1.5-ibm of water at 350 psia fill a weighted piston-cylinder device whose volume is 1 ft. the water is then heated at constant pressure until the temperature reaches 550°f. determine the resulting change in the water's total entropy. problem 4 refrigerant-134a at 280 kpa and 50°c undergoes an isothermal process in a closed system until its quality is 40 percent. on per unit mass basis, determine how much work and heat transfer are required.

What is the main objective of using reheat rankine cycle?

Determine the stoichiometric and actual air-fuel ratios and the mole flue gas composition for combustion with 15% excess air for raw indiana, pennsylvania raw coal.

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.