摘要
提出了太阳能供热与制冷联合循环的新思路 .用电加热器替代真空管集热器 ,实物设计了一台太阳能热水器 -冰箱复合机实验装置 .通过多轮实验 ,探索出一种新型、高效率的吸附床设计方法 .这种新型的吸附床以活性炭 -甲醇为工质对 ,由 30根 50 mm、长 750 mm的较小圆柱体并联组成一整体结构 ,在各个吸附圆管内同心地插入 1 0 mm的不锈钢内圆管 ,并在内圆管上按一定的间距均匀打 4 mm的小孔作为制冷剂蒸汽的传质通道 .在内外管之间装入活性炭 ,将外管密封焊接、内管并联起来作为系统制冷剂气体的传质总通道 .实验结果表明 ,经过一个周期的循环 ,能实现制冰 1 0 .5kg/d,达到了 1 kg活性炭制 0 .
A new adsorbent bed in which activated carbon methanol pair is chosen as working pair was designed based on a new idea of hybrid system with combined cycle of solar heating and cooling. This new adsorbent bed is composed of 30 stainless steel tubes, the diameter and length of the tube is 50 mm and 750 mm respectively. Each tube has co axial inner 10 mm tube which have the perforation of 4 mm diameter, each of inner tube is enwrapped by metallic screen to avoid adsorbent fall into inner tube. The annular space between the inner and outer tubes was charged with 22 kg activated carbon in total. Finally, the two sides of outer tube were welded while the inner tube formed a mass flow channel for refrigerant vapour. The results of experiments in which electric heater is used to simulate solar vacuum tubes show that this new adsorbent bed is very efficient, it has good capability of heat transfer and mass transfer. In a working cycle period, the hybrid system in which the new adsorbent bed is adopted can provide 10.5 kg ice. The hybrid system is capable of reaching a specific refrigeration density of 0.5 kg ice/kg adsorbent per day.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2000年第4期469-472,共4页
Journal of Shanghai Jiaotong University
基金
上海市教委曙光计划资助项目
