What should the pressure be at the ejector nozzle in a stream jet cooling system?

In a stream jet cooling system, the pressure at the ejector nozzle is typically around 150 PSIA. This pressure is essential for efficiently creating the necessary vacuum that drives the cooling process. The ejector relies on a high-pressure jet of steam or a gas to entrain a lower-pressure fluid, leading to efficient heat exchange and cooling.

At 150 PSIA, the system operates optimally to achieve the desired cooling effect without risking inefficiencies associated with either too low or too high pressure. If the pressure were significantly exceeded, it could lead to excessive energy consumption or operational instability. Conversely, insufficient pressure might not provide the necessary velocity for proper vapor entrainment and could compromise the cooling efficiency. Therefore, 150 PSIA is the recognized standard to balance these factors effectively in a stream jet cooling system.