Results 1 to 10 of about 2,695 (84)

基于CNN-Bi-LSTM功率预测的海岛综合能源系统优化调度 [PDF]

open access: yes全球能源互联网, 2023
合理构建海岛综合能源系统对沿海能源清洁化转型意义重大,其优化调度更是实现海岛能源供需平衡的有效途径。为此,提出了一种考虑风光功率预测的海岛综合能源系统优化调度方法。首先,搭建包含氢能设备、海水源热泵、海水淡化装置、波浪能发电装置等新型能源转换设备的系统模型。其次,海上气候多变会导致新能源发电不稳定,故采用含环境变量重要性排序的一维卷积神经网络和双向长短时记忆神经网络(convolutional neural network-bi-directional long short-term memory ...
王润治   +4 more
doaj   +1 more source

某供热机组水汽氢电导率异常波动及超标原因分析

open access: yesGongye shui chuli, 2021
联合使用在线化学仪表检验装置、痕量TOCi分析仪和离子色谱仪,从仪表测量准确性、有机物污染和无机离子污染等方面分析了某供热机组发生凝结水、给水氢电导率异常波动及超标的原因。根据计算得到的凝结水脱气氢电导率,判定凝结水是否因携带CO2造成氢电导率偏高。分析认为,导致机组氢电导率异常波动及超标的主要原因是凝结水受到余热凝汽器疏水和定排扩容器炉水的污染,从而携带大量无机离子。另外,凝结水脱气氢电导率的计算值略低于氢电导率的测量值,表明凝结水携带少量CO2。
张龙明   +7 more
doaj   +2 more sources

Antibacterial Activity and Mechanism of Linalool Against Pseudomonas fragi(芳樟醇对莓实假单胞菌的抑菌活性及机制) [PDF]

open access: yesShipin kexue jishu xuebao, 2022
Foods are vulnerable to contamination by pathogenic bacteria during production, transportation and storage, and this can cause foodborne illness. Linalool has antibacterial effects, but the mechanism of action remains unclear.
LI Yuansong(李远颂)   +4 more
doaj   +1 more source

尿素漏入对机组水汽品质的影响及关键诊断技术

open access: yesGongye shui chuli, 2022
城市中水中的有机物在经锅炉补给水系统迁移到热力系统的过程中发生了分解,引发了机组水汽品质的劣化。采用现场测试与室内分析相结合的技术手段发现中水、超滤、反渗透和除盐水箱中均检测出了尿素,确认了尿素为中水的有机物污染源。总结了尿素在水汽系统中的分解规律为随水汽温度、压力升高最终分解成氨气和二氧化碳,从而表现出给水、蒸汽氢电导率的异常升高。开展了系列尿素浓度的给水模拟溶液高温分解实验,结合理论计算分析,评估了尿素对水汽品质的影响。提出了准确判断尿素是否漏入热力系统的关键技术 ...
熊远南
doaj   +2 more sources

供热工况下超临界机组水汽氢电导率异常研究分析

open access: yesGongye shui chuli, 2020
供热工况下,某电厂630 MW超临界机组给水和主蒸汽氢电导率较高,无法满足给水加氧处理时的要求。对热力系统的水汽品质进行分析,试验结果表明:除盐水中TOC含量超标,导致供热时水汽系统的TOC升高,有机物分解产生CH3COO-和HCOO-,引起主蒸汽氢电导率超标;除盐水含有大量二氧化碳,供热时机组的补给水量增加,导致给水中二氧化碳含量较高,引起给水氢电导率超标。
李海洋   +3 more
doaj   +2 more sources

电厂水汽系统有机物含量对氢电导率影响试验研究

open access: yesGongye shui chuli, 2016
为探索电厂水汽系统中有机物含量对氢电导率的贡献值,在测定机组水汽有机物含量的同时,进行了水样离子色谱分析。根据离子色谱数据可以理论计算出水汽中无机离子变化对氢电导率的贡献,从而间接计算出有机物分解对氢电导率的贡献。分析表明:上述方法计算出的结果与实际值相符,水汽中的有机物对氢电导率存在较大影响。
金绪良   +5 more
doaj   +2 more sources

气液相等离子体对水中四环素去除及机制研究

open access: yesGongye shui chuli, 2022
本研究采用气液相等离子体处理四环素废水。利用示波器分析放电过程中电流和电压的变化;采用发光光谱测定等离子体在不同放电气体组分下产生的活性物质,其中氩气放电产生的羟基自由基和活性氢的强度明显比其他气体组分强;考察了放电功率、溶液pH、放电气体组分、溶液电导率对四环素去除效果的影响;利用分光光度计测定了长寿命活性物质变化情况,在放电过程中产生的长寿命活性物质包括臭氧、过氧化氢等物质对四环素的降解起到重要作用,且这些物质的浓度随着放电时间的延长逐渐增大。在放电功率为19.7 W,四环素的质量浓度为20 mg ...
刘行浩   +3 more
doaj   +2 more sources

炉水氢电导率偏高的原因分析及解决措施

open access: yesGongye shui chuli, 2017
某330 MW机组炉水氢电导率偏高,导致锅炉排污量大,造成水汽损失和热量损失,影响了机组运行的经济性。通过对机组的水汽品质和水处理药品进行检测分析,发现水汽系统加药用的氨水质量不合格,其中氯离子和硫酸根离子明显超标。此质量不合格氨水进入系统导致炉水氢电导率偏高,更换质量合格的氨水后炉水水质恢复正常。
张洪博   +5 more
doaj   +2 more sources

氢自养还原菌同步降解水中4-溴酚及硝酸盐

open access: yesGongye shui chuli, 2023
基于摇瓶研究了以H2为电子供体的氢自养还原菌降解4-溴酚(4-BP)的可行性;并在此基础上研究了4-BP浓度、硝酸盐(NO3--N)浓度及氢分压对4-BP的去除影响;最后研究了4-BP加入前后的微生物菌群变化。结果表明,提高初始4-BP浓度会降低其去除效果;作为一种优先电子受体,NO3--N会与4-BP争夺电子供体H2,增大初始NO3--N浓度导致4-BP去除效果下降;提高氢分压会使得单位浓度NO3--N及4-BP获得更多的电子供体,提升两者还原速率;加入4-BP后,改变了微生物的生长环境 ...
陈博   +5 more
doaj   +2 more sources

超滤对磁化水的影响及截留微粒成分分析

open access: yesGongye shui chuli, 2003
研究了超滤对磁化的碳酸氢钙水溶液的电导率及产生沉淀的温度的影响,利用扫描电镜分析了超滤膜截留的微粒成分。实验结果表明:饱和的碳酸氢钙水溶液经磁化-超滤处理后,电导率开始就有差异,透过液的电导率最低。在加热出现肉眼可见沉淀的温度由高到低的顺序为:透过液>浓缩液>原水;超滤膜截留的微粒成分复杂,主要由硅、铝、钙、硫、铁等元素组成,不是单一的碳酸钙晶体。
黄征青   +3 more
doaj   +2 more sources

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