I need help finding the temperature rise of a liquid (specifically diesel) due to a pressure increase. The system contains a pump at 500 hp and runs at 524 gpm. The inlet temperature is 75 F and the pressure is 150 psi. The exit pressure is about 1155 psi. I have the specific gravity as 0.841. I've reduced my formula to -W=m(h1-h2) where W is the work of a pump, m is the mass flow rate, and h1 and h2 are the enthalpies. I've calculated the mass flow rate to be 3688 lb/min and the work as 21,204 Btu/min. Now, I'm stuck because I can't find the enthalpy for h1 to solve for h2. When I have h2, I was going to use that and the exit pressure to find the final temperature. So, am I doing this correctly? And if so, how can I determine h1? I can't find any enthalpy/pressure/temperature tables for diesel.