Which is TRUE about the simplified entropy balance equation below? + masa – mbSp = m2s2 - m,s1 Select one: a. The device has two inlets and two outlets b. The process is performed in a steady-state manner c. The system involves no irreversibilities d. None of the above

Q1: An engineer claimed that his device produces two streams of 1 am air (outlet 1) and 1.5 atm (outlet 2) at temperatures of 460 °R and 635 °R, respectively, if he enters 530 °R of the air at 5.1 atm. If the ratio of outlet 2 to outlet 1 is 0.6, justify the engineer's claim. Assume ideal gas process with a constant heat capacity of 0.24 Btu/lb.°R.

a.Draw a schematic diagram with labels of states of a substance; b.For uniformity purposes, assign STATE 1 at the inlet of a high-pressure turbine. The states must be arranged in a chronological order; c.Plot each cycle in a t-s diagram with the states consistent to the states assignment in the schematic diagram; d.Show a detailed solution.       Consider a regenerative vapor power cycle with a single open feedwater heater. Steam enters the first turbine stage at 12MPa, 500 0C, and expands to 0.3MPa where some steam is extracted and fed to the feedwater heater. The remainder expands through the second-stage turbine and exits at the condenser pressure of 0.01 MPa. Saturated liquid at 0.3 MPa leaves the open feedwater heater. If the net power output of the cycle is 100 MW,and the turbine stages and pumps are isentropic, determine (a) the thermal efficiency, and(b) the mass flow rate of steam entering the first turbine, in kg/h.

Show detailed solution please.

Show both ts and pv diagram. Show the complete and step by step solution. THERMODYNAMICS

Which statement/s are true? Heat is transferred to a system by either an air-sourced Carnot heat pump, an electrical resistance heater or a heat source at temperature marginally higher than the system temperature. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the air-sourced Carnot heat pump.   Heat is transferred to a system either by an 100% efficient electrical resistance heater, or an 100% efficient isothermal heat source. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is zero when heat is added by the isothermal heat source.   Heat is transferred to a system by either an air-sourced Carnot heat pump, an electrical resistance heater, or a heat source at temperature marginally higher than the system temperature. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is maximum when heat is added by the electric resistance heater.   Heat is transferred to a system by either a…

Hi I need help with parts of a thermo practice problem 2 kg of air in a piston cylinder initially at P1=101 kPa, T1= 300 K undergoes a cycle made up of three processes: 1-2 Isothermal compression until the volume is (1/15) of its original value.2-3 Constant Pressure heating3-1 Isentropic Expansion back to the initial state Assume air is an ideal gas with constant specific heats with the following values: Cpo=1.027kJ/kgK; Cvo= 0.740 kJ/kgK; R=0.287 kJ/kgK; ɣ=1.388 Fill in the processes table below and show all work.

Here is the question   Air enters the compressor ofthe cycle at 1 bar and 25 °C. Pressure after compression is 3 bar.Temperature at turbine inlet is 650 °C    please specify these two parts answer too -    a) heat rejected in the cooler ( is it Wc ?? )    b ) temprature of air leaving the solution ( is it T4 ?? )    I have already the solution please just highlight these two Answers

104#1.    an ideal gas with R=0.062 BTU/lbm-degree R and Cv=0.158 BTU/lbm-degree R undergoes athree process cycle in a cklose system. from the initial state of 20 psia and 570degree R, the gas is compressed at coinstant pressure to 1/5 of its initial volume, process 1-2; it is then heated isochrocally to state 3, process 2-3; and finally, it expands polytopically with index n=1.5 back to its initial state, process 3-1. determine the pressure, specific volumes and temperatures at cardinal points around the cycle and the cycle thermal efficiency.