共查询到20条相似文献，搜索用时 531 毫秒
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目前国家高度重视节能减排,煤矿企业作为耗能大户,抓好节能减排工作,成为当务之急。合同能源管理（EMc）模式是指由专业公司自带资金、技术,为企业实施节能技术改造。应用EMc合同能源管理模式是煤矿节能工作的大势所趋。孙村煤矿通过实施合同能源管理（EMC）模式进行节能技术改造,实现了在零投资的前提下,对矿井主通风电控系统进行了技术升级,做到“不花钱也能进行节能改造”,开辟了企业节能的新途径,节能效果明显,取得了良好的经济效益和社会效益。 相似文献
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述水泵变频调速节能原理,对某电厂工业水泵采用变频调速节能改造的措施和取得的节能效益进行分析,揭示了水泵采用变频调速装置进行节能改造具有很大的实践空间. 相似文献
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液压系统的节能设计已成为液压技术工作者所关注的重大课题.对液压传动的节能原理进行了阐述,介绍了节能液压元件、节能回路和节能液压系统的节能技术,为液压技术工作者更好地利用能源提供了参考. 相似文献
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陈勤根 《湖州师范学院学报》2009,(Z1)
通过对风机串联运行特点进行分析,指出风机串联运行节能控制存在的可能;通过工程试验找到风机串联运行节能运行优化控制数据,进行控制逻辑模块组态;对风机串联运行节能控制工程应用进行分析和评介. 相似文献
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高职化学教学培养学生“节能减排”意识探析 总被引：1，自引：0，他引：1
王卫红 《襄樊职业技术学院学报》2008,7(6):65-66
根据全民节能减排的重要性,针对高职学生的从业特点,以结合课程内容,渗透节能减排理念;开展主题活动,内化节能减排意识;利用实验教学,强化节能减排意识为落脚点,对化学教学中培养学生的节能减排意识进行了探讨和分析。 相似文献
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当代大学生节能减排意识与行为调查分析 总被引：1，自引：0，他引：1
创建节能减排型校园是我国节能减排的主要行动之一。本研究对高校大学生节能减排意识和行为进行问卷调查与分析。调查结果表明,在节能减排行动中,当代大学生有较强的节能意识,但节能行为相对薄弱,呈现出＂知＂强＂行＂弱的不对称性。而且大学生在宿舍和教室的节能减排意识与行为差异较大。此外,通过SPSS统计软件分析得出大学生的节能意识... 相似文献
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在现代工程学领域中,节能环保技术以其独特的优势得到了广泛的应用。现代工程学中节能环保技术的应用形式主要有两种,一种为节能环保新型建筑材料的应用,另一种为节能环保建筑新技术的应用。本文针对近年来现代建筑工程施工过程中主要运用的节能环保技术和材料的特点进行分析,并结合国家节能减排和环境保护政策调整的有关要求,就如何更好地在现代建筑工程中应用节能环保技术进行了研究。 相似文献
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在介绍了液电阻调速器的基本原理的基础上,通过长兴发电有限责任公司脱硫增压风机液电阻调节节能技术应用实例,从设备选型、控制策略、性能参数等多方面着手以提高节能效率,并在改造后进行节能测试、定量的分析,认证了增压风机液电阻调节节能技术的节能效果. 相似文献
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运用文献资料、逻辑分析等方法对我国建筑节能形式和存在的问题进行分析,并提出相应的节能策略,在进行建筑节能时不但要注重建筑细节的设计,更要注重这些细节的落实,建立切实可行且有效地激励处罚制度和完善的节能标示,避免以点概面和节能虚无化,提出建筑节能不但要注重过程还要关注结果和后续,在建筑节能后期管理时要加强对节能理念的宣传,在建筑工程施工当中需要综合运用各种节能技术,对建筑工程的各个方面进行维护,把建筑节能作为一项长期的系统化工程,运用各方持续的协调努力和实际落实.以期通过节能技术在建筑领域的广泛运用可以为我国的节能环保事业做出一定的贡献. 相似文献
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针对三套加氢精制装置用能存在的不足,采取了装置间热联合、优化改进换热网络、充分利用低温热等措施。实现汽油加氢、航煤加氢两套装置的热量集成,汽油加氢的富余高温位热量正好用于航煤加氢装置高温位热量需求,柴油加氢装置低温热也得到了更有效的利用。三套装置经节能改进后,年节约能量488．893 MJ ,节能效果显著。 相似文献
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缪明基 《泰州职业技术学院学报》2014,(1):52-54
为了充分利用 HF 转炉高温烟道气的热量,将现有精馏再沸器加热系统进行改造,采用循环热水加热取代原蒸汽加热,循环热水再与烟道气进行热交换,回收利用烟道气的余热,达到节能的效果。余热利用系统改造实施后不仅显著降低装置的蒸汽消耗,同时提高了精馏加热操作的稳定性,大幅延长了再沸器的使用寿命。 相似文献
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A lack of experience in operation is one of the major difficulties associated with the use of advanced energy saving distillation
methods. The detailed operational studies of an ideal internal thermally coupled distillation column (ITCDIC) were carried
out in this work paved the way for further control and design studies and its practical application.
Project supported by National Environmental Protection Bureau of China (Huan-Ke-Ke, 1997, No 006) 相似文献
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Short path distillation (SPD) is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.In this paper,through measuring the phase-averaged velocity distributions with a conditional sampling method of the particle imaging velocimetry (PIV), the liquid flow field that affects the heat and mass transfer of evaporating thin-film in an SPD evaporator is investigated.Measured results show that the flow velocities decrease rapidly apart from the wiper at different wiper velocities, the maximum velocity appears before wipers, and the quicker the wiping, the larger the flow velocity. Meanwhile, the evaluation of numerical calculations is carried out.The measured velocity distributions indicate clearly the effect of the wiper both on the flow field along its moving direction and on the vortices behind the wiper.Simulation data show that the performance of liquid flow field on the heating surface not only agrees with the experimental results well,but also can give further more information, such as the distribution of turbulent kinetic energy.In this study,turbulent kinetic energy mainly distributes before wipers and laminar flow appears far away from the wipers. 相似文献
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Short path distillation (SPD) is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products. In this paper ,through measuring the phase-averaged velocity distributions with a conditional sampling method of the particle imaging velocimetry ( PIV), the liquid flow field that affects the heat and mass transfer of evaporating thin-film in an SPD evaporator is investigated. Measured results show that the flow velocities decrease rapidly apart from the wiper at different wiper velocities, the maximum velocity appears before wipers, and the quicker the wiping, the larger the flow velocity. Meanwhile, the evaluation of numerical calculations is carried out. The measured velocity distributions indicate clearly the effect of the wiper both on the flow field along its moving direction and on the vortices behind the wiper. Simulation data show that the performance of liquid flow field on the heating surface not only agrees with the experimental results well, but also can give further more information, such as the distribution of turbulent kinetic energy. In this study ,turbulent kinetic energy mainly distributes before wipers and laminar flow appears far away from the wipers. 相似文献
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A novel heat-integrated distillation scheme on pilot scale for producing C5 foaming agent, a mixture of isopentane and pentane in a certain proportion, was proposed with the aid of process simulation. Compared with the conventional distillation scheme, C5 foaming agent was directly separated at the top of the original isopentane or pentane column in the novel scheme, instead of first refining the two isomerides to high purities and then mixing them into final products. This improvement reduced the difficulty of the separation and avoided meaningless exergy loss caused by re-mixing, which finally contributed to an energy-efficient design by a big margin. Moreover, the column grand composite curves(CGCCs)were used to modify all distillation columns, indicating that there is potential to improve the energy efficiency further. Therefore, double-effect, or heat-integrated distillation was also adopted. Energy and exergy analyses were then conducted to evaluate the effectiveness of the proposed scheme for the purpose of energy saving. The simulation results of the conventional distillation scheme were in agreement with its on-site counterpart. Analyses showed that the novel heat-integrated scheme reduced hot utility by 27.12%,, cold utility by 24.49%,, and total exergy loss by 23.95%,. 相似文献
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精馏和反应过程的节能,对于减少能源消耗,降低生产成本和保护环境具有十分重要的意义。在精馏过程中可以采用最适宜回流比操作,采用最佳进料状态,使用中间冷凝器和中间再沸器,高效精馏、热泵精馏。合理安排多组分物料分离流程,直接利用过程热量及开发应用高效换热器等措施。在反应过程中应重视反应途径的合成,反应器的合理选择和高效反应器的设计开发、适宜反应条件的选取和优化等问题。 相似文献
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