共查询到20条相似文献,搜索用时 78 毫秒
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以输配能耗最小为目标,室内舒适和建筑节能相关要求为约束条件,利用MATLAB的优化工具箱,对地表水水源热泵输配系统的优化模型进行研究,确定影响地表水水源热泵输配系统能耗的主要因素。应用此方法对水源热泵实验系统进行了应用分析,得到了系统随负荷率变化的冷却水和冷冻水变流量优化运行方案。对于大部分时间处于部分负荷运行的系统,优化运行比定流量运行可减少能耗10%以上。该优化模型能方便地应用于实际工程,为输配系统的设计和运行提供最佳参数,实现随负荷变化的流量调控,从而有效降低水源水输配能耗,提高系统能效。 相似文献
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运用DEST软件分析了山西省太原市某洗浴中心采用洗浴废水源热泵系统供暖的逐时负荷的情况,得出,采用洗浴废水源热泵供暖比常规地下水源热泵系统供暖具有明显的节能优势。 相似文献
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Edward F. Renshaw 《Energy Economics》1981,3(1):36-42
Energy consumption is included in an aggregate Cobb-Douglas production function for the USA. The data suggest that energy conservation has not reduced the growth rate for real GNP by more than 0.3 percentage points and that less than one-fifth of the overall slump in labour productivity since 1973 should be attributed to higher energy prices. 相似文献
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节能量的准确计算在节能审核中越来越重要。文中详细阐述节能量的计算、边界确定和在实际中的应用,增加审核的可靠性、真实性,同时介绍在燃煤锅炉(窑炉)、余热余压利用项目、电机系统节能、及能量优化系统优化项目的计算方法。 相似文献
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This paper studies the macroeconomic consequences of oil price shocks caused by innovations in the monopoly power in the oil market. Monopoly power is interpreted as oil producers' ability to charge a markup over marginal costs. We propose a novel way to identify markup shocks based on meetings of the OPEC and show their unique macroeconomic consequences compared to supply and demand shocks. In particular, global real economic activity expands when oil producers' monopoly power rises. A general equilibrium model suggests that higher monopoly profits attract investments in oil producing capital which drive down marginal costs and stimulate economic growth. 相似文献
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何华 《柴油机设计与制造》2000,(4):46-48
本文论述了软件领域的一场新的革命-基于组件的软件开发技术。组件技术的核心是COM(组件对象模型),COM技术已经成为ActiveX、OLE2、DCOM等组件技术的基石。本文还论述了组件开发技术在柴油机测试领域的应用,并对应用前景进行了展望。 相似文献
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自然通风条件下建筑围护结构及室内空气的温度计算 总被引:1,自引:0,他引:1
建立太阳照射和自然通风条件下建筑与室内、外环境的空气平衡方程与热平衡方程,以及沿围护结构厚度的非稳态一维导热方程,求解得到建筑围护结构和室内空气的温度。选取广州夏季某一天的气象参数,计算围护材料分别采用钢筋混凝土、灰砂砖砌体、浮石混凝土、橡木和平板玻璃情况下,从7时至19时一单室建筑围护结构及室内空气的温度。 相似文献
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活塞动力学仿真及在拉缸分析中的应用 总被引:1,自引:0,他引:1
针对某型发动机开发实验过程中出现的拉缸现象,建立活塞一连杆组动力学模型,并进行数值仿真分析。通过一个工作循环的模拟,获得了活塞与缸套之间的接触应力及间隙、活塞在缸套中的瞬时运动特性,并与实验结果对比,找出拉缸产生的原因,为优化活塞外轮廓形线提供了理论依据。 相似文献
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从企业用电系统的科学管理和技术改造两方面分析了企业节约用电的工作,介绍了企业节约用电工作实施方法,对相关的效益进行分析。 相似文献
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原油热化学脱水工艺,是将含水原油加热到一定温度,并在原油乳状液中加入少量的表面活性剂(破乳剂),破坏其乳化状态,使油水高效分离.因其工艺简单、流程简化,工程投资少,近年来在国内外各油田得到广泛应用.为探讨热化学脱水工艺在肇州油田的适应性,以肇一联脱水站热化学三相分离器应用实例为参照,从脱水率、分离效果以及运行能耗等方面,对热化学脱水工艺的适用性进行研究,以期取得原油脱水满足净化油标准,保证伴生气和含油污水的有效分离,实现原油脱水工艺的简化,从而降低生产运行成本,节能减排的目的.试验结果显示,热化学脱水工艺技术的关键在于加入的破乳剂,应定期进行破乳剂与来液介质配伍性实验,优选高效、经济的药剂.热化学三相分离器的温度控制在60℃,加药浓度控制在45μL/L时,满足肇一联脱水站的生产需求. 相似文献
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《Energy Policy》2005,33(17):2272-2290
This paper contests the view held by the current UK government and its industry regulator, OFGEM, that liberalisation is good for security of supply. Focusing on the downstream aspects of the security of UK gas supply, on system security, it considers the impact of the different aspects of liberalisation: of legal governance, supply competition, de-integration, market simulation, regulation and the interaction of liberalised gas and electricity markets. Categorising these impacts in terms of security threats and threats to security response, it finds that individually and as a complex collectivity they have increased the risks of supply failure, either potential or already realised, in a variety of ways: from creating increased uncertainty and failing to signal adequate or appropriate investment, to legal ambiguity which divorces responsibility from liability and renders legal liability indeterminate ex ante. Moreover, one of the UK government’s responses to these increased dangers, which it does appear to perceive, is revealed as itself paralysed by the liberalisation paradigm: the government can only intervene pre-emptively with information in attempt to persuade the market to behave as it thinks it should. Meanwhile, however, the government has also had to recognise its default responsibility for security of supply and make preparations to intervene in an emergency situation: liberalisation can only be challenged when it is already too late. 相似文献