Chapter 6, Problem 6.59P

A mass-loaded piston/cylinder shown in figure containing air is at 300 kPa, 17°C with a volume of0.25 m³ while at the stops V = 1 m³. An air line, 500 kPa, 600 K, is connected by a valve that is then opened until a final inside pressure of 400 kPa is reached, at which point T = 350 K. Find irreversibility assuming that heat transfer is with the surroundings at 17°C.

The air conditioner in a house or a car has a cooler that brings atmospheric air from 30 degree Celsius to 10 degree Celsius, both state at 101 kPa. For a flow rate of 0.75 kg/s find the rate of heat transfer

150 kJ of work is done in a rigid container while the internal energy increases by 95 kJ. Find the heat transfer, in kJ.

Please be very detailed

.The thermal efficiency of a heat engine is 30%, the heat rejected from the engine is 30kJ, evaluate the heat input to the engine.

A rigid insulated tank is separated into two rooms by a stiff plate. Room A of 0.5 m3 contains air at 250 Kpa, 300 K and room B is 1 m3 has air at 200 Kpa, 1000 K. the plate is removed and the air comes to a uniform state without any heat transferred. find the final temp and pressure of the room. An ideal gas is 45 psig and 800F is heated in a closed container to 130 0F. What is the final pressure? An air bubble rises from the bottom of a well where the temperature is 25 0C, to the surface where the temperature is 27 0C. Find the percent increase in the volume of the bubble if the depth of the well is 5m. Atmospheric pressure is 101.528 kPaa. A 3000 cm3 tank initially contains compressed air at 600 kPag and 28 oC. Determine the mass of air to be withdrawn from the tank to reduce its pressure to 80 kPag while the temperature remains unchanged.

i need the answer quickly

In a turbine, steam enters with an enthalpy of 1275 Btu/lb, and leaves with an enthalpy of 1115 Btu/lbm. The transferred heat is 13 Btu/ibm. Find the turbine work in hp where the steam flow rate is 5 lbm/sec?

Steam enters a turbine at 3500 kPa, 500 C and velocity of 300 m/s and exit at 15 kPa and 25 C. Heat loss is 15 kw. The mass flow rate is 10 kg/s. Find the work output.