Plotting T-s Diagram Using Experimental Values

[atsl88]

Dear all

This is my first post in Physics Forum, so please do pardon if I do anything wrong.

Homework Statement

I have done an experiment using the following "Steam Power Plant".

http://www.turbinetechnologies.com/steam.html

I have managed to obtain pressure readings and temperature readings at the boiler, the turbine inlet and the turbine outlet respectively. These readings are taken when the inlet pressure is relatively stable.

I find the respective entropy using the steam table, sfg for boiler and outlet, s(superheated) at the inlet.

After I plotted on results, here is what I get http://s930.photobucket.com/albums/ad147/atsl88/Physics%20Question/?action=view&current=matlab.jpg .

It does not look like something that I can extrapolate into a T-s curve.

Homework Equations

The Attempt at a Solution

After serious thinking, it seems that at any time, I'll get 3 discrete values at the 3 mentioned locations, which will produce the above results and does not allow me to draw a T-s diagram.

I hope some one will be able to give me a little advice on what to look at next.

Best regards

Adrian

 

[mark726]

Dear Adrian,

First of all, welcome to the Physics Forum! It's great to see new members joining the community.

Regarding your experiment, it seems like you have obtained some interesting results. However, in order to create a T-s diagram, you will need more data points. It looks like you only have three data points at the moment, which is not enough to create a curve. I would suggest taking more readings at different pressure and temperature points to get a better understanding of the behavior of the steam in your system.

Additionally, have you considered the possibility of using a thermodynamic software to plot your results? This could give you a more accurate and detailed T-s diagram. Another option could be to use a steam table with more data points to get a better representation of the steam's behavior.

I hope this helps and good luck with your experiment!