Battery pack thermal management based on thermo electric cooling and phase change material heat preservation [PDF]
, 2017 为提高户外基站备用电池组的工作性能、延长使用寿命，需要进行冷却和保温。将半导体制冷(TEC)与相变材料(PCM)保温相结合，对基站用48 V铅酸电池组进行热管理。模拟分析TEC的布置、制冷功率和环境温度对冷却保温效果的影响。TEC设置在电池组前后两侧、制冷功率为170 W时，可降低电池的温度、提高冷却阶段电池组温度场的一致性、延长保温时间。电池组经过连续的冷却保温过程，仍处于最佳工作温度范围 ...
冯自平 +3 more
core +1 more source
Research progress in Li-ion battery pack inconsistency control [PDF]
, 2017 总结电池均衡、成组方式和热管理的研究方法及问题。电池均衡技术主要有电池均衡电路、电池均衡控制策略；电池成组方式主要有电池串并联方式、电池连接阻抗；电池热管理主要有电池生热特性 ...
冯自平, 吕杰, 宋文吉, 罗卫
core +1 more source
Study of the Dump Diffuser Optimization for Gas Turbine Combustors [PDF]
, 2015 扩压器作为连接高压压气机和燃烧室进口的关键部件，能够增压减速、降低流动损失，使燃烧稳定，提高发动机效率。 本文采用实验和数值模拟结合的方法对突扩扩压器进行了深入的研究，利用水槽PIV设备，采集扩压器内部的速度场信息与不同计算模型的计算结果对比，确定最佳的计算模型，确定出雷诺应力模型预测的扩压器流场信息与实验数据吻合的最佳；通过改变前置扩压器扩张角、突扩间隙等几何参数，研究了几何参数对扩压器性能的影响，并提出了计算总压损失和静压恢复的经验公式，利用该公式可以计算最佳扩张角、前置扩压器是否存在分离等重要信息。
徐磊磊
core +1 more source
Structure and Performance of Cu-Fe Bimodal Support for Higher Alcohol Syntheses [PDF]
, 2012 Copper-iron modified bimodal support (M) with different mass fractions of Cu and Fe elements were prepared by an ultrasonic impregnation method. The catalytic performance for higher alcohol syntheses (HAS) was investigated in a fixed-bed flow reactor ...
Ding Ming-Yue +3 more
core +1 more source
Research Progress on the Effect of Synthetic Cathinones on Animal Behavior [PDF]
, 2021 Synthetic cathinones are a class of new psychoactive substances with a structure similar to amphetamine drugs, which can produce excitatory effects similar to drugs such as amphetamine and cocaine after being taken.
HUANG Zhi-bin, CAI Juan, LIN Ze-bin, et al.
core +1 more source
Study on the Optical-thermal Response of Nasopharyngeal Tissue [PDF]
, 2004 【中文文摘】利用生物传热理论模型Pennes方程对Ar+激光辐照下生物组织的温度分布进行模拟研究;实验测定了离体猪鼻咽组织在Ar+激光(λ=488.0nm和514.5nm)辐照下不同位置的温度分布,重点研究了辐照功率密度和波长对组织中温度分布的影响。理论和实验结果表明:组织中的温度分布与组织不同深部位置、激光波长以及激光辐照功率密度有关;实验获得波长488nm和514.5nm的Ar+激光分别辐照鼻咽组织时安全光剂量分别为1.85W/cm2和1.72W/cm2。 【英文文摘】The temperature
李晖, 沈桂平, 谢树森, 陈珍黎
core +2 more sources
Efficient Measurement of Thermal Coupling Effects for Multi-chip Light-emitting Diodes [PDF]
, 2016 随着高亮度的白光LED在室内和室外领域的广泛应用，对大功率LED的要求越来越高，由此多芯片LED应运而生，同时多芯片LED也是大功率LED芯片的发展趋势之一。对于多芯片LED来讲，芯片之间的热耦合是一个重要的问题，因为芯片的温升不仅只是自身产生的热量引起的，还有一部分是由于其他芯片对其的热耦合产生的。本文主要研究的是多芯片LEDLED模块的热耦合问题，主要从理论上推导了多芯片LED模块的热耦合矩阵，并通过热仿真和实验对多芯片LED模块的热耦合矩阵的合理性进行了验证。具体做了以下几个方面的工作： 1 ...
卢红丽
core
A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source