摘要
基于准稳态理论,建立了准稳态量热器,可用于常压下250～400 K物质的融解热、固相和液相比热容的实验测量.利用量热学中测定比热容的标准物质正庚烷对量热器进行了标定,用标定后的量热器测量了水的比热容,用于检验量热器的准确性和可靠性,测量结果与文献值比较偏差不大于1%.利用文中建立的准稳态量热器,测量了石蜡的融解热、固相及液相比热容,这些数据可用于空调冷凝器蓄热系统的设计和计算.
A calorimeter based on the quasi-steady state theory was developed to measure the latent heat of fusion and specific heat capacity of substance from 250K to 400K at atmosphere pressure. The calorimeter was calibrated by means of measuring the specific heat capacities of n-heptane and verified by measuring the specific heat capacities of water. The deviation of measured results from the accurate values reported in the literature is within 1 percent. The latent heat of fusion and specific heat capacities in solid and liquid of paraffin wax which could be used to store thermal energy from condensers in air-conditioning were measured with this calorimeter.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2005年第9期958-961,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金重点资助项目(50336020).
关键词
准稳态理论
量热器
融解热
比热容
quasi-steady state theory
calorimeter
latent heat of fusion
specific heat capacity
作者简介
赵小明（1959～），男，副教授。
