广州化工
廣州化工
엄주화공
Guangzhou Chemical Industry
2015年
22期
69-71
,共3页
丁德锋%郑国杰%刘世杰%郑超瑜%陈武
丁德鋒%鄭國傑%劉世傑%鄭超瑜%陳武
정덕봉%정국걸%류세걸%정초유%진무
T-history曲线法%三水合醋酸钠%潜热%导热系数
T-history麯線法%三水閤醋痠鈉%潛熱%導熱繫數
T-history곡선법%삼수합작산납%잠열%도열계수
T-history method%sodium acetate trihydrate%latent heat%thermal conductivity
三水醋酸钠(CH3COONa·3H2O)经过添加增稠剂和成核剂后具有广阔的应用前景,而其热物性参数影响着蓄热器的设计计算。 T-history曲线法( Temperature History Method)简单实用,方便快捷。经水浴实验后,求得混合材料的固态导热系数为0.77 W/( m·℃),液态导热系数为1.12 W/( m ·℃),相变潜热为247.6 kJ/kg,与利用差示扫描量热法( Differential Scanning Calorimetry)测得混合材料在循环过程中的相变潜热值误差维持在7.2%内,能够满足实际使用要求。
三水醋痠鈉(CH3COONa·3H2O)經過添加增稠劑和成覈劑後具有廣闊的應用前景,而其熱物性參數影響著蓄熱器的設計計算。 T-history麯線法( Temperature History Method)簡單實用,方便快捷。經水浴實驗後,求得混閤材料的固態導熱繫數為0.77 W/( m·℃),液態導熱繫數為1.12 W/( m ·℃),相變潛熱為247.6 kJ/kg,與利用差示掃描量熱法( Differential Scanning Calorimetry)測得混閤材料在循環過程中的相變潛熱值誤差維持在7.2%內,能夠滿足實際使用要求。
삼수작산납(CH3COONa·3H2O)경과첨가증주제화성핵제후구유엄활적응용전경,이기열물성삼수영향착축열기적설계계산。 T-history곡선법( Temperature History Method)간단실용,방편쾌첩。경수욕실험후,구득혼합재료적고태도열계수위0.77 W/( m·℃),액태도열계수위1.12 W/( m ·℃),상변잠열위247.6 kJ/kg,여이용차시소묘량열법( Differential Scanning Calorimetry)측득혼합재료재순배과정중적상변잠열치오차유지재7.2%내,능구만족실제사용요구。
Sodium acetate trihydrate added carboxymethyl cellulose and sodium pyrophosphate has a wide application prospect. At the same time, the thermophysical properties of sodium acetate trihydrate affect the design calculation of heat accumulator. T-history Method is a simple practical, convenient and rapid method. After water-bath experiment was carried out, the solid thermal conductivity was 0. 77 W/(m·℃), liquid thermal conductivity was 1. 12 W/(m·℃). At the same time, the latent heat was 247. 6 kJ/kg, the deviation compared with the latent heat based on Differential Scanning Calorimetry was below 7. 2%, which was acceptable for engineering use.
