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Problem 7.47 Adiabatic Steam Blender Superheated steam at Ti(°C) and 20.0 bar is combined with saturated...
1. a) Superheated steam at T1 (°C) and corresponding specific enthalpy H^1 and 10.0 bar pressure...
1. a) Superheated steam at T1 (°C) and corresponding specific enthalpy H^1 and 10.0 bar pressure is combined with saturated steam at T2 (°C) and 7.0 bar pressure in a ratio 1.96kg of steam at 10.0 bar / 1.0 kg steam at 7.0 bar. The product stream is at 250°C and 7.0 bar. The process operates at steady state. What is the specific enthalpy H^1 associated with stream 1 assuming that the blender operates adiabatically? b) You have calculated the...
Chemical Engineering Question 100 KW of energy from a stream of superheated steam@ 200kg/sec, 10 bar...
Chemical Engineering Question
100 KW of energy from a stream of superheated steam@ 200kg/sec, 10 bar and 2100 C is used in a heat exchanger to preheat a reactor feed. Determine the (a) enthalpy, (b) temperature and the phase of the resulting stream. 100 Kg/hr. of a saturated steam at 1 bar is mixed with superheated steam available at 4000C and 1 bar to produce superheated steam at 3000C and 1 bar. Calculate amount of superheated steam produced at 3000C...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (N N-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of s 60 mm and sr 84 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of T,-390 K may be assumed to be maintained as condensation occurs tudy ithin the tubes. (a)...
use steam tables from perrys Problem 3 Using the steam tables: a) Calculate Cp for superheated...
use steam tables from perrys
Problem 3 Using the steam tables: a) Calculate Cp for superheated steam at 200 bar and 450 C. Compare this value to Cp for superheated steam at 450 C and lower pressures. At what point does the assumption Cp Cpis become valid, so that the assumption (H2-HI) = Cpis(T2-TI) is ok to use (assume 5% error is acceptable)? b) Use your best estimate of Cpis for 450 C to estimate H for superheated steam at...
Problem 7.32 Heating Ethane with Steam Saturated steam at a gauge pressure of 3.00 bar is...
Problem 7.32 Heating Ethane with Steam Saturated steam at a gauge pressure of 3.00 bar is to be used to heat a stream of ethane. The ethane enters a heat exchanger at 16°C and 1.5 bar gauge pressure at a rate of 895 m3/min and is heated at constant pressure to 93°C. The steam condenses and leaves the exchanger as a liquid at 20.0°C. The specific enthalpy of ethane at the given pressure is 941 kJ/kg at 16°C and 1073...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchang...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at the same pressure at 40 C and 250 kPa and exits at Taking flow chart. Include both mass and volumes on your inlet and outlet streams. b. Calculate the specific enthalpy values for the inlet and outlet streams. c. Use an energy balance to calculate the required mass...
What are the specific enthalpy and specific volume of steam at 400.0°C and 80.0 bar? Number Number kJ/kg Î= 0 m²/kg Is...
What are the specific enthalpy and specific volume of steam at 400.0°C and 80.0 bar? Number Number kJ/kg Î= 0 m²/kg Is this steam superheated or saturated? O O saturated superheated If this steam is superheated, what is its degrees of superheat? If the steam is saturated, respond with "0". Number Estimate the temperature, specific enthalpy and specific volume of saturated steam at 5.25 bar. Number Number Number Tsar = 10 °C kJ/kg mº/kg If 18.0 m/min of steam at...
Consider a Rankine cycle operating between 1.013 bar and 100 bar with a maximum superheated steam...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
Problem 12.027 SI One kmol/sec of helium (He) at 25°C, 4 bar enters an insulated chamber...
Problem 12.027 SI One kmol/sec of helium (He) at 25°C, 4 bar enters an insulated chamber at steady state as shown in the figure below, where it mixes with nitrogen (N2) entering as a separate stream at 277°C, 4 bar. The mixture exits at 3.8 bar with the molar analysis 55% He, 45% N2. Kinetic and potential energy effects can be ignored. Не 298 K 1 4 bar T3, 3.8 bar N2 550 K 4 bar Step 1 Determine the...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in stream 1 enters the turbine at 600 °C, 50 bar with mass flow rate kg/s and exits at 7 bar, 350 °C. Stream 3, which is saturated liquid and is throttled to 2 bar (stream 4). Stream 5 is at 200°C, 2 bar, and is mixed adiabatically with stream 4 in the tank. Stream 6 is wet steam that contains 8% liquid. This stream...
Chemical Engineering Question
100 KW of energy from a stream of superheated steam@ 200kg/sec, 10 bar and 2100 C is used in a heat exchanger to preheat a reactor feed. Determine the (a) enthalpy, (b) temperature and the phase of the resulting stream. 100 Kg/hr. of a saturated steam at 1 bar is mixed with superheated steam available at 4000C and 1 bar to produce superheated steam at 3000C and 1 bar. Calculate amount of superheated steam produced at 3000C...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (N N-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of s 60 mm and sr 84 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of T,-390 K may be assumed to be maintained as condensation occurs tudy ithin the tubes. (a)...
use steam tables from perrys
Problem 3 Using the steam tables: a) Calculate Cp for superheated steam at 200 bar and 450 C. Compare this value to Cp for superheated steam at 450 C and lower pressures. At what point does the assumption Cp Cpis become valid, so that the assumption (H2-HI) = Cpis(T2-TI) is ok to use (assume 5% error is acceptable)? b) Use your best estimate of Cpis for 450 C to estimate H for superheated steam at...
Problem 7.32 Heating Ethane with Steam Saturated steam at a gauge pressure of 3.00 bar is to be used to heat a stream of ethane. The ethane enters a heat exchanger at 16°C and 1.5 bar gauge pressure at a rate of 895 m3/min and is heated at constant pressure to 93°C. The steam condenses and leaves the exchanger as a liquid at 20.0°C. The specific enthalpy of ethane at the given pressure is 941 kJ/kg at 16°C and 1073...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at the same pressure at 40 C and 250 kPa and exits at Taking flow chart. Include both mass and volumes on your inlet and outlet streams. b. Calculate the specific enthalpy values for the inlet and outlet streams. c. Use an energy balance to calculate the required mass...
What are the specific enthalpy and specific volume of steam at 400.0°C and 80.0 bar? Number Number kJ/kg Î= 0 m²/kg Is this steam superheated or saturated? O O saturated superheated If this steam is superheated, what is its degrees of superheat? If the steam is saturated, respond with "0". Number Estimate the temperature, specific enthalpy and specific volume of saturated steam at 5.25 bar. Number Number Number Tsar = 10 °C kJ/kg mº/kg If 18.0 m/min of steam at...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
Problem 12.027 SI One kmol/sec of helium (He) at 25°C, 4 bar enters an insulated chamber at steady state as shown in the figure below, where it mixes with nitrogen (N2) entering as a separate stream at 277°C, 4 bar. The mixture exits at 3.8 bar with the molar analysis 55% He, 45% N2. Kinetic and potential energy effects can be ignored. Не 298 K 1 4 bar T3, 3.8 bar N2 550 K 4 bar Step 1 Determine the...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in stream 1 enters the turbine at 600 °C, 50 bar with mass flow rate kg/s and exits at 7 bar, 350 °C. Stream 3, which is saturated liquid and is throttled to 2 bar (stream 4). Stream 5 is at 200°C, 2 bar, and is mixed adiabatically with stream 4 in the tank. Stream 6 is wet steam that contains 8% liquid. This stream...
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