Recent content by zircons

But where I'm confused is that, for example, the water rises up through the paraffin wax tube. But the amount of water makes the paraffin wax contact angle irrelevant because of the wax's location in the middle of the tube. The water rises above it. Is my reasoning wrong? For b, I feel...

The figures below represent capillaries of varying construction and arrangement. The diameter of the capillary portion is the same in each case, and all of the capillaries are constructed of glass, except where otherwise indicated. The equilibrium rise for water is shown at the left. Draw...

Thanks! But I was talking about getting from the second equation to the third. Also, it may be redundant but it's my engineering book's convention.

I don't understand the calculus behind this thermodynamics concept: S = f(T,P) dS = (∂S/∂T)_P*dT + (∂S/∂P)_T*dP (∂S/∂T)_V = (∂S/∂T)_P + (∂S/∂P)_T*(∂P/∂T)_V Basically, I don't get why and how you get (∂S/∂T) when you divide dS by dT. Also, I don't understand why the constant volume...

Nevermind, figured it out!

Yes, I just posted everything since each one is interrelated. So to start off with, calculating the work: I don't understand how get H3. I thought I could get it via the entropy (S2) since S2=S3, but I don't think there is a relation there. Now I'm thinking I could get it via the compressor...

Homework Statement A conventional vapor-compression refrigeration cycle uses ammonia as the refrigerant. Evaporation and condensation are at -4°C and 34°C respectively and the refrigeration rate is 5kW. The compressor efficiency is 0.75. Assume that the throttle process is isenthalpic...

Oh man, that's the only solution I could think of, but I was hoping I wouldn't need to do the trial-and-error way. My steam tables will require it, along with interpolation :/ Regardless, thank you for your help!

Thank you for your guidance! I have now calculated the entrance quality of steam and exit entropy. However, I'm having trouble with the exit pressure. I know the inlet pressure, volume, quality, and entropy. I know the exit volume and entropy. The exit quality of steam and temperature must...

A compressor adiabatically and reversibly compresses a mixture of saturated water and steam from a pressure 1.02 bar and specific volume of 1.25 m^3/kg to 0.473 m^3/kg. Calculate the fraction of steam at the compressor entrance, the exit entropy, and the exit pressure. For the fraction of...