How Does MBWR-32 Help in Plotting Density Deviation for R134a?

[alexisonsmith]

So by using the Jacobsen-Stewart modified 32-term BEW equation(MBWR-32) I am trying to calculated a graph which shows the deviation of density(y-axis) against temperature(x-axis)

I can calculate the pressure in terms of density using the following equation: P = ~ a,(T)p" + e-(p/~ )2 ~ a,(T)p 2"-17

I have the critical value for the pressure,density etc. However I do not know how to calculate the calculated density...

If you see the attachment I am trying to draw Fig 1 on page 21

Thanks

 

[Navin A S]

in advance! To calculate the density based on temperature and pressure, you need to use the MBWR-32 equation. This equation takes the temperature, pressure, and critical values as inputs and returns the density as a result. To draw the graph, you need to provide a range of temperatures and calculate the density for each temperature using the MBWR-32 equation. You can then plot the results on a graph with the temperature on the x-axis and the density on the y-axis.

 

[oswaler]

for sharing your model description of R134a. It sounds like you are using the Jacobsen-Stewart modified 32-term BEW equation (MBWR-32) to calculate the deviation of density against temperature. This is a commonly used equation in thermodynamics and is suitable for calculating the properties of R134a.

To calculate the graph that you are trying to create, you will need to use the equation P = ~a,(T)p" + e-(p/~ )2 ~ a,(T)p 2"-17. This equation allows you to calculate the pressure in terms of density, and you can use it to plot the pressure-density relationship on your graph.

You mentioned that you have the critical values for pressure and density, but you are unsure how to calculate the calculated density. The calculated density can be obtained by solving the equation for density, using the known values for pressure and temperature. This will give you a point on your graph that corresponds to the given pressure and temperature.

I hope this helps with your calculations and graphing. It's important to carefully consider the equations and values you are using, as well as the units and accuracy of your data, to ensure the accuracy and reliability of your results. Good luck with your research!