固体吸附式制冷强化传热研究进展

吸附床的传热强化是影响固体吸附式制冷的主要因素。简述了吸附制冷的强化传热研究进展,介绍了几种常用的吸附床强化传热方法,提出了固体吸附式制冷强化传热的研究方向。     

太阳能固体吸附式制冷循环的吸附床内传热传质耦合计算

用多孔介质理论方法分析了太阳能固体吸式制冷循环的吸附床并相应地按多孔介质的质量、动量、能量传递过程建立了太阳能固体吸附式制冷循环吸附床内传热传质耦合求解的数学模型。用本文建立的方法,可对吸附式制冷循环的吸附床进行了热动力学分析与计算,并可进一步用于系统的优化设计中。     

太阳能吸附式制冷技术进展综述

介绍了太阳能吸附式制冷技术的原理与特点，从吸附剂一制冷剂工质对、系统循环方式以及吸附床三个方面详细说明了吸附式制冷技术的进展。通过综合分析指出，优化系统的设计，尤其是对系统关键部件，如吸附床、冷凝器、蒸发器的优化设计，对太阳能吸附式制冷系统的性能非常重要；其次，应加强对性能稳定、操作简便的无阀系统的研究，同时加大对太阳能吸附式制冷与建筑一体化的研究力度，使之符合建筑一体化的要求。最后分析了太阳能吸附式制冷技术的发展前景。     

新型化学吸附式制冷工质对CoF2-NH3的吸附特性

对新型化学吸附式制冷工质对CoF2-NH3的吸附特性进行了实验研究，得出了吸附等温线，研究结果表明，CoF2-NH3工质对的单位吸附量大，达到最大吸附量时的温度要求降低，吸附周期缩短，并且多次重复吸附后既不结块，也不膨胀，为化学吸附式制冷的小型化和实用化提供了新的可能性。     

固体吸附制冷循环节流特性的试验研究

从制冷循环的角度分析了吸附式制冷的特点，对间歇运行的吸附式空调的节流特性进行了试验研究。研究表明，间歇式吸附制冷的节流特性随循环相位变化而变化，采用膨胀阀的性能优于采用固定长度的毛细管。     

一种有潜力的吸附式制冷工作对——活性炭纤维—甲醇

吸附式制冷具有无ＣＦＣｓ问题、可利用低品位热能驱动、价格效用比高等一系列优点。由于一般吸附剂吸附／解吸时间长和单位质量制冷功率小使吸附式制冷的产品化受阻。活性炭纤维是一般吸附剂活性炭的较好替代物，其对甲醇的吸附容量为活性炭的２－３倍，而吸附／解吸时间仅为活性炭的１／１０左右。对紧凑式吸附式冰箱，活性炭纤维－甲醇是一种好的工作对。     

太阳能吸附式制冷系统的研究现状与发展前景

从工作原理、工质对的选择、吸附床的设计、经济性分析及应用几方面,对太阳能吸附式制冷系统进行了详细的综述性分析。由于太阳能转换率低和集热器价格昂贵,目前太阳能吸附式制冷系统存在的主要问题是制冷性能较低、初投资成本大,所以,提高制冷性能、降低成本是太阳能吸附式制冷系统实现商业化和产业化的关键所在。通过选取合适的工质对、强化吸附床的传热传质性能,可有效提高系统的制冷系数,推进其工业化应用。     

聚光连续型高效智能吸附式空调及其强化传热设计浅析

基于双床吸附连续制冷的理论,提出了一种聚光连续型高效智能吸附式空调系统,将聚光光伏技术和吸附式制冷技术相结合,形成冷、热、电联产一体化的新思路。系统设计围绕连续回热型的吸附制冷循环、太阳能聚光器、光伏电池板3个重要方面,提出太阳能3个层次优化利用,进一步强化传热和提高能源利用率,为丰富发展吸附式空调系统理论、低成本高效利用太阳能提供技术支持。     

冷管型太阳能制冷系统

太阳能吸附式制冷作为一种绿色环保型的制冷技术具有良好的应用前景。本文分析了一种吸附床可直接吸收太阳能的、自身完成集热与制冷的玻璃管型太阳能吸附式制冷管,并介绍了以该冷管为基础的太阳能制冷系统。     

固休整有附式制冷技术及其研究进展

固体吸附式制冷技术是一种能有效利用太阳能及工业余热的对环境无不新型制冷技术，对固体吸附制冷技术的发展历程及研究现状进行了一定 总结，对固体吸附制冷技术近两年的一些研究热点及其产业化进行了分析。     

对太阳能固体吸附式制冷技术的应用分析

本文介绍了太阳能作为驱动热源的固体吸附式制冷系统的基本组成,依据Polnyi吸附势理论和D-R方程对系统的吸附一解吸过程进行了比较准确的描述,着重对固体吸附式制冷技术的实际应用技术分析。主要必须考虑：在对吸附系统的研究中引入“非平衡吸附”概述进行了动态吸附速度的测定,尽可能地选用带有吸收膜的集热器,以及改善吸附床的传热传质性能等。     

Review of solar sorption refrigeration technologies: Development and applications

In this paper, a review of the research state of art of the solar sorption (absorption and adsorption) refrigeration technologies is presented. After an introduction of basic principles, the development history and recent progress in solar sorption refrigeration technologies are reported. The application areas of these technologies are categorized by cooling temperature demand. It shows that solar-powered sorption refrigeration technologies are attractive alternatives that not only can serve the needs for air-conditioning, refrigeration, ice making and congelation purposes, but also can meet demand for energy conservation and environment protection. However, a lot of research work still needs to be done for large-scale applications in industry and for the replacement of conventional refrigeration machines.     

Recent progress in the adsorption heat pump technology

吸附热泵是一种以低品位热能驱动的节能环保型热泵技术,利用吸附剂与吸附质间的吸附热实现制冷或制热效果,从文献检索结果来看该技术越来越受到广泛关注,国内外相关学者开展了大量的研究工作.本文首先介绍了开展吸附热泵相关研究的课题组和其主要研究方向,进而简要介绍了吸附式热泵技术;其次,着重描述了吸附热泵技术的国内外研究现状,对吸附工质的研究,床层的传热传质强化,热泵新技术及商业化热泵产品等进行了详细的叙述;最后,叙述了吸附式热泵当前存在的主要问题,指出了吸附热泵发展存在的挑战性问题和未来的发展方向.     

Study on intermittent refrigeration phenomenon for solar solid adsorption refrigeration

A valveless solar solid adsorption ice maker has been used for carrying out experiments under real solar radiation intensity conditions. Different performance variations of the solar ice maker are obtained under the effect of sky cloudy cover. The experimental results indicated that the performance of the solar ice maker was severely affected by the sky cloudy cover, and no ice would be obtained if cloudy conditions prevailed for intervals exceeding 3 h. A heat and mass transfer model validated by the experiments has been used to analyze intermittent refrigeration phenomenon of solar solid adsorption refrigeration. The performance variation due to the effecting of sky cloudy cover has also been demonstrated by simulated results. The analysis of both experimental and simulated results has provided an objective climate resource choice which could be available now in applications to solar solid refrigeration, it also has made a scientific analysis method for solar solid adsorption ice maker application.     

Progress in the development of solid–gas sorption refrigeration thermodynamic cycle driven by low-grade thermal energy

Heat-powered solid–gas sorption refrigeration technology has been regarded as one of the effective methods for reutilization of low-grade thermal energy such as industrial waste heat, renewable energy, and exhaust gases from engines. A number of advanced solid sorption refrigeration systems have been developed to improve energy efficiency by reducing the primary energy consumption as the recognition of energy saving. These advanced solid sorption refrigeration cycles mainly include heat recovery sorption cycle, mass recovery sorption cycle, mass and heat recovery sorption cycle, double/multi-effect sorption cycle, combined double-way sorption cycle, double-effect and double-way sorption cycle, two/multi-stage sorption cycle, etc. In this paper, the progress in the development of solid–gas sorption refrigeration thermodynamic cycle is reviewed. The operating principles of these advanced solid–gas sorption refrigeration cycles are introduced in detail, and the representative working performances of different sorption refrigeration cycles are presented and compared. Moreover, the key problems of advanced sorption refrigeration cycles are described and discussed. Finally, the future development of solid–gas sorption refrigeration cycle is also proposed.     

吸附剂固化的发展与固化活性炭块的试验研究

吸附剂的固化成型被认为是增大吸附式制冷系统的制冷量一个可行的方法。本文一方面综述了吸附系统中吸附剂固化的发展现状，讨论各种固化技术和方法。另一方面总结了在我们实验室所涉及的活性炭固化研究工作，给出了以块状活性炭一甲醇为吸附工质对时比较合适的固化工艺参数。     

Major applications of heat pipe and its advances coupled with sorption system: a review

Heat pipe utilizes continuous phase change process within a small temperature drop to achieve high thermal conductivity. For decades, heat pipes coupled with novel emerging technologies and methods (using nanofluids and self-rewetting fluids) have been highly appreciated, along with which a number of advances have taken place. In addition to some typical applications of thermal control and heat recovery, the heat pipe technology combined with the sorption technology could efficiently improve the heat and mass transfer performance of sorption systems for heating, cooling and cogeneration. However, almost all existing studies on this combination or integration have not concentrated on the principle of the sorption technology with acting as the heat pipe technology for continuous heat transfer. This paper presents an overview of the emerging working fluids, the major applications of heat pipe, and the advances in heat pipe type sorption system. Besides, the ongoing and perspectives of the solid sorption heat pipe are presented, expecting to serve as useful guides for further investigations and new research potentials.