技术中心

【英文篇名】 Ice layer thickness measurement device based on an RC resonator 【作者中文名】 石文星; 赵庆珠; 李立一; 刘刚; 【作者英文名】 By Shi Wenxing; Zhao Qingzhu; Li Liyi and Liu Gang Tsinghua University; Beijing; China; 【作者单位】 清华大学; 清华同方股份有限公司; 【文献出处】 暖通空调, Hv 含冰率; RC振荡电路; 测量; 【英文关键词】 ice storage; ice packing factor; RC resonator; measurement; 【摘要】 基于冰、水介电常数和电阻率的显著差别及振荡电路的频率响应原理,提出以精确测量冰层表面空间位置与动态预测冰层增减速度相结合的冰层厚度测量方法,并据此开发出阻容式冰层厚度测量装置。该装置结构简单、安装方便。试验与分析表明,该装置具有良好的测量精度、稳定性和灵敏度,适用于外融式冰板与冰盘管表面结冰与融冰过程中冰层厚度的动态测量。 【英文摘要】 Based on the inductivities and the resistivity differentials between ice and water and RC resonator frequency response principle,presents variable ice layer thickness measurement method of dynamic prediction combined by the precise spatial position measurement,and accordingly develops the RC ice layer thickness sensor which is simple in structure and convenient in installation. Experiments and analyses show that the sensor,with its fine precision,remarkable stability and sensibility,can be applied to the dy...