Power input to compressor in simscape

Hi,

I am currently doing my final year project which requires me to model the compression process of air. The compressor needs large amount of work input (according to thermodynamics) and I have tried various ways to power the compressor but every time i have failed. Can you please put some light onto it and advise me on how to power the compressor in simscape such that i could obtain the desired pressure and temperature after the compression process. Is it possible for me to deal with enthalpies of air to provide power input to the compressor as i am a mechanical engineering student?

Regards

Answer 1

[Riya]

Hello FIZYAAN KHAN FIROZ KHAN PATHAN,

I see that you want to know how to power the compressor in simscape such that you can obtain the desired pressure and temperature after the compression process.

Please note that there are several approaches you can consider to power the compressor and achieve the desired pressure and temperature after compression. Here are a few suggestions:

1. Constant power input: You can provide a constant power input to the compressor. This can be achieved by using a Simulink block, such as a Constant block or a Signal Generator block, to generate a constant power signal.

2. Variable power input: Instead of a constant power input, you can use a variable power input to the compressor. This can be accomplished by using a control system or a feedback loop to adjust the power input based on the desired pressure and temperature.

3. Enthalpy-based power input: The change in enthalpy can be calculated using the specific heat capacity of air and the temperature change. Once you have the change in enthalpy, you can convert it to power using the time taken for the compression process. This approach allows you to directly relate the power input to the thermodynamic properties of air.

It's also important to consider factors such as heat transfer, pressure losses, and any other relevant effects in your model.

I hope it helps!