制冷技术2024，Vol.44Issue(6)：37-41,5.DOI:10.3969/j.issn.2095-4468.2024.06.107
273.15K以下温区乙醇热力学性质
Thermodynamic Properties of Ethanol in Temperature Range below 273.15 K
邬佳科 1范肖雅 2庄承章 3高如启 1孙靖瑶 1陈琪 1唐黎明1
作者信息
- 1. 浙江大学能源工程学院,浙江 杭州 310000
- 2. 浙江大学工程师学院,浙江 杭州 310000
- 3. 浙江龙泉凯利达汽车空调有限公司,浙江 丽水 323000
- 折叠
摘要
Abstract
In this paper,the thermal properties of ethanol in the temperature range below 273.15 K are studied,including density,viscosity,thermal conductivity and specific heat capacity.The formulas and methods suitable for predicting the thermal properties of fluids at lower temperatures are introduced,including the temperature-dependent relationship of the low-temperature fluid density,exponential fitting,second-order group contribution method and polynomial fitting method.Combined with the existing data,the empirical correlation of corresponding parameters is obtained by using the above method.The results showed that the ethanol density was fitted by the temperature-dependent relationship of the low-temperature fluid density,and the average deviation was 0.390%.Viscosity is fitted by exponential method with an average deviation of 3.64%.The thermal conductivity is fitted by the second-order group contribution method,with an average deviation of 2.213%.The specific heat capacity is fitted by quadratic polynomial with an average deviation of 0.195%.关键词
乙醇/热力性质/储冷介质Key words
Ethanol/Thermal properties/Cold storage medium分类
通用工业技术引用本文复制引用
邬佳科,范肖雅,庄承章,高如启,孙靖瑶,陈琪,唐黎明..273.15K以下温区乙醇热力学性质[J].制冷技术,2024,44(6):37-41,5.
