| Title |
An Experimental Study for Manufacturing MPCM Slurry and Its Application to a Cooling System |
| Keywords |
MPCM ; 미립캡슐잠열재 ; PCM ; 상변화물질 ; Microencapsulation ; 미립화 ; Durability ; 내구성 ; Cooling system ; 냉방설비 |
| Abstract |
The present study has been conducted for manufacturing MPCM(microencapsulated phase change material) slurry with in-situ polymerization and proving their applicabilities for cooling system. The surface of MPCM is composed of melamine, while tetradecane, paraffin wax, is centered in the MPCM. The produced capsules are observed by the optical microscope and SEM for superficial shapes. Their thermal properties are measured by DSC. Their size distributions are observed by FA particle analyzer. A narrow size distribution from 1 to 10m with 5m of average diameter was observed. Melting temperature was 6.7℃. The durability of MPCM was tested with various types of pump such as centrifugal, peristaltic, and mono pumps. During 10000 cycles the fraction of broken capsules was smaller than 6% for the centrifugal and peristaltic pumps, while bigger value of 8% for the mono pump. A cooling system, which adopted MPCM slurry as a media for transporting cold thermal energy, was designed to investigate the performance of the MPCM. The discharging times of 10 and 20wt% MPCM slurry were lasted up to 105 and 285 minutes longer, respectively, than the water cooling system. |