法,重新进行负荷计算,再进行设备年耗电量的计算方法。加权平均算法还可应用于不同产品、不同工段的耗电量的计算。利用不同耗电设备所占比重不同,采用加权平均的算法,使节能评估报告中的计算结果更加科学、准确,更为接近项目的实际电能消耗量。 相似文献
16.
介绍了当前我国节能减排工作面临的严峻形势及开展节能减排的意义,通过对高耗能行业差别电价、脱硫电价、可再生能源电价附加、峰谷电价等多种电价的分析,指出我国应合理运用电价杠杆,稳步推进节能减排工作的开展。 相似文献
17.
天津市的能评工作始于2008年,笔者联系自己工作实际并结合天津市能评工作的进展,以天津市某工业企业的节能评估为例,项目电力消耗主要包括生产及辅助生产设备、照明、空调系统,用需要系数法计算耗电量,其中焊接变压器单独统计耗电量。研究表明,需要系数法计算耗电量趋于标准化,与负荷系数和同时系数相比有一定优势,具备可比性,避免了计算过程参数过多,减小了估算结果误差,具有很好的应用价值。 相似文献
18.
19.
20.
从精细化管理、废弃物再利用、节水和技术改造等多方面叙述了为降低炼焦工序能耗而采取的各项措施;分析了今后资源节约的潜力,为焦化厂利用节能新技术、新设备、新工艺进行改造,降低能耗指标指明了方向. 相似文献