What is the name of the spiral chamber in a centrifugal pump where velocity is converted into pressure?

The spiral chamber in a centrifugal pump where velocity is converted into pressure is known as the volute. In a centrifugal pump, liquid enters the impeller and is accelerated outward due to centrifugal force. As the liquid exits the impeller, it enters the volute, which is designed to gradually expand in cross-sectional area. This expansion allows the high-velocity liquid to slow down, converting kinetic energy into pressure energy. The shape of the volute is crucial for efficient conversion and smooth flow transition, which helps to optimize the performance of the pump.

The other options do not accurately describe this function. The inlet is where fluid enters the pump, the chamber does not specifically refer to the part where velocity conversion occurs, and the outlet is where the fluid exits the pump after pressure has been built. Understanding the role of the volute is essential for grasping how centrifugal pumps operate and how they effectively manage fluid transfer.