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在我们的日常生活中,汽车的使用已经相当普及,由于汽车尾气的排放而带给环境的一系列的影响却没有能够很好的解决。因此,对于汽车尾气能量的利用则成为了当今汽车技术发展的一个焦点问题,节能减排更是成为汽车发展的一个方向。 相似文献
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回收环境中的振动能量并转化为电能在近几年受到广泛重视。论文研究了一类回收环境中微振动能量的压电装置,优化设计了分布式压电悬臂梁结构,实验对比分析了不同连接方式、外部激励幅值、频率和集中质量对微振动能量回收效率产生影响。实验结果证实了优化后的分布式能量回收装置提高了宽带低频的现实振动环境中电量收集效率,具有工程应用价值。 相似文献
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文章介绍了板式换热器、液体循环式换热器及热管式换热器的能量回收方式,结合工程实例介绍热管式换热器在实验动物房中的应用及经济核算 相似文献
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汽车尾气净化技术浅谈 总被引:1,自引:0,他引:1
汽车尾气污染已日益成为大气的一个重要污染源,汽车尾气的治理自然也成了整个社会关注的焦点。分析了汽车尾气的主要成分,综述了汽油机和柴油的尾气净化技术。 相似文献
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阐述了液力透平能量回收技术在国内外相关行业的应用,对液力透平能量回收装置原理进行研究,以分体式透平能量回收装置在松南气田天然气净化溶液循环流程中应用为例进行分析,并且做出相应评价。 相似文献
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浅谈汽车尾气遥感监测技术的原理及应用 总被引:1,自引:0,他引:1
《企业技术开发》2015,(24)
佛山市的机动车数量增长非常迅速,而机动车带来的排气污染也对城市环境造成极其严重的影响,甚至成为主要的城市大气污染源,造成大气环境质量的恶化。在城市化的进程中,为了解决城市污染问题,必须对机动车排气污染进行控制。文章对汽车遥感监测技术及其原理进行了简要的介绍,并介绍了汽车尾气遥感监测系统的主要设置和组成部分,对汽车尾气遥感监测技术的应用领域进行了分析。希望能够更好地推广汽车尾气遥感监测技术,发挥其监控汽车尾气、改善空气质量的重要作用。 相似文献
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中国仓储业十大热点问题与十项对策建议 总被引:7,自引:0,他引:7
中国仓储协会干2006年7月7日在北京组织召开了有多家政府主管部门相关负责人、多位物流专家、20家仓储业相关企业负责人参加的现代仓储业“热点问题”座谈会。以仓储协会秘书处提交的《我国仓储业现状的多层面分析与发展现代仓储业应重点关注的几个热点问题》的书面报告为蓝本,与会代表围绕热点问题展开了热烈的讨论。会后,中国仓储协会会长沈绍基根据各方面的调查数据和座谈讨论的情况,概括出中国仓储业十大热点问题,并有针对性地提出发展现代仓储业的十项对策建议。这里我们刊发此文,以期引起对中国仓储业更为广泛的关注。[编者按] 相似文献
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美妙的想法及构思并没有完全带来成就,无论是家得宝的周雷蒙,还是美颂巴黎的聂文江,他们都未能给来自于西方的这些大型跨国建材企业在中国寻找到根本的发展途径。他们似乎并不知道中国消费者到底需要什么,也不知道不同级别的消费者的习惯,更谈不上帮助"外来的和尚"念好中国这部"经" 相似文献
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This paper considers finite sample motivated structural change tests in the multivariate linear regression model with application to energy demand models, in which case commonly used structural change tests remain asymptotic. As in Dufour and Kiviet [1996. Exact tests for structural change in first-order dynamic models. Journal of Econometrics 70, 39–68], we account for intervening nuisance parameters through a two-stage maximized Monte Carlo test procedure. Our contributions can be classified into five categories: (i) we extend tests for which a finite-sample theory has been supplied for Gaussian distributions to the non-Gaussian context; (ii) we show that Bai et al. [1998. Testing and dating common breaks in multi-variate time series. The Review of Economic Studies 65 (3), 395–432] test severely over-rejects and propose exact variants of this test; (iii) we consider predictive break test approaches which generalize tests in Dufour [1980. Dummy variables and predictive tests for structural change. Economics Letters 6, 241–247] and Dufour and Kiviet [1996. Exact tests for structural change in first-order dynamic models. Journal of Econometrics 70, 39–68]; (iv) we propose exact (non-Bonferonni based) extensions of the multivariate outliers test from Wilks [1963. Multivariate statistical outliers. Sankhya Series A 25, 407–426] to models with covariates; (v) we apply these tests to the energy demand system analyzed by Arsenault et al. [1995. A total energy demand model of Québec: forecasting properties. Energy Economics 17 (2), 163–171]. For two out of the six industrial sectors analyzed over the 1962–2000 period, break and further goodness-of-fit and diagnostic tests allow to identify (and correct) specification problems arising from historical regulatory changes or (possibly random) industry-specific effects. The procedures we propose have potential useful applications in statistics, econometrics and finance (e.g. event studies). 相似文献
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The policy delphi method is a process that seeks to generate the strongest possible opposing views on the potential resolutions of a major policy issue, such as strategy and policy for infrastructure and engineering asset management within asset-intensive organisations. The objectives of the policy delphi method are to: ensure that all possible options have been tabled for consideration, estimate the impact and consequences of any particular option, and to examine and estimate the acceptability of all the individual options. The committee process is commonly used to address a wide range of issues and decisions within organisations at management and operational levels. Committees dominate governance and management within nearly all types of organisations, however, it has been argued that the committee approach no longer functions as effectively in the realm of policy formulation as it once may have due to a lack of adequate structure for discussion. Due to the disadvantages of the Committee process, this research investigated the relevance and effectiveness of the policy delphi method in 2013 within the leading Malaysian energy organisation, with the provision of this practical case study of a policy delphi to elaborate the efficacy of this method for asset intensive organisations to develop strategy and policy. 相似文献
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干黄管液位控制在蒸汽凝结水回收系统中因凝结水温度高而产生老化、短路,故障率高,而采用不锈铜圆电极液位传感器控制液位,性能可靠,结构简单,节能效果显著。 相似文献