Solar Energy (태양에너지)
- Volume 17 Issue 2
- /
- Pages.67-74
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- 1997
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- 0253-3103(pISSN)
Preparation of spherical shape of PCM by using sodium acetate trihydrate
Sodium Acetate Trihydrate를 이용한 구형의 PCM 입자의 제조
-
Kim, Jong-Kuk
(Dept. of Chemical Engineering, Konyang University)
;
- Jung, Kyeong-Taek (Dept. of Chemical Engineering, Yonsei University) ;
-
Shul, Yong-Gun
(Dept. of Chemical Engineering, Yonsei University)
;
-
Kim, Dong-Hyung
(Korea Institute of Energy Research)
;
-
Lee, Tae-Kyu
(Korea Institute of Energy Research)
- Published : 1997.06.30
Abstract
Spherical shape of phase change material(PCM) has been prepared by using sodium acetate trihydrate as a latent heat storage medium. Gelatin was used as an effective thickener to prevent undesirable phase separation. Sodium pyrophosphate decahydrate was used as nucleator to decrease the degree of supercooling in the thickened phase change material. Spherical PCM particles of 3-3.5 mm in diameter continuously manufactured with molten PCM with those conditions. The particle size of PCM was not affected by the effluent velocity of molten PCM in range of 1.3-1.8 ml/min. DSC, SEM and XRD were also used to characterize the properties of PCM particles.
잠열 저장물질로서 비조화 축열재인 sodium acetate trihydrate를 사용하여 구형의 PCM 입자를 제조하였다. 비조화 축열재의 단점인 상분리 현상 및 과냉각 현상을 방지하기 위하여 점증제로서 gelatin, 조핵제로서 sodium pyrophosphate decahydrate를 사용하였다. 혼합조성의 용융 PCM을 이용하여 연속적으로 지름이 3-3.5 mm 인 구형 PCM 입자가 제조되었다. 용융 PCM 방출속도가 1.3-1.8 ml/min 인 범위 내에서는 PCM 입자크기가 방출속도에 영향을 받지 않았다. 제조된 PCM 입자의 물성을 측정하기 위하여 DSC, SEM과 XRD를 이용하였다.
Keywords