CAJ | 학술논문

利用绝热边界条件模拟了无限大平板的导热,提出了基于多点测温的自热反应动力学分析方法(多点法).该方法认为在一维导热下,在系统内某一点的导热方向发生变化的临界时刻,通过该点的导热项为零,此时可以采用类似CPT方法求解得出动力学参数.导热方向发生临界变化的时刻可以通过计算等间距的多点温度的相关系数来确定.与CPT方法和HR方法仅关注中心点温度不同,多点法关注多个测温点的数据,一次实验可以得出多组数据.通过堆积烟草样品的实验将新方法与以上两种方法进行了对比分析,结果证明了新方法的优越性和可靠性.
이용절열변계조건모의료무한대평판적도열,제출료기우다점측온적자열반응동역학분석방법(다점법).해방법인위재일유도열하,재계통내모일점적도열방향발생변화적림계시각,통과해점적도열항위령,차시가이채용유사CPT방법구해득출동역학삼수.도열방향발생림계변화적시각가이통과계산등간거적다점온도적상관계수래학정.여CPT방법화HR방법부관주중심점온도불동,다점법관주다개측온점적수거,일차실험가이득출다조수거.통과퇴적연초양품적실험장신방법여이상량충방법진행료대비분석,결과증명료신방법적우월성화가고성.
Infinite plane slab was simulated by creating adiabatic boundary through physical insulation in this paper,and a new method for measuring self-ignition kinetics based on multipoint temperature under one-dimensional conduction(multipoint temperature method)was proposed. According to the method, under one-dimensional conduc-tion,the thermal conduction of one elementary volume can be neglected when its direction of heat conduction is go-ing through the critical change,which can be determined by the linear dependence coefficient of equidistant multi-point temperature. And then the value of activation energy can be calculated in the same way as the CPT(crossing point temperature)method. Different from the CPT and HR(heat release)methods which focus on the central point, the new method concerns multiple points,which can provide more data from one experiment. A comparison of the three methods is made in the experiments on tobacco,which proves the advantage and reliability of the new method.