为满足生物系统热科学实验教学的要求,开发了一种热导式简单量热计。样品池为可变容积单池结构(1~15 mL),检测用热电堆选用半导体制冷组件(TEC1-12704),灵敏度可达3 mV/K。量热计可以工作在流动和非流动模式,时间常数为53 s,灵敏度为175 mV/W,精度为5%,具有简单、小巧、便宜和可扩展等特点。
A simple heat conduction calorimeter for experimental teaching was developed in field of biothermal science. Sample cell has variable volumes from 1 mL to 15 mL. Thermoelectric module (TEC1-12704)as thermopiles has sensitivity of 3 mV/K. The simple calorimeter can work in modes of flow and non-flow with time constant of 53 s, sensitivity of 175 mV/W, precision of 5% , which is simple, compact, cheap and extensible.