Figure PZ55 and the accompanying table provide the schematic and steady-state operating data for a flash7.55chamber fitted with an inlet valve that produces saturated vapor and saturated liquid streams from a single entering streamof liquid water. Stray heat transfer and the effects of motion and gravity are negligible. Determine (a) the mass flow rate, inIb/s, for each of the streams exiting the flash chamber and (b) the total rate of exergy destruction, in Btu/s. Let To = 77°F, Po=1 atmState Condition T(°F) p(lbf/in.°) h(Btu/lb) s(Btu/lb R)liquid 30080269.710.43721.6996301164.32 sat. vapor3 sat. liquid218.90.3682302Saturated vaporP2=30 lbf/in.2Flash chamberValve=100 lb/sT 300°FP=80 lbf/in.2Saturated liquid,A+P3=30 lbf/in.23FIGURE P7.55

Answered: Figure PZ55 and the accompanying table…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Air as an ideal gas flows through the compressor and heat exchanger shown in the figure. A separate liquid stream also flows through the heat exchanger. The data given are for operation at steady state. Stray heat transfer to the surroundings can be neglected, as can all kinetic and potential energy changes. Determine the compressor power, in kW, and the mass flow rate of the cooling water, in kg/s.
Figure shows data for a portion of the ducting in ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 bar throughout. Assuming the ideal gas model for air with Cp = 1 kJ/kg · K. and ignoring kinetic and potential energy effects, determine: (a) the temperature of the air at the exit, in °C. (b) the exit diameter, in m. (c) the rate of entropy production within the duct, in kJ/min.
Oil enters a counterflow heat exchanger at 600 K with a mass flow rate of 10 kg/s and exits at 350 K. A separate stream of liquid water enters at 20°C, 5 bar. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The specific heat of the oil is constant, c = 2 kJ/kg · K. If the designer wants to ensure no water vapor is present in the exiting water stream, what is the minimum mass flow rate for the water, in kg/s?
Determine:(a) the total power for both compressors, in kW.(b) the mass flow rate of the water, in kg/s.
6.110 Figure P6.110 shows a simple vapor power plant operating at steady state with water as the working fluid. Data at key locations are given on the figure. The mass flow rate of the water circulating through the components is 109 kg/s. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine a. the net power developed, in MW. b. the thermal efficiency. c. the isentropic turbine efficiency. t2 d. the isentropic pump efficiency. e. the mass flow rate of the cooling water, in kg/s. f. the rates of entropy production, each in kW/K, for the turbine, condenser, and pump. P = 100 bar T = 520°C %3D Power out Turbine P2 = 0.08 bar 2 = 90% %3D Steam Cooling water in at 20°C generator Condenser Pa= 100 bar T= 43°C Cooling water out at 35°C 4. Pump 3 P3 0.08 bar Saturated liquid Power in FIGURE P6.110 2. www
Oil enters a counterflow heat exchanger at 525 K with a mass flow rate of 10 kg/s and exits at 350 K. A separate stream of liquid water enters at 20°C, 5 bar. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The specific heat of the oil is constant, c= 2 kJ/kg · K. If the designer wants to ensure no water vapor is present in the exiting water stream, what is the minimum mass flow rate for the water, in kg/s? mwater,min = i kg/s
use table Table Derive expressions for the heat absorbed by the system for each of the following classes of reversible processes for one mole of an idea gas: (a) Case 1: Isothermal change in pressure (b) Case 2: Isobaric change in volume Hint: Case 1 with S = S(T,P); Case 2 with S = S(P,V) (c) Case 3: Isochoric (constant volume) change in temperature dV=Va dT-VB AP dS=CT dT-Va dP dU= (Cp-PVα) dT + V(PB - Ta) dP dH=Cp dT +V(I-Ta) dP dF=-(S+PVa) dT + VPB dP dG=-S dT + V dP
For modeling a gas turbine power plant producing 10 MW of power, the ideal air-standard Brayton cycle operating at steady state is used. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. below. (a) Sketch the T–s diagram for the cycle and determine (b) the mass flow rate of air, in kg/s, (c) the rate of heat transfer, in kW, to the working fluid passing through the heat exchanger, (d) the thermal efficiency.
Handwritten answer needed.
I need help going through the process to solve this problem, I think I have a general idea, but want to make sure I am doing it correctly. A counterflow heat exchanger operates at steady state while being well-insulated from the surroundings with air and ammonia flowing in separate streams. Ammonia enters at state 1 with -30°C and a quality of 30% and exits at state 2 as saturated vapor at -30°C. Air enters at state 3 with pressure 1 bar and temperature 295 K and exits at state 4 with pressure 1 bar and temperature 265 K. The flow rate of air is 10 kg/s. Ignore kinetic and potential energy effects, and take the dead state as 1 bar and 300 K. a. Describe the heat transfer inside the heat exchanger (what is transferring heat to what?) b. Determine the specific enthalpy of each state, in kJ/kg. c. Determine the mass flow rate of ammonia, in kg/s. d. Determine the rate of exergy destruction within the heat exchanger, in kW.e. Devise and evaluate an exergetic efficiency for the heat…
The Figure shows a simple vapor power plant operating at steady state with water circulating through the components. Relevant data at key locations are given on the figure. The mass flow rate of the water is 90 kg/s. Kinetic and potential energy effects are negligible as are all stray heat transfers. Determine a. The heat added in boiler to the water b. If the combustion efficiency is 85%, find the mass of diesel fuel combustion rate in kg/day if CVDiesel =52 MJ/kg. c. The output turbine power in kW.
At steady state, air at 200 kPa, 325 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm². At the duct exit, the pressure of the air is 100 kPa and the velocity is 250 m/s. Neglecting potential energy effects and modeling air as an ideal gas with constant cp = 1.008 kJ/kg K, determine a. the velocity of the air at the inlet, in m/s. b. the temperature of the air at the exit, in K. c. the exit cross-sectional area, in cm².

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