Engineering Research Equipment Grant: An Automated Flow Calorimeter for Heat Capacity and Enthalpy Measurements

该设备项目涉及开发和建设一个 热物理研究用自动流动量热计 非电解质流体的性质。 量热计的工作温度为 高温（289- 700 K）和压力（0- 30 MPa）， 自动监测和控制。 它将测量等压热 高精度（+/-.1%）的液体，蒸汽， 和超临界区，两相转变，和热的 蒸发导致热力学表面的精确图。 热量计将围绕现有的精度 计量泵，这将缓解流量测量的问题。 的 热量计将使用电功率输入来直接测量 热性能 流动系统的设计应确保 用于测量等温节流等特性的模块 系数、密度、热导率和粘度可以稍后确定。 补充说

This equipment project involves the development and construction of an automated flow calorimeter for the study of the thermophysical properties of non-electrolyte fluids. The calorimeter will operate at high temperatures (289-700K) and pressures (0-30MPa) and will be automatically monitored and controlled. It will measure isobaric heat capacities with high precision (+/- .1 percent) in the liquid, vapor, and supercritical regions, two-phase transitions, and heats of vaporization resulting in an accurate map of the thermodynamic surface. The calorimeter will be constructed around an existing precision metering pump which will alleviate problems with flow measurement. The calorimeter will use an electrical power input to directly measure thermal properties. The flow system will be designed so that addition of modules to measure properties such as isothermal throttling coefficient, density, thermal conductivity, and viscosity can be later added.