flow between pressure of 90 and 15 psia. if the air is undergoing a process that follows pVn=C, where n=1.5, what is the non-flow w

Water enters a boiler at a temperature of 120 °F. The boiler produces 3,500 lb/hr of steam at a pressure of 140 psia. How many Btu/hr are required?

Q4\closed system of 2kg undergoes adiabatic process. The work done on the system is 30000 J. if the relation velocity during the process is (V2² - V12= 216 ) the elevation of system increase from 32M to 77M. Determine the change in internal energy of the system

Refrigerant 134a expands in a piston-cylinder assembly from p₁= 200 lb/in² and T₁ = 140°F to p₂ = 30 lb/in² and T₂ = 80 °F. The mass of refrigerant is 0.46 lb. During the process, the work done by the refrigerant is 4.32 Btu. Kinetic and potential energy effects are negligible. Determine the initial volume of the refrigerant, V₁, in ft³, and the heat transfer for the process, in Btu. Step 1 * Your answer is incorrect. Determine the initial volume of the refrigerant, V₁, in ft³. V₁= 0.105743 ft3