Abstract: A novel high-temperature flow calorimetric system of conduction type was designed, and built in which chromatogram was used for on line analysis.The thermal constant at 700 ℃ of the calorimeter was calibrated by the sample electric energy method, and the average result was 21.67 W•mV^-1.The accuracy of the equipment was also validated by standard such as heptane, the result showed that this equipment was reliable.The heat sink values of six kinds of fundamental endothermic hydrocarbon fuels at 700 ℃ were determined by using this equipment.The results showed that the heat sink of NJ-4 was the highest one which is 3.0 MJ•kg^-1, and that of NJ-6 was the lowest one, only 2.6 MJ•kg^-1.

摘要： 为了评价吸热型碳氢燃料基础油的热管理能力，设计并建立了一套高温量热装置，利用电标定法对仪器常数进行了准确标定，平均值为21.67 W•mV^-1，标准偏差0.50.选用正庚烷作为模型燃料，结合仪器的色谱分析系统对仪器量热结果的准确性进行了考察，测量误差1.7％.利用该装置评价了组成吸热型碳氢燃料NJ-150的6种基础油在700 ℃条件下的热沉值，结果显示4号基础油吸热能力最高，可达3.0 MJ•kg^-1以上，其热管理能力也最好，而6号油最低，只有2.6 MJ•kg^-1.另外还考察了各种基础油的吸热速率，同样是4号基础油具有最高吸热速率.