A flowing liquid has kinetic energy as a function of its velocity. When its velocity increases:

When a liquid flows, its kinetic energy is directly related to its velocity. According to Bernoulli’s principle, as the velocity of a flowing fluid increases, the pressure energy (or potential energy) associated with the fluid decreases. This relationship indicates that the total energy in a streamlined flow is constant, meaning if the kinetic energy increases due to a higher velocity, the potential energy manifested as pressure must decrease to maintain energy conservation.

In practical terms, if you imagine a pipe where the fluid is flowing through a section and the velocity increases, the increase in kinetic energy comes at the expense of the pressure within that section of the pipe. As a result, the fluid experiences a drop in pressure energy, highlighting the inverse relationship between these two forms of energy.

This understanding is fundamental in many refrigeration and fluid dynamics applications, ensuring that systems are designed to accommodate changes in flow velocities without compromising efficiency or safety.