Development of high-efficiency water sorption refrigerator using an inorganic salt-supported carbonaceous sorbent

2011 Fiscal Year Final Research Report

• Project/Area Number: 21560880
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Kanazawa University
• Principal Investigator: KUMITA Mikio 金沢大学, 自然システム学系, 准教授 (60262557)
• Co-Investigator(Kenkyū-buntansha): KODAMA Akio 金沢大学, 機械工学系, 教授 (30274690)
• Project Period (FY): 2009 – 2011
• Keywords: 省エネルギー / 吸着冷凍機 / 金属塩添着 / 活性炭素繊維 / 水蒸気収着

Research Abstract

To improve a cold output from water sorption refrigerators, we focused on sorption materials, and examined HDACF(High-Density Activated Carbon Fiber) and/or CaCl_2/HDACF composite sorbent for preparation procedures, water sorption performances and heat transfer enhancement. Experimental results showed that HDACFs with various apparent densities could be obtained from phenolic fibers by a hot-briquetting, carbonization and activation treatments. CaCl_2/HDACFs, which were easily prepared by a solution impregnation method, have superior water sorption performance in the lower vapor pressure range. HDACF could be combined with aluminum materials such as fine wires, wire mesh and fine particles. These results indicated that HDACF or CaCl_2/HDACF composite sorbent would be promising materials for high efficiency water sorption refrigerators.