Ejektoreiden

Ejektoreiden, often referred to as ejectors, are devices that utilize a motive fluid, typically a gas or liquid, to entrain and move a secondary fluid. This process relies on the Venturi effect, where the high-velocity motive fluid creates a low-pressure zone that draws in the secondary fluid. As the mixture of motive and secondary fluid then passes through a diffuser section, the velocity decreases, and the pressure increases, allowing the entrained fluid to be discharged at a higher pressure than its initial suction pressure.

Ejektoreiden are broadly categorized based on the motive fluid used, such as steam ejectors, liquid jet ejectors, and air ejectors. Their applications are diverse and span numerous industries. In chemical processing, they are employed for vacuum generation in distillation and evaporation processes, as well as for mixing and pumping fluids. They are also found in refrigeration systems to create low temperatures and in vacuum drying applications.

A key advantage of ejektoreiden is their simplicity and robustness, often lacking moving parts, which translates to low maintenance requirements and reliability. They are also capable of handling abrasive or corrosive fluids without significant wear. However, their efficiency can be lower compared to mechanical pumps, especially when large pressure differentials are required. The design and selection of an ejector depend on factors such as the motive fluid, desired suction pressure, flow rates of both fluids, and discharge pressure.