再生水回用循环冷却系统药剂HJ-01阻垢机理

针对再生水回用于循环冷却系统中引起的结垢问题,进行了碳酸钙沉积实验和旋转挂片腐蚀实验,对所得的结垢产物的微观形态、元素组成以及化合物构成,分别采用扫描电子显微镜、X射线能谱仪和X射线衍射仪进行分析,探究复配药剂HJ-01在阻垢过程中的机理,并深入分析该药剂结构中官能团的阻垢特性。实验结果表明,药剂HJ-01可以通过在挂片表面形成具有保护作用的薄膜而阻垢,其阻垢机理包括晶格畸变、螯合增溶和分散作用;其中膦酸基(—PO3H2)和羟基(—OH)官能团引起晶格畸变作用;羧基(—COOH)官能团引起螯合增溶作用;而阻垢剂中的链状结构导致分散作用的产生。     

影响旁路净化含油循环水达标时间的主要因素

基于循环冷却水旁路净化含油水的模拟装置,研究了旁路流速、各次料水比、旁路吸附塔填料换料时间间隔、吸附塔填料填装形式、系统温度对系统含油水浓度达标时间的影响.结果表明:净化达标时间随旁路流速的增加呈先减少后增加趋势,旁路流速为1.68 ×10-3 m/s时,净化达标时间最短;选择适当的各次料水比1/2 400,保证较短的净化达标时间和较低的经济成本;换料时间间隔为△tn+1=1.2nh时,较其他方式更有效合理;吸油填料的填装形式为混合式,系统运行温度为35℃时,净化达标时间最短.     

城市二级处理后污水直接回用作工业循环冷却水的阻垢研究

采用碳酸盐沉积法及动态模拟试验研究了将城市污水处理厂二级出水直接回用作工业循环冷却水时,污水中的悬浮物、COD、浓缩倍数等因素对系统的结垢和药剂阻垢效率的影响。     

纳滤膜处理炼油厂循环冷却水排水

采用高效混凝沉降—超滤工艺对循环冷却水排水进行预处理后,考察了NF-A、NF-B和NF-C型纳滤膜的运行情况和处理效果.实验结果表明:NF-A膜对COD、Ca2+和Mg2+的去除率均较低,对Clˉ没有去除效果;NF-C膜对COD、Ca2+、Mg2+和SO42-的去除率均较高,对Clˉ去除率为83.1％,但运行压力较高;NF-B膜运行压力居中,对COD去除率为95.9％,对Ca2+去除率为98.3％,对Mg2+去除率为93.4％,对SO42-去除率为98.2％,对Clˉ去除率为67.4％,处理后出水达到循环回用的要求.     

On-chip waste heat-driven absorption cooling system for sustainable data center environment: simulation

Development of waste heat-driven absorption-based cooling system is inspired for the need of removing high heat flux from the sustainable data centre environment. This paper presents a simulation study of single-stage Lithium Bromide–Water (LiBr–H₂O) vapour absorption heat pump for chip cooling. In the present work, a complete thermodynamic analysis of the single-stage LiBr–H₂O vapour absorption-based heat pump for chip cooling without a solution heat exchanger is performed and a user friendly graphical user interface (GUI) package including visual components is developed by using MATlab (2008b). The effect of chip heat flux on COP (Coefficient of Performance), flow rates and conductance is examined using the developed package. The model is verified using the data available in the literature which indicates that there is a greater reduction in the absorber load. The influence of chip heat flux on the performance and thermal loads of individual components are studied, and it is concluded that COP decreases from 0.7121 to 0.68924 with increase in chip heat flux.     

新型高效分散阻垢剂XH-929的性能及应用

分散阻垢剂ＸＨ－９２９对循环冷却水中ＣａＣＯ３、Ｆｅ２Ｏ３、ＭｇＳｉＯ３、Ｃａ３（ＰＯ４）２的沉积结垢有很好的抑制作用,且能在碱性条件下稳定Ｚｎ２＋。动态模拟试验和工业应用实例表明,ＸＨ－９２９分散阻垢剂与适量缓蚀剂复配后,可起到较好的阻垢、缓蚀作用。     

CAERvest® – a novel endothermic hypothermic device for core temperature cooling: safety and efficacy testing

Introduction. Cooling of the body is used to treat hyperthermic individuals with heatstroke or to depress core temperature below normal for neuroprotection. A novel, chemically activated, unpowered cooling device, CAERvest®, was investigated for safety and efficacy. Methods. Eight healthy male participants (body mass 79.9?±?1.9?kg and body fat percentage 16.1?±?3.8%) visited the laboratory (20 °C, 40% relative humidity) on four occasions. Following 30-min rest, physiological and perceptual measures were recorded. Participants were then fitted with the CAERvest® proof of concept (PoC) or prototype 1 (P1), 2 (P2) or 3 (P3) for 60 min. Temperature, cardiovascular and perceptual measures were recorded every 5 min. After cooling, the CAERvest® was removed and the torso checked for cold-related injuries. Results. Temperature measures significantly (p?Conclusion. This study demonstrates that the CAERvest® is an effective device for reducing body temperature in healthy normothermic individuals without presence of cold injury. Further research in healthy and clinical populations is warranted.     

温度冲击试验设备实现途径及热负荷分析

结合试验指标要求,对温度冲击试验设备实现途径进行分析比较,选择两箱式作为试验设备的实现方式;对设备组成结构及制冷、加热流程进行阐述,并对温度冲击试验过程中两种制冷状态下的热负荷进行了分析计算。     

高温烟气冷却方法与设计计算

介绍了工业高温烟气冷却目的和意义及常见的冷却降温方式,提出了相关的理论和设计计算方法,结合工程中高温烟气冷却的典型案例,介绍了高温烟气冷却设计计算的应用.     

电厂冷却水对梭幼鱼热效应的研究

通过对梭幼鱼各项温度基准值的测定,研究了电厂冷却水对梭幼鱼的热效应。结果表明,自然水温２５℃条件下,梭幼鱼的回避温度、ＴＬ５０、ＵＩＬＴ、ＭＷＡＴ、ＣＴＭ、短期暴露最高温度分别为３４℃、３６．７℃、３８．７５℃、３０．５２℃、４０．８２℃、３５．３２℃;建立了梭幼鱼对温度效应的敏感区域图和温度－时间方程ｌｏｇｔ（ｍｉｎ）＝１７．９４２２＋０．４２０２５Ｔ（℃）及安全受热方程Ｔ（℃）＝ｌｏｇ１４４０