First Law of Thermodynamics Problem (2 of 2) | Piston with Stops | Closed system | Thermodynamics

Welcome to Engineering Hack! In today's video we are solving the part 2 of a Thermodynamic's problem. We have a piston–cylinder device that contains saturated water vapor and heat is now slowly transferred to the steam until the volume doubles and we want to determine the final temperature, the work done during this process, and the total heat transfer, such well as showing the process on a P-v diagram (pressure on the y-axis and specific volume on the x-axis). The problem requires you to know the first law of thermodynamic that tell us that the change of internal energy will be the combination of the heat and the work being done by the system or to the system, also some other pure properties, such as the specific volume and the definition of work. If you are comfortable with these, you should be fine and can focus on solving the piston and stops situation. Everything else comes by analyzing the problem and the system at hand. Problem statement: A piston–cylinder device initially contains 0.8 m³ of saturated water vapor at 250 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such that a pressure of 300 kPa is required to move it. Heat is now slowly transferred to the steam until the volume doubles. Show the process on a P-v diagram with respect to saturation lines and determine (a) The final temperature, (b) The work done during this process, and (c) The total heat transfer. Answer: a) 663.8 °C b) 240 kJ c) 1217.5 kJ d) (22:19) P-v diagram Water property table: https://drive.google.com/file/d/1n5El... In this video: 00:00 Specific volume 03:08 Interpolation 05:22 Work 06:50 Heat 10:33 P-v diagram 13:15 Final Thoughts 🎓 Can you trust the answers and solutions provided? Well, you never should trust anything 100%. Make sure you are checking for yourself. When I’m solving the questions, I always solve on my own and then check the results against other sources. If there is divergence, I look for more sources. So while I can’t promise you everything will be 100% correct, I can promise I’ve done my due diligence before posting. If you enjoyed this video, please press the bell 🔔, like 👍, comment or share. You're the best, thanks! --------------------------------------------🌍 Please Subscribe:-----------------------------------------=https://www.youtube.com/channel/UCK_Y... ----------------------------------------------------------------------------------------------------------------------- 🎥Watch More Videos: • First Law of Thermodynamics Problem :    • Video   • First Law :    • A better way to understand the first law o...   • Isobaric Compression:    • Isobaric Compression to Half Original Volu...   #Engineeringuniversity #problemsolving #EngineeringHack #engineeringsolutions #engineeringaustralia #engineering #university#propertytables #steamtables