Adsorption heat pump using porous materials - Development of environmental friendly energy system

本课题是由化学、化工、建筑等领域的研究人员对吸附式热泵技术进行研究。本课题的研究目标是：（1）提高AHP系统的输出能力;（2）促进AHP模块中的传热传质扩散;（3）研究冷热能有效利用系统的优化控制技术。在系统设计方面，提出了采用圆盘模块式吸收器的醇/活性炭吸收式热泵系统，以实现高品质、高功率的冷热能生产。实验研究了AHP操作中吸附和再生过程的传热传质特性。发现吸附/再生循环周期比SAC的填充床型吸附器短约10倍。SAC调节降低了单位重量的平衡吸附量，但增加了AHP系统单位时间的冷热量输出。本系统在约350 K的再生温度下工作良好，并且容易在约270 K下产生冷热量。它的结论是，AHP制作与建议的磁盘模块吸附器单元可以用作一个紧凑的制冷单元，用于产生低于273 K的冷热能，通过使用低温废热能源。其次，多孔二氧化硅材料的吸附性能，即，沸石，FSM-16，MCM-41和无定形二氧化硅，通过各种物理化学技术表征。结果表明，它们的表面具有对某些化学反应具有活性的自由基位点。最后，以工厂冷心驱动的AHP为热源，对包括办公室、住宅和商店在内的局部热能系统进行了模拟。阐明了在地方能源系统中使用层次分析法的有效性。

In this project, adsorption heat pump (AHP) technology was investigated by the researchers in the field of chemistry, chemical engineering and architecture. The aim of this project is (1) increase in the output of AHP system, (2) the promotion of heat and mass transfer diffusion in the AHP module, and (3) the optimization and controlling technology of the effective system for use of cold heat energy. As for the system design, the alcohol/activated carbon absorption heat pump (AHP) with a disk-module -type absorber was also proposed for producing of high quality and high power cold heat energy. The heat and mass transfer characteristics in adsorption and regeneration processes of the AHP operation were experimentally investigated. It was found that the adsorption/regeneration cycle period was about 10 times shorter than that of the packed-bed-type adsorber of SAC. The equilibrium adsorption capacity per weight was reduced by SAC modulation, but the cold heat output per unit time of the proposed AHP system was enlarged. The present system works well with regeneration temperatures of around 350 K and readily generates cold heat at around 270 K. It is concluded that AHP fabricated with the proposed disk-module adsorber units can be used as a compact refrigeration unit for generating cold heat energy below 273 K by using a low temperature waste heat energy source. Secondly, the adsorption properties of porous silica materials, i.e., zeolites, FSM-16, MCM-41 and amorphous silica, were characterized by various physico-chemical techniques. It was found that they have radical sites which is active for some chemical reactions on their surfaces. Finally, the local heat energy system, including offices, residences and stores, with AHP drove by cold heart from factories as heat sources was simulated. The effectiveness of the use of AHP for the local energy system was clarified.