一种新型高效敞开式空调系统

报道了一种应用于敞开吸收式空调系统的新型空气循环方式，它可以显著地改善系统进行特性，提高效率，减小设备尺寸，降低造价，同时还可提高系统致冷贮存能力。     

Intermetallics as advanced cathode materials in hydrogen production via electrolysis

Intermetallics phases along Mo–Pt phase diagram have been investigated as cathode materials for the production of hydrogen by electrolysis from water KOH solutions, in an attempt to increase the electrolytic process efficiency. These materials were compared with conventional cathodes (Fe and Ni), often used in the alkaline electrolysis, and also with the intermetallic Ti–Pt. An significant upgrade of the electrolytic efficiency using intermetallics in pure KOH electrolyte was achieved in comparison with conventional cathode materials.     

An investigation of the electrolytic solution effects on stainless steel electrode for dye-sensitized solar cells

In the field of dye-sensitized solar cells (DSSCs) the tendency is nowadays to replace the classical conducting glass by a metallic substrate (i.e. stainless steel 304L) as the counter-electrode. However the electrolytic solution (iodide/triiodide in an organic solvent) may be aggressive for stainless steel. An electrolytic solution optimization should improve the long-term stability and increase the cell performance. For this purpose, the electrolytic solution was submitted to different treatments (i.e. deoxygenation, dehydration and dehydration–deoxygenation) in order to increase the corrosion resistance of stainless steel (304L) electrode by eliminating the dissolved oxygen and water.     

旋转填料床用于气体除湿的研究

考虑到传统的冷却除湿法存在诸多不足,提出了采用旋转填料床对气体进行除湿的新方法并进行实验研究。以冷水为冷却介质对高温高湿气体进行除湿处理实验。实验结果表明,在超重力因子100,进气量12m3/h,气液体积比650,相对湿度100%的条件下,除湿效率达到56.7%以上,有明显的处理效果。该实验为旋转填料床除湿工业化的实现提供了基础理论与数据支持。     

湿空气进口温度对固体吸附床吸附除湿性能的影响

本文实验以所设计的固体吸附床为研究对象,在吸附床进口空气含湿量恒定的条件下,研究了4A分子筛固体吸附床除湿能力随空气进口温度的变化.结果表明:湿空气进口温度为14.4℃时的固体吸附床的吸附性能优于进口温度为39℃时的吸附性能,且前者的吸附除湿量较后者平均约高出30%.     

固定床固体吸附除湿能效评价指标的分析与优化

本文从固体吸附除湿的角度出发,对目前已有的除湿能效评价指标进行了分析,指出了所存在的问题,并在此基础上提出了2种新的评价指标:吸附能效和脱附能效。这2个评价指标综合考虑了吸附剂的吸附自由能和脱附活化能对材料特性的影响,突出了吸附材料对吸附除湿的影响,可为今后吸附剂的选型与优化、吸附除湿能耗的降低提供判别依据。     

通用变频器的维护方法

变频器的工作状况如何直接影响设备的运转，为确保变频器的正常工作，本文就变频器维护保养的方法向大家介绍。     

Microporosity of heat-treated manganese dioxide

A structural and micro-pore analysis of a series of heat treated electrolytic manganese dioxide (EMD) samples has been conducted. In terms of crystal structure, the original EMD with γ-MnO₂ structure (orthorhombic unit cell) was found to progressively convert to β-MnO₂ (tetragonal unit cell) at elevated temperatures. The structural transition was kinetically limited, with the higher temperatures leading to a greater degree of transformation. The orthorhombic γ-MnO₂ unit cell was found to contract along the a and b axes, while along the c axis an expansion was observed only at the highest heat treatment temperatures. These changes occur as a result of manganese ion diffusion leading to the formation of a denser, more defect free material. The porosity of these heat treated EMD samples was also examined by N₂ gas adsorption combined with various interpretive techniques such as the Kelvin equation, MP method, Dubinin–Radushkevich method, Dubinin–Astakhov method and a more modern density functional theory based approach. Despite shortcomings associated with certain techniques, all clearly indicated that the EMD micro-pore volume decreased and the meso- and macro-pore volume increased as the heat treatment temperature was increased. This was justified as a result of manganese ion movement during the structural rearrangement causing the small pores to be progressively sintered shut, while the larger pores were formed as a result of stress-induced cracking in the denser final product.     

Specific contact resistivity of indium contacts to n-type CdTe

Indium alloyed to n-type CdTe of about 10¹⁶ cm^-3 electron concentration provides a contact resistivity of about 7 x 10^-3 ohm cm². This is achieved by alloying for 10 minutes at 150-450‡C in a sealed ampoule with an overpressure of cadmium. If the alloying is done in an open tube H₂ flow without a Cd vapor overpressure, alloying temperatures above 250‡C cause the contact resistance to rise as cadmium vacancies increase the compensation in the CdTe. Further improvement of the contact resistivity to 1 x 10^-3 ohm cm is obtained by a 900‡C diffusion of In into the n-CdTe (electron concentration 10¹⁶ cm^-3 before the diffusion).     

电铅熔炉的节能模拟试验研究

根据相似理论，对50t电铅熔炉进行了冷态模拟试验，其结果表明：炉内气流分布不均匀、炉子内部结构不尽合理、工艺及热工操作制度尚欠完善。为此，提出了相应的改进措施。