Let’s use a simple and easy-to-understand example from the field of chemical engineering to explain Bernoulli’s equation
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This post was last edited by HaiZhiYe on 2015-12-5 at 20:23. It’s for use in classes; it’s intended for students in secondary vocational schools. The content should be related to chemical engineering, but not too complex, so that students can understand it. I have many examples from everyday life (you don’t need to use those); it’s best to have examples related to chemical engineering that can be explained in one or two sentences. For instance: “In chemical production, for example……………………, the conversion between XX energy and XX energy is utilized, based on Bernoulli’s equation.” Thank you!
Simply put, it’s a pump, or things like toilets in daily life – they are everywhere
Steam ejector, differential pressure flow meter
No need to talk about these; instead, let’s discuss how to start and stop the pump, and also cover the principles of fluid flow
It would be better to start with the practical operations and then introduce the theory
In Bernoulli’s equation, the sum of the three forms of energy – kinetic energy, potential energy, and static pressure energy – remains constant. Kinetic energy refers to the flow of a liquid within a pipe, whether it flows fast or slow ； Potential energy is the potential energy associated with the height of the liquid above the centerline of the pump inlet, while static pressure energy refers to the level of pressure present.
Thank you! According to the learning plan, when covering Bernoulli’s principle, centrifugal pumps have not yet been taught.
Thank you to everyone above! That is, in class, one should use concise language to give an example of the application of Bernoulli’s principle in the field of chemical engineering! Can it be expressed as follows: \"In chemical production, if energy losses are not taken into account and a centrifugal pump is used to deliver liquid upward at a constant speed, why is it sufficient to know the liquid density ρ and the delivery height z in order to determine which centrifugal pump to use (in terms of shaft power and efficiency)?\" “ Guide the students to answer: “It is by using Bernoulli’s equation: W (work done on the centrifugal pump) = ρgz (kinetic energy and static pressure energy remain unchanged).””