Research Equipment: Pump for Thermodynamic Flow Calorimeter

一个双缸，反向传动，比例正排量泵正在获得用于提供一个恒定的，准确的流量量热计系统。量热计目前被用来测量煤衍生液体中显示缔合效应的模型化合物混合物的焓。目前所研究的体系是间甲酚、喹啉、四氢萘三元体系。测量是在高温（700K）和压力（13MPa）下获得的，其中高沸点流体系统的实验数据非常少。目前正在开发一种自动流量量热计系统。预计这种量热计将大大简化数据收集工作。这将导致为那些无法使用相关方法的流体（如极性缔合液体）建立一个数据库。

A double-cylinder, opposing transmission, proportioning positive displacement pump is being acquired for use in providing a constant, accurate flow calorimeter system. The calorimeter is presently used to measure the enthalpy of model compound mixtures exhibiting effects of association present in coal-derived liquids. The current system under study is the m-cresol, quinoline, tetralin ternary system. Measurements are obtained at elevated temperatures (700K) and pressures (13MPa) where experimental data for higher boiling fluid systems are very scarce. Development of an automated flow calorimeter system is currently underway. It is anticipated that this calorimeter will greatly simplify the data collection effort. This will result in the development of a data base for those fluids, such as polar associating liquids, for which correlation methods are not available.