流体机械
流體機械
류체궤계
FLUID MACHINERY
2014年
10期
69-72,63
,共5页
相变材料%新戊二醇%部分熔化%蓄能
相變材料%新戊二醇%部分鎔化%蓄能
상변재료%신무이순%부분용화%축능
phase change material%NPG%partially-melted%thermal storage
由于相变材料都有自身的相变温区，实际的相变过程并非等温的，因此相变材料在应用过程中可能会处于部分熔化状态。本文针对新戊二醇（ NPG）进行了3种状态（未熔化状态、部分熔化状态和完全熔化状态）下的步冷试验，试验结果表明NPG降温冷却前所处的状态会影响其相变性能，当其处于部分熔化状态时冷却的过冷度小于其处于完全熔化状态时冷却的过冷度。
由于相變材料都有自身的相變溫區，實際的相變過程併非等溫的，因此相變材料在應用過程中可能會處于部分鎔化狀態。本文針對新戊二醇（ NPG）進行瞭3種狀態（未鎔化狀態、部分鎔化狀態和完全鎔化狀態）下的步冷試驗，試驗結果錶明NPG降溫冷卻前所處的狀態會影響其相變性能，噹其處于部分鎔化狀態時冷卻的過冷度小于其處于完全鎔化狀態時冷卻的過冷度。
유우상변재료도유자신적상변온구，실제적상변과정병비등온적，인차상변재료재응용과정중가능회처우부분용화상태。본문침대신무이순（ NPG）진행료3충상태（미용화상태、부분용화상태화완전용화상태）하적보랭시험，시험결과표명NPG강온냉각전소처적상태회영향기상변성능，당기처우부분용화상태시냉각적과랭도소우기처우완전용화상태시냉각적과랭도。
Because phase change materials ( PCMs) have their own phase change temperature ranges,the actual phase change processes are not fully isothermal,PCMs may be in the partially-melted state during their applications.In this paper,the cooling experiments of neopentyl glycol ( NPG) in three different states,which were the not-melted state,the partially-melted state,and the fully-melted state,were conducted.The experimental results show that the state of NPG affects its phase change performance. When NPG is in the partially-melted state,the degree of supercooling is smaller than that when it is in the fully-melted state.
