纤维板湿板坯的脱水排汽规律探讨

本文探讨了湿法硬质纤维板在热压过程中的脱水排汽规律。     

氯甲酸乙酯尾气综合利用的研究

氯甲酸乙酯生产过程中,光气过量约5％～20％,使用氯甲酸乙酯和乙醇混合物吸收尾气,通过调节反应温度、氯甲酸乙酯与乙醇配比、反应时间,吸收尾气制得的氯甲酸乙酯含量在98％以上.     

关于厨房排烟排汽问题的探讨

本文论述的关于厨房排烟、排汽问题是个常见的问题。但作者借鉴国外的作法在常规的问题上提出了自己的解决方法,按我国的现有的条件、设备结合实际情况,进行了较为细致的分析。     

黑龙江城镇化进程中经济增长对废气排放的影响研究

以黑龙江省2001 ～ 2010年经济发展和环境保护相关数据为基础,采用环境库兹涅茨拟合曲线对黑龙江省经济增长与废气排放关系进行实证分析,结果表明2001 ～ 2010年黑龙江省废气排放量呈现先上升后下降的趋势,年均增长率显著低于经济的增长速度,废气排放并未与经济同步增加,今后一段时期随着经济的发展,废气排放量呈现下降趋势,说明黑龙江省环境治理取得一定的效果,但尚未形成突出优势,在二氧化硫和烟尘的排放方面仍需进一步加强.     

Experiments of the EFI engine fueled with blends of high proportion aquiferous ethanol and gasoline

Engine power performance of fuel economy and emission characteristics with a JL368Q engine run on ethanol/ gasoline blends was experimentally investigated. The results show that with the same structure and parameter of the engine, at the low speed, the power output or torque of blended fuels are almost similar to that of 93 # gasoline. But with the speed increasing, the E15W and E50W power outputs are lower than that of 93# gasoline while E30W remains the same. The brake specific fuel consumption of E15W is lower than that of gasoline about 0.35%. With the increase of ethanol volume fraction in the blended fuel, the specific fuel consumption increases gradually. When fueled with ethanol/ gasoline blends, the engine NOx emission increases and CO emission decreases. E30W gives the lowest CO emission in this test. With the increase of ethanol volume fraction, HC can be improved gradually.     

Assessment and Suggestion on Management System of Vehicle Exhaust

This paper analyzes the deep reasons why the benefits are always poor though China has controlled the vehicle exhaust for more than ten years, as well as a successful experience of the developed countries. Contrasting the deficiencies of the previous Air Pollution Control Law and advantages of the present Air Pollution Control Law , the paper indicates the organization structure and management system of the EPA are not entirely eligible for the tasks though the new law entitles environmental administrations to strengthening the exhaust control. It calls for that, according to principle that a structure results in a function, China must establish the management system of vehicle emission control in metropolises as soon as possible. So we can implement this law and improve urban air quality that has deteriorated due to vehicle exhaust. This paper puts forward organization form, functions, tasks and effect of this system.     

排气扇通风降温对比试验报告

用排气扇与各种通风方式对高大平房仓进行降温对比试验，将试验仓与对比仓的降温情况、通风效率、表观风速和水分变化进行比较。结果表明，用排气扇通风具有耗电低、降温均匀、不分损耗低和操作简便等优势，适用于冷空气资源充足的地区。     

实验室493柴油机排气系统布置方案的研究

以内燃机热力过程模拟理论为基础,利用BOOST软件详细讨论了排气管长度和管径对493柴油机性能的影响.同时,应用此研究结论针对内燃机实验室的实际情况提出了493柴油机的排气管布置方案,并运用BOOST软件对使用附加排气管前后内燃机性能的差异进行了比较,为今后内燃机实验室的布置提供了理论依据.     

基于直接流固耦合的发动机排气歧管热应力分析

应用计算流体力学软件STAR-CCM+计算了发动机排气歧管的瞬态内流场,得到排气歧管内壁面的热边界条件,根据经验值给定排气歧管外壁面的热边界条件,进一步计算排气歧管的温度场及热应力.计算结果表明,发动机排气歧管在支管交汇处温度最高,达到969K,其熟应力在140MPa以下.     

摩托车尾气对小鼠呼吸系统组织结构的影响

60只昆明种雄性小鼠随机分为3组,A组(对照组)、B组(用普通摩托车尾气染毒)和C组(用微型摩托车尾气染毒),染毒4周后处死,取出气管、肺脏制作组织切片观察其组织结构.结果表明,试验组小鼠的气管组织结构变得疏松,软骨组织和黏膜下层出现萎缩现象,尤其是C组的气管上皮出现化生,即由假复层纤毛柱状上皮变成鳞状上皮;试验组小鼠肺的各级支气管出现黏膜上皮细胞萎缩、纤毛脱落等现象,肺泡管、肺泡囊及肺泡也发生了一定程度的破坏,尤其是C组肺内小动脉出现管壁增厚、管腔狭窄等现象.