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我国建筑能耗呈逐年增长的趋势,暖通空调的能耗在其中占据着很大的比例,暖通空调系统的节能问题在现代社会中备受关注越。暖通空调系统是能源消耗大户,所以节能降耗成为暖通空调系统设计的首要环节。由于暖通空调系统能耗问题逐渐突出,所以探究如何节能减耗时我们必须攻克的难题。本文根据实际暖通空调系统设计中存在的问题,提出控制暖通空调系统能耗产生的一些措施,探讨了暖通空调系统节能设计的一些要点。 相似文献
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从建筑概况、大楼空调设计标准、空调负荷、空调冷热源、空调冷冻水系统、空调风系统、空调自动控制方式、通风与防排烟设计方法等几个方面介绍了华府大厦通风空调工程设计。 相似文献
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介绍涤纶长丝纺丝成形过程中的空调技术及空调设备,分析近年来引进的空调装置。主要内容有:涤纶长丝车间的空调要求及设计标准;国内传统的纺丝成形空调系统;引进的局部送风式空调系统;引进的中央空调系统。 相似文献
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我国经济发展速度越来越快,人们的生活质量也上升到了一个新的层次,使得对公共建筑暖通空调系统的要求越来越高,因此对提高公共建筑暖通空调系统能效的措施进行研究是十分必要的。本文首先分析了提高暖通空调系统能效的重要性,论述了目前公共建筑暖通空调系统中存在的一些低能效问题,最后针对暖通空调系统能效的提高提出了一系列建议。 相似文献
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《中国洗涤用品工业》2021,(7)
总结医院环境集中空调通风系统的卫生要求及清洗消毒的管理,减少通过集中空调通风系统传播疾病的概率。通过查阅有关集中空调通风系统的相关文件及文献,结合医院卫生消毒标准等国家规范及临床督导实践经验,对集中空调通风系统的卫生要求及清洗消毒管理进行分析、梳理。整理出医院环境集中空调通风系统的相关卫生、清洗消毒及维护要求。发现医院环境下的集中空调通风系统按照相关卫生要求进行维护和清洗消毒,可以降低经集中空调通风系统传播呼吸道疾病的发生率。 相似文献
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伴随着整体社会的暖通空调技术的快速发展,暖通内部的水力平衡系统以及逐步被大家所认识,采用合理的水力系统调整过程,可以保证水力系统的合理分配过程,防止水力失调造成整个系统出现分配不均的问题,造成空调的整体内部矽统混论,无法达到应有的系统温度平衡,造成空调系统内部的能量出现失衡,造成水力平衡系统无法正常运转,造成强烈的温度能量的浪费。本文将针对暖通的相关空调调水能力进行水力平衡分析,从而保证水力平衡效果的同时实现暖通空调的水力系统正常运转。 相似文献
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随着人们生活水平的提高,舒适性空调系统得以广泛应用。空调系统在营造舒适环境的同时,也在消耗大量的能源。如今国家提倡的持续发展战略深入人心,节约能耗在暖通空调设计中被人们重视。本文在分析暖通空调节能设计相关问题发的基础上,阐述了暖通空调系统节能设计的具体方案,并且提出了了节能设计的要点。 相似文献
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分析了涤纶长丝空调的工作过程及送风参数的控制,指出涤纶长丝空调运行中存在的表冷器易堵且难于清洗、系统风压、夏季工艺空调送风温度及湿度难于控制、空调出现故障时缺少应急措施等问题,提出了相应的改进措施。通过对工艺空调和环境空调进行改造,喷淋水质改用除盐水后,长丝空调运行状况得到改善。对现行涤纶长丝空调的节能和喷淋水系统改进提出了建议。 相似文献
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一、概述空调循环冷却水系统包括开式循环冷却水和闭式循环冷冻水二个系统。所谓空调系统水处理,是对这两系统循环冷却水进行水质稳定的控制。空调循环水系统与工业循环冷却水系统有许多相似之处,都存在腐蚀、结垢、微生物和藻类生长的危害。空调冷却水系统容积小,单位时间内水的循环次数之 相似文献
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A SIMULATION OF A MOTIONLESS MIXER 总被引:2,自引:0,他引:2
Continuous laminar mixing in segmented twisted-tape motionless mixers is considered. A solution to the steady isothermal creeping flow of a Newtonian fluid in a twisted-tape mixer has been obtained via two-dimensional numerical procedures. The developed flow within a section of the mixer has been solved in a helical coordinate system by an iterative scheme. The resulting solution is rigorously correct in the absence of entrance and exit flows at the junction between sections. An algorithm is presented for the modelling of these junction flows via two-dimensional procedures. Simulated cross-sectional mixing patterns have been generated for comparison with experimental results
The performance of twisted-tape mixers is simulated for various designs, beginning with the particular geometry of the Kcnics Static Mixer, and for different operating conditions Results suggest that the rate of mixing as a function of the total twist per section is optimized with respect to pressure drop when sections contain 80 degrees of twist. The capability for rational improvement in other design and operating parameters is illustrated. The mechanisms of laminar mixing are discussed and quantified; of primary importance is the tendency for interfacial area to assume an orientation within each section which is favorable to mixing in subsequent sections. 相似文献
The performance of twisted-tape mixers is simulated for various designs, beginning with the particular geometry of the Kcnics Static Mixer, and for different operating conditions Results suggest that the rate of mixing as a function of the total twist per section is optimized with respect to pressure drop when sections contain 80 degrees of twist. The capability for rational improvement in other design and operating parameters is illustrated. The mechanisms of laminar mixing are discussed and quantified; of primary importance is the tendency for interfacial area to assume an orientation within each section which is favorable to mixing in subsequent sections. 相似文献
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The activated sludge process is widely used to treat domestic and industrial wastewater. A significant drawback of this process is the production of “sludge”, the disposal of which can comprise a significant proportion of the total operating costs of a wastewater treatment plant. We analyze the steady-state operation of a membrane bioreactor system (MBR) incorporating a sludge disintegration unit (SDU) to reduce sludge production. We provide a qualitative understanding of the model by finding analytically the steady-state solutions of the model and determining its stability as a function of the residence time. In practice a target value of the mixed liquor suspended solids (MLSS) content within the membrane reactor is specified. Applying the mathematical technique of singularity theory we show that if the sludge disintegration factor is sufficiently high then the MLSS content is guaranteed to be below the target value. This model prediction, of key interest from a practical perspective, was not identified in the original investigation of this model, which relied upon numerical integration of the governing equations. 相似文献
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在浮法玻璃生产过程中,氮气流量保持恒定,是保持锡槽工况稳定的重要条件,是生产优质浮法玻璃的重要前提条件之一.只有制氮设备的稳定运行,才能保证氮气供应.本文就制氮空压机运行中出现的故障现象、原因进行了分析,并提出了改进措施. 相似文献
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Mauri Soininen 《Drying Technology》1985,3(2):153-170
Drying of thin paper sheet on a Yankee cylinder equipped with a steam heated high velocity hood is examined. When possible infiltration of air from the surroundings is considered, then the process is fully determined by twelve variables. One of these can be chosen as an independent variable. An equation group of eleven equations is derived. The method of solution is iterative. Finally, a numerical demonstration example is presented. 相似文献
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