转轮除湿在高炉鼓风系统中的应用及其性能实验

阐述了工业除湿技术的现状,探讨了转轮除湿技术相对其他除湿技术应用于冶金业高炉鼓风系统的可行性与优点。提出了高炉鼓风系统利用转轮除湿的节能方案,搭建了利用高炉余热再生的双级转轮高炉鼓风除湿实验机组,并在工业生产条件下进行了实地运行。结合实验数据,分析了空气参数以及试验机组自身的运行参数、结构参数对转轮除湿量的影响,提出了优化转轮除湿运行的方法。     

基于Cromer循环转轮除湿复合空调系统的性能分析

Cromer循环转轮除湿复合空调系统将转轮除湿与表冷器冷却除湿有机地结合起来,转轮除湿实现系统内部的水分转移,表冷器的冷却除湿把全部湿负荷排到外部环境。本文介绍了Cromer循环转轮除湿复合空调系统的工作原理及特点,给出了其与直接冷却除湿处理新风的比较实例。结果表明,在相同供冷水温度下,该复合空调系统能比直接冷却除湿系统实现更低的送风露点温度,提高表冷器的除湿能力;考虑低温新风可以承担室内显热冷负荷,二种新风处理方法对总的节能性没有影响,但前者送风温度接近13℃且低湿,送风品质更高。该方法可以改善室内空气品质,与直接冷却除湿方法相比不增加制冷能耗,且切实可行,值得进一步研究推广。     

膜法空气除湿的研究与进展

介绍了膜除湿的优点,压缩法、真空法、膜／干燥剂复合法等除湿模式,高分子聚合物膜、分子筛膜、液膜等的特性、除湿机理及有关的研究进展,并分析了除湿膜的应用前景。     

利用冷凝热再生的复合除湿空调除湿潜力分析

简要描述了利用冷凝热再生的复合除湿空调系统形式及其节能性特点;在热力学第一定律和热力学第二定律的基础上,分别以冷凝器和除湿转轮为控制体,建立了复合除湿空调的系统热力学模型,并给出模型求解框图,从而可以求得复合除湿空调系统的除湿量;最后,计算了在不同转轮效率和室内单位面积显热负荷下的系统单位面积除湿量,并讨论了新风量大小对结果的影响;结果表明,在现有转轮效率和常见单位面积负荷指标下,转轮的除湿量小于新风湿负荷（1次/h）,而降低新风量后（0.5次/h）,当转轮效率较高和室内显热负荷较大时,转轮能够承担新风湿负荷。     

GHP与除湿相结合的复合空调系统

介绍了一种燃气发动机热泵（GHP）与除湿转轮的复合空调系统,夏季将回收的发动机余热用于除湿转轮再生、承担湿负荷;冬季通过排热回收减小空调系统的采暖负荷。对比了复合空调系统、单独使用GHP、电动空调系统的能耗情况。     

夏季湿热地区置换通风和冷却顶板复合系统节能潜力研究

根据上海一办公楼置换通风和冷却顶板复合系统的设计及运行特点,应用EnergyPlus软件模拟了采用转轮除湿方式的复合系统的供冷季能耗,并分别模拟了采用冷却除湿方式的复合系统、带热回收装置的混合通风系统和置换通风系统的供冷季能耗以进行对比。结果表明,在湿热地区采用转轮除湿方式可比冷却除湿方式节约制冷机冷量,空调季总能源费用比混合通风系统节约30%左右。     

组合式转轮除湿系统在生产工艺中的应用

本文阐述了组合式转轮除湿系统构造、工作原理和性能特点.结合软胶囊干燥工艺和乳化炸药生产工艺,介绍了组合式转轮除湿系统各分系统的选择和部件匹配原则和方法.通过组合式转轮除湿系统在乳化炸药生产工艺流程中的实际运行参数分析,检验了组合式转轮除湿系统设计的合理性.采用数码涡旋压缩机技术可以解决因新风负荷频繁变化导致的常规压缩机启停频繁及压缩机寿命受影响的问题.     

循环再生转轮除湿系统的理论分析

本文提出一种循环再生转轮除湿系统,利用船舶设备的余热实现舱室的高效除湿,探讨了在不同参数下除湿效果的变化规律。结果表明相比于海水直接冷凝,该转轮除湿系统可有效提高除湿率。随着再生风温度的提高和再生后冷风温度的下降除湿率增加。存在最佳分流系数使得转轮除湿系统的除湿率达到最优值,该系数随着再生风温降的增大而逐渐减小。     

转轮式全热换热器干燥剂涂覆工艺试验与分析

测试和分析了可用于转轮全热换热器的硅胶、分子筛和吸水树脂干燥剂涂层材料的吸湿及放湿特性。采用优化的干燥剂涂覆工艺加工制作了硅胶转轮换热器并进行了性能测试。结果表明,相同条件下,采用优化的干燥剂涂覆工艺制作的硅胶转轮全热换热器全热回收效率比传统3A型分子筛转轮换热器提高了15%。     

热电联供系统复合除湿空调系统动态仿真

将燃气内燃机热电联供系统(CHP)与热湿独立处理空调系统(采用固体除湿转轮)组成复合空调系统.供冷期,利用燃气内燃机余热再生除湿转轮.供暖期,利用燃气内燃机余热加热新风与供暖.针对上海某超市建筑,使用动态仿真方法对常规分供系统(采用热湿联合处理,配置电制冷机、燃气锅炉)、复合空调系统的一次能源利用率、静态投资回收期、二...     

固体转轮除湿与冷凝除湿的适用性研究

针对不同工况,对固体除湿转轮进行吸湿与再生的性能实验;根据实验结果,采用空气源热泵作为冷热源,通过理论计算得出不同条件下固体转轮除湿与冷凝除湿两种方式的性能。结果表明,相同工况除湿量相同时,转轮除湿相对于冷凝除湿功耗大、效率低;随着室内空气湿度的增大,2种除湿系统能耗都减小,效率增大,冷凝除湿效率改善更明显;室外空气湿度增大,对冷凝除湿性能影响较小,转轮除湿功耗变大,效率降低;室外空气温度升高,冷凝除湿功耗增大,转轮除湿功耗减小,但两者的效率均增大。     

Modeling and simulation of desiccant wheel for air conditioning

This paper presents the modeling of a desiccant wheel used for dehumidifying the ventilation air of an air-conditioning system. The simulation of the combined heat and mass transfer processes that occur in a solid desiccant wheel is carried out with MATLAB Simulink. Using the numerical method, the performance of an adiabatic rotary dehumidifier is parametrically studied, and the optimal rotational speed is determined by examining the outlet adsorption-side humidity profiles. The solutions of the simulation at different conditions used in air dehumidifier have been investigated according to the previous published studies. The model is validated through comparison the simulated results with the published actual values of an experimental work. This method is useful to study and modelling of solid desiccant dehumidification and cooling system. The modeling solutions are used to develop simple correlations for the outlet air conditions of humidity and temperature of air through the wheel as a function of the physically measurable input variables. These correlations will be used to simulate the desiccant cooling cycle in an HVAC system in order to define the year round efficiency.     

除湿器研究进展

介绍了冷凝除湿设备、固定床除湿器、转轮除湿器、热泵和电化学除湿器、液体除湿设备、膜除湿器、HVAC除湿系统的研究进展。分析了各种除湿设备的原理、应用领域及优缺点。指出了除湿设备的发展方向。     

转轮除湿能力的测试分析

介绍了除湿转轮的性能测试原理与方法,重点讨论了湿度测量方法对测量结果不确定性的影响,同时分析了流量仪表精度对性能测试的影响。介绍了测试中的若干细节问题并给出了一个测试实例。     

Energy savings potential of a desiccant assisted hybrid air source heat pump system for residential building in hot summer and cold winter zone in China

In hot summer and cold winter zone in China, air conditioning system has four running modes yearly including cooling with dehumidification, cooling, dehumidification and heating in residential buildings. The conventional air source heat pump (ASHP) system is not designed to independently control temperature and humidity, and is not very suitable for the dehumidification mode in the view of building energy consumption. A novel ASHP system combining radiant cooling/heating for residential buildings was presented. The main feature of this hybrid ASHP system is that desiccant wheel and cooling coil accomplish dehumidification process together, and the regenerative heat needed by the desiccant wheel is supplied by the condenser dissipated heat. Based on simulation studies and performance analysis, this paper predicts the primary energy consumption of the hybrid ASHP system in comparison with the conventional ASHP system during the cooling and heating seasons. It was found that primary energy requirement can be reduced by more than 8% in cooling with dehumidification mode, by 50% in dehumidification mode, and by more than 14% in heating mode. The study results prove that the hybrid ASHP system can keep great energy saving and running cost saving yearly, especially in the dehumidification process.     

金属填料型吸收式除湿器的除湿性能研究

通过理论和实验相结合的方式,对金属填料型吸收式除湿器的除湿性能进行了研究,分析和讨论了空气和溶液的进口状态参数对出口状态参数的影响.依据双膜理论建立了该除湿器的传热传质数学模型,并进行了理论研究.实验测试与模拟计算结果表明,溶液的状态参数对除湿器传热传质的影响较大.实验过程中除湿器运行稳定,具有应用的可行性.     

Exergy performance and thermodynamic properties of the ideal liquid desiccant dehumidification system

In this paper, an ideal liquid desiccant dehumidification system is presented as the idealization of practical liquid desiccant dehumidification systems, along with an exergy analysis that considers the effects of various parameters like dehumidification temperature, water vapor pressure and temperature of surrounding environment on the system performance. Exergy formulations are developed and validated for the ideal system. These results show that the ideal system is strongly influenced by these impact factors, with respect to operating condition and exergy efficiency, and should be used with caution when comparing with condensation-based dehumidification systems.