航天器环境工程
航天器環境工程
항천기배경공정
SPACECRAFT ENVIRONMENT ENGINEERING
2013年
5期
522-528
,共7页
航天器%热控%相变材料%热管理
航天器%熱控%相變材料%熱管理
항천기%열공%상변재료%열관리
spacecraft%thermal control%phase change materials%thermal management
随着航天技术的发展，航天器内部仪器设备的功耗和热流密度不断增大，给航天器热控设计带来新的困难，但为相变材料的应用提供了机遇。文章针对相变材料在相变过程中具有温度恒定、没有运动部件等特点，重点介绍了相变材料分类、特性及其在航天器热控设计中的应用，分析了相变材料在工程应用中面临的问题，给出了相变材料在航天器热控技术上应用的发展方向。
隨著航天技術的髮展，航天器內部儀器設備的功耗和熱流密度不斷增大，給航天器熱控設計帶來新的睏難，但為相變材料的應用提供瞭機遇。文章針對相變材料在相變過程中具有溫度恆定、沒有運動部件等特點，重點介紹瞭相變材料分類、特性及其在航天器熱控設計中的應用，分析瞭相變材料在工程應用中麵臨的問題，給齣瞭相變材料在航天器熱控技術上應用的髮展方嚮。
수착항천기술적발전，항천기내부의기설비적공모화열류밀도불단증대，급항천기열공설계대래신적곤난，단위상변재료적응용제공료궤우。문장침대상변재료재상변과정중구유온도항정、몰유운동부건등특점，중점개소료상변재료분류、특성급기재항천기열공설계중적응용，분석료상변재료재공정응용중면림적문제，급출료상변재료재항천기열공기술상응용적발전방향。
Phase change materials (PCM) have a high potential heat of fusion, and by the phase change at the relevant temperature, a large amount of energy can be stored or released. The phase change materials enjoy the following two advantages:the stability in the temperature control and the absence of moving parts. With the development of space technology, the power of electronic devices increases rapidly. On a spacecraft, the thermal control subsystems are used to keep electronic devices within specified temperature limits, and the phase change materials offer a possibility to store the thermal energy directly as the potential heat of fusion. This paper presents the classification and characteristics of phase change materials. The applications of phase change materials are discussed mainly in the context of spacecraft. Finally, the problems in the study and application of phase change materials are analyzed, the direction for the future development of phase change materials is pointed out.
