摘要
设计制作了一种类似于热管、以13X分子筛-水为工质对的吸附制冷单管,吸附制冷单管直径为19 mm,吸附制冷单管由吸附床段和蒸发\冷凝段组成,其中吸附床段长800 mm,蒸发冷凝段长260 mm。吸附制冷系统由吸附制冷单管、管式电炉和数据采集装置组成,利用本装置对影响吸附制冷单管性能的循环周期、吸/脱附时间比进行了一系列实验研究,并利用数值模拟对分析结果进行了理论分析。研究表明:当吸附时间和脱附时间相等时,在不同脱附温度下,循环周期存在一个相应的最佳值,脱附温度越高,相应的最佳循环周期越长;适当增加一个循环周期内吸附时间所占比例可有效提高单元管制冷功率。对于此吸附单元管,在脱附温度为310℃时,吸附时间35 min、脱附时间25 min时,吸附制冷单管制冷功率达到最大值4.97 W,其单位质量吸附剂的制冷功率SCP为57.73W/kg,比吸附时间和脱附时间均为30 min时的制冷功率提高6.65%。
The adsorption refrigeration tube（ART）,just like heat pipe,was designed and built. Zeolite 13 X and water were used as working pair. The diameter of adsorption refrigeration pipes is 19 mm. The adsorption refrigeration pipe is made up of adsorbent bed and evaporator /condenser. The length of the former is 800 mm,while the latter is 260 mm. The experimental device was made up of ART,tube furnace and data acquisition instrument. A series of experiments was done with this system. The influence of some specific parameters on refrigeration capability was studied to improve the performance of ART. Based on the experiment results and numerical analyses,some conclusions could be drawn. Researches show that when the adsorption time is equal to desorption time,there is an optimum cycle time,and the optimal time changes with the desorption temperature. The higher desorption temperature,the longer optimal cycle time; appropriate increase of the proportion of adsorption time in one cycle can improve the cooling power of ART.When the heat source temperature is 310 ℃,the adsorption time is 35 min and desorption time is 25 min,the cooling capacity and specific cooling performance（ SCP） of ART used in the research are 4. 97 W,57. 73 W / kg,respectively. These values increased by 6. 65% compared to the ones where the adsorption time and desorption time are all 30 min.
出处
《低温工程》
CAS
CSCD
北大核心
2014年第5期63-70,共8页
Cryogenics
基金
河南省重点科技攻关(132102210052)
河南省教育厅科学技术研究重点项目(13B480295)
关键词
吸附制冷
吸附制冷管
循环周期
制冷量
adsorption refrigeration
adsorption refrigeration tube（ART）
cycle time
refrigerating capacity
