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章桂琴 《中国环境管理干部学院学报》2010,20(1):45-47,55
秦皇岛经济技术开发区经济迅猛发展,为避免走发达国家"先污染,后治理"的老路,必须以科学发展观为导向,优化产业结构,提高资源利用效率,节能减排,加强工业污染源的治理,完善基础设施建设,实现企业清洁生产,建立生态工业园区,以生态文明建设为引领,不断提升循环经济水平和持续发展能力,从而达到提高人民生活水平和改善人民生活环境的目的。 相似文献
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应用SBM模型测算了中国27个制造业行业2001—2020年间的全要素能源效率值,采用核密度估计分析能源效率变化趋势,最后对各行业的节能潜力进行定量分析。结果表明:(1)样本期间内中国制造业及27个分行业能源效率值整体上呈平稳上升趋势,上升速度较为缓慢。(2)制造业内部各行业间能源效率差异明显,从高到低依次为技术密集型、劳动力密集型和资本密集型,同时各行业间的能效差距呈逐渐缩小的态势。(3)节能潜力高的行业主要集中在资本和劳动力密集型行业,其中化学原料和化学制品制造业节能潜力最高,通过提高技术水平、改善能源结构等方式来优化这些行业的发展路径是实现制造业节能降耗的关键。 相似文献
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以1992年、1997年、2002年、2007年和2012年的DMSP/OLS稳定夜间灯光数据以及2016年的Landsat遥感数据为数据源,对兰白西城市群的城镇建成区进行提取,并采用扩展强度指数、外部形态紧凑度、空间关联模型,对其空间扩展过程和特征进行分析。结果表明:城市群向心集聚的空间扩展趋势明显,呈现出以兰州、西宁为主要增长极的"核心—外围"空间格局。城市群内部各城镇空间扩展"外部延伸"和"内部填充"并存,在不同时期扩展的方式不同,其外部形态紧凑度也表现出不同的变化特征。尽管城市群空间扩展出现了扩散势头,但向心集聚的扩展模式依然是城镇空间扩展的主流。 相似文献
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发电厂闭式循环冷却水系统是采用钢筋混凝土结构自然通风冷却塔,其噪声污染治理是一个难题。本文以攀钢电厂双曲线自然通风冷却塔为例,介绍其噪声特性、控制措施及治理效果。 相似文献
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F. J. Wang H. W. Lin W. D. Tu C. H. Shiau Y. C. Hung 《International Journal of Green Energy》2017,14(2):157-161
Heating, ventilating, and air-conditioning (HVAC) systems in commercial buildings consume the largest amount of energy. Recent surge in energy cost necessitates constant re-evaluation of HVAC system for most of the buildings. The objective of this study is to present the strategic approach on energy saving analysis of the HVAC system and chiller sizing optimization for a library building. Energy modeling code (eQUEST) for buildings simulation has been applied to verify and predict the long-term energy consumption of HVAC systems. To improve the accuracy of simulation results, the actual performance curves of the chillers and pumps were the inputs of curve fitting data from on-site field measurements data. Energy consumption data acquisition from the building energy management system (BEMS) for one year has been conducted comprehensively to calibrate energy modeling and to quantify energy saving results. The results revealed good agreement between energy modeling and BEMS data with the error of less than 10%. Besides, energy savings through the chillers’ sizing based on cooling load profile could be achieved satisfactorily by utilizing energy modeling by using the actual chiller performance curve. The energy saving for HVAC system can be obtained satisfactorily at the saving of 110,362 kWh per year. It is expected that the study will stimulate a more robust investigation of energy-efficient and cost-effective HVAC system specific for library buildings. 相似文献
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Energy- and water-saving have been promoted as ways of saving money while there has been controversy about the effects (if any) of such measures on resident health. In public housing in the US, energy saving has taken the form of Energy Savings Performance Contracts (ESPC) that pay for renovations out of future savings. In an attempt to test feasibility and pilot research methods we conducted a study of the relationship between gas and water use, exterior heat sensor locations, and basement ventilation with indices developed from resident-reported living conditions and health symptoms in a single housing development. The data sources that we had available to us were not ideal. In particular, we were unable to obtain water use data that coincided in time with our health survey data. Also, we did not have enough surveys in buildings with high water or gas use and had to pool those buildings with other buildings for analysis. Nevertheless, we found several associations between our measures of energy use and resident reports of health symptoms. The associations that we found were generally in the direction that energy and water savings were associated with fewer symptoms and fewer environmental problems. There is a need for studies that obtain better input data but that generally follow the approach we developed. 相似文献
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Abstract Energy- and water-saving have been promoted as ways of saving money while there has been controversy about the effects (if any) of such measures on resident health. In public housing in the US, energy saving has taken the form of Energy Savings Performance Contracts (ESPC) that pay for renovations out of future savings. In an attempt to test feasibility and pilot research methods we conducted a study of the relationship between gas and water use, exterior heat sensor locations, and basement ventilation with indices developed from resident-reported living conditions and health symptoms in a single housing development. The data sources that we had available to us were not ideal. In particular, we were unable to obtain water use data that coincided in time with our health survey data. Also, we did not have enough surveys in buildings with high water or gas use and had to pool those buildings with other buildings for analysis. Nevertheless, we found several associations between our measures of energy use and resident reports of health symptoms. The associations that we found were generally in the direction that energy and water savings were associated with fewer symptoms and fewer environmental problems. There is a need for studies that obtain better input data but that generally follow the approach we developed. 相似文献
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The main objective of this paper is to compare indicators based on energy consumption and financial savings to rank strategies to save potable water in buildings. The method is based on potable water savings, embodied energy, energy consumption for operation, and investment feasibility analysis; and it was applied to a school in the city of Florianópolis, southern Brazil. The strategies considered to save potable water were rainwater, greywater, water-efficient appliances, and their combinations. The embodied energy was estimated using indices of embodied energy per mass of material, and labour. The indicators used to rank the strategies were potential for potable water savings, index between potable water savings and embodied energy or total energy consumption, net present value, internal rate of return, discounted payback, and index between potable water savings and initial costs. All strategies and combinations were feasible, but the use of water-efficient appliances was the best. Amongst the indicators used to rank the strategies, five of them led to the same ranking. Such indicators can be applied to rank potable water saving strategies in other types of buildings and climates. 相似文献
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Zhaleh Hedayat Bert Belmans M. Hossein Ayatollahi Ine Wouters Filip Descamps 《International Journal of Green Energy》2017,14(7):650-655
When designing energy efficient buildings it is useful to study existing climate—responsive building typologies. The wind towers or wind-catchers of Yazd city in Iran are typical examples of such a typology. Although many previous studies have investigated the performance of various types of wind catcher systems, studies based on a long-term real-life measurement can be rarely found. In this study a long-term whole year monitoring campaign on an existing full scale four sided wind catcher in Yazd was carried out in 2014–2015. Three prevailing wind directions were identified and the measured on-site wind speeds were used to estimate the wind induced natural ventilation potential of the tower. A shaft/tower airflow performance index was developed. The monitoring results were compared to the ASHRAE Standard 62:2001 ventilation rate requirement. Results show that the total ventilation rate of the wind tower surpasses the ASHRAE Standard requirements. Furthermore it shows that the shafts are exposed to the prevailing wind directions perform better. For more effective natural ventilation a wind tower with adaptable openings/shafts are proposed. 相似文献
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《International Journal of Green Energy》2013,10(2):209-225
Abstract China is a developing country experiencing rapid economic growth. In recent years, increased urbanization has caused a tremendous rise of the energy consumption of buildings, and a corresponding need is to save this energy. In this article, the technologies and laws relative to building energy saving in China were presented which include building construction, the compound building energy system, policies, and the law etc. In order to fulfill the three stages of energy saving plan in building construction in China, the principal methods for developing building energy saving are introduced. 相似文献
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我国政府高度重视生物质能的开发,第二代生物液体燃料是一种清洁可再生的生物质能源,较第一代生物质能源更容易获得,因此大力发展第二代生物液体燃料对改善我国能源结构,实现节能减排具有重要意义.本文从年净生物量大、耐干旱、耐盐碱等角度出发,选择出适合新疆发展的棉花、甜高粱及红柳三种第二代生物液体燃料原料植物,并在了解新疆自然条件及国家和新疆政策法规、规划的基础上,预测到2030年三种生物质能源作物生物量,为相关部门制定生物质能源政策提供参考. 相似文献
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Altamash Ahmad Baig Farshad Kimiaghalam Rakesh Kumar JuanLi Ma Alan S. Fung 《International Journal of Green Energy》2020,17(8):476-487
ABSTRACT An eQUEST model was developed to conduct a simulation study of a natural gas engine-driven heat pump (GEHP) for an office building in Woodstock, Ontario, Canada. Prior to the installation of the GEHP, the heating and cooling demands of the office building were provided by rooftop units (RTUs), comprising of natural gas heater and electric air conditioner. Energy consumption for both GEHP and RTUs were monitored for operation in alternating months. These recorded energy consumptions along with weather data were used in the regression analysis. The developed eQUEST models were validated and calibrated with the regression analysis results with respect to the ASHRAE Guideline 14–2014. The eventual models were then applied to investigate the potential annual energy consumption, greenhouse gas (GHG) emission and energy cost savings achieved by using the GEHP in Woodstock, and other cities in Canada, particularly in Ontario. 相似文献