👉 The middle fluid, often referred to as the working fluid or process fluid, is a critical component in various industrial processes and systems, such as hydraulic systems, refrigeration cycles, and chemical reactors. It is the substance that undergoes physical or chemical changes to perform work or transfer energy. In hydraulic systems, for example, it's typically oil that flows through pipes to transmit force and control mechanical movements. In refrigeration, it's a refrigerant that absorbs and releases heat, facilitating cooling. The properties of the middle fluid—such as viscosity, thermal conductivity, and chemical stability—are crucial for the efficiency and effectiveness of these processes.
