Experimental dataset for system identification of a dual-phase gas–liquid transmembrane pressure system

The data presented in this article describe the dynamic input–output responses of a dual-phase gas–liquid transmembrane pressure system operating under different water flow rates and actuator excitations. The dataset is acquired from a laboratory-scale experimental platform consisting of interconnected CO₂ gas and water channels separated by a porous polytetrafluoroethylene (PTFE) membrane module. The gas and water control valves are used to regulate the gas and liquid flow paths, while the liquid channel is supplied by a controlled water pump. Gas inlet pressure and water outlet pressure are measured using industrial pressure transducers and synchronously acquired by a Siemens S7-1200 programmable logic controller at a sampling frequency of 1 Hz.本文所呈现的数据，描述了在不同水流速率与执行器激励工况下运行的气液两相跨膜压力系统的动态输入输出响应。本数据集源自一套实验室规模的实验平台，该平台由被多孔聚四氟乙烯（PTFE）膜组件分隔的连通式二氧化碳（CO₂）气路与水路组成。气路与水路的控制阀用于调节气、液两相的流路，其中水路由受控水泵提供流体。工业压力传感器用于采集气路入口压力与水路出口压力，并通过西门子S7-1200可编程逻辑控制器以1 Hz的采样频率完成同步数据采集。