The absolute pressure of gas in a vessel is given as 400 kPa. Expressed the pressure in the form of gauge pressure. Identify if the gauge pressure is negative or positive. Take the atmospheric pressure as 101.3 kPa. Answer:

Steam flows in a Schedule 40, 6" (NPS) nominal pipe size 1000 ft long pipe, with roughness 45 micron. The steam enters the pipe at 200 oC. The steam flow rate is 45,000 lb/hr and the pressure at the entrance of the pipe is 10 bar. The pipe is well insulated and the flow of steam is considered isothermal. Assume that the steam behaves as an ideal gas with constant viscosity 0.018 cp. The molecular weight of steam is Mw=18 kg/kmol. Calculate the pressure of the steam at the outlet of the pipe (in bar)

Chemical Engineering A tank contains 1 kg mass gas whose density is 700 kg/m3. The pressure is increased from 1 bar to 3 bar. The approximate specific boundary work of the system is Cannot be find since some data is missing 285 kJ/kg 0 kJ/kg 0.285 kJ/kg

An insulated cylinder having an initial volume of 2 ft3 contains carbon dioxide at 15 psia and 440oF. The gas in then compressed to 200 psia in a reversible adiabatic process. Calculate the final temperature and the work (in Btu) involved during this process.