Adsorption refrigeration- : An efficient way to make good use of waste heat and solar energy
Adsorption refrigeration- : An efficient way to make good use of waste heat and solar energy
复制标题
DOI：
10.1016/j.pecs.2006.01.002
复制
发表时间：
2006
影响因子：
29.5
通讯作者：
Ruzhu Wang;R. G. Oliveira
中科院分区：
文献类型：
--
作者：
Ruzhu Wang;R. G. Oliveira
本文介绍了自20世纪70年代末以来在固体吸附式制冷原型方面取得的成就，当时人们对吸附系统的兴趣重新燃起。包括的应用是制冰和空调。后者不仅包括冷却和加热，还包括干燥剂系统。提出的原型设计使用废热或太阳能作为主要热源。废热可以来自柴油发动机或发电厂，在联合冷却，加热和电力系统（CCHP）中。目前的吸附式太阳能制冰机技术允许每天生产4至7 kgm-2太阳能集热器的冰，太阳能性能系数（COP）在0.10至0.16之间。所研究的硅胶冷水机组可以由高于55°C的热水提供动力。COP通常在0.2-0.6左右，在一些商业生产的机器中，它可以高达0.7。讨论了冷热电联供系统、医院、建筑物和粮库中制冷机组的应用。尽管固体吸附系统具有许多优点，但仍存在一些缺点，如比冷功率（SCP）和COP低。因此，一些技术，以克服这些问题，也被认为是连同其广泛的商业化的前景。在这些技术中，特别注意创新的吸附剂材料，先进的循环和热管，这是合适的设备，不仅可以改善传热，而且还可以帮助避免腐蚀的吸附器。作者的研究小组最近使用采用复合吸附材料和热管的机器进行的实验表明，在-20 °C的蒸发温度和115°C的生成温度下，可以实现770 Wkg − 1的盐SCP和0.39的COP。
This paper presents the achievements gained in solid sorption refrigeration prototypes since the end of the l970s, when interest in sorption systems was renewed. The applications included are ice making and air conditioning. The latter includes not only cooling and heating, but also dehumidification by desiccant systems. The prototypes presented were designed to use waste heat or solar energy as the main heat source. The waste heat could be from diesel engines or from power plants, in combined cooling, heating and power systems (CCHP). The current technology of adsorption solar-powered icemakers allows a daily ice production of between 4 and 7kgm−2of solar collector, with a solar coefficient of performance (COP) between 0.10 and 0.16. The silica gel–water chillers studied can be powered by hot water warmer than 55°C. The COP is usually around 0.2–0.6, and in some commercially produced machines, it can be up to 0.7. The utilization of such chillers in CCHP systems, hospitals, buildings and grain depots are discussed. Despite their advantages, solid sorption systems still present some drawbacks such as low specific cooling power (SCP) and COP. Thus, some techniques to overcome these problems are also contemplated, together with the perspectives for their broad commercialisation. Among these techniques, a special attention was devoted to innovative adsorbent materials, to advanced cycles and to heat pipes, which are suitable devices not only to improve the heat transfer but also can help to avoid corrosion in the adsorbers. Recent experiments performed by the research group of the authors with machines that employ composite adsorbent material and heat pipes showed that it is possible to achieve a SCP of 770Wkg−1of salt and COP of 0.39 at evaporation temperatures of −20°C and generation temperature of 115°C.