본 연구는 저온 유통 시스템을 구축하기 위해 이동식 저온 컨테이너에서 잠열재, 내부온도의 유지특성과 운영조건별 사과의 내부 품온을 살펴보았으며, 그 결과를 요약하면 축냉식 저온유통 체계에서 다목적용 농산물 유통에 적합하도록 , , 3가지 온도대역별 잠열재를 개발하였다. 잠열재는 과 Sodium polyacrylate, 잠열재는 , , Sodium polyacrylate, 잠열재는 , , Sodium polyacrylate를 혼합하여

By considering the storage temperatures of agricultural products, three types of PCMs , , ) were developed to be used in temperature ranges of , and , PCM for was developed by mixture of and soduim polyacrylate, and PCM for and PCM for were mixture of , and soduim polyacrylate with different composition ratio. 'The target temperatures of cold chain system were set at , , and with , and PCMs, respectively. The times to reach the target temperatures in the storage chamber were 21 hours, 18 hours, and 61 hours with , , and PCMs, respectively. The performances of natural convection type and forced convection of the temperature controlled portable container were analyzed Apples were stored in the portable container of , and temperatures at surface and center were measured. The initial temperature of the apple was . The temperatures of apple at the surface and the center were and , respectively, after 5 hours with natural convection type. However, the temperatures at the surface and the center were already reached to within 1 hour with forced convection type. The forced convection type showed the better performance and the temperatures of portable container were maintained more than 15 hours.

• 권기현
• 김종훈
• 정진웅