## Question 1(c) ## Autograded Answer import numpy as np ## Question 1(c) ####### def calc_error (T): #Your code here # Data from steam table T = 220 # temperature in degrees Celsius Psat 373.7 # saturation pressure in kPa vg_data= 0.00368 # specific volume in m^3/kg # Constants R = 461.5 # J/kg-K, specific gas constant for steam Tcrit = 647.3 #K, critical temperature of steam # Coefficients for Affandi equation a = -7.20694 b=1.44318 c = -1.01348 d = 0.18748 e = -0.01650 ## Write code here to print out values of error for each temperature in csv table # Function to calculate saturation pressure def saturation_pressure (T): # Constants for Antoine equation for vapor pressure of water A 8.07131 B 1730.63 C = 233.426 = #Vapor pressure in kPa P= np.exp(A - B / (T + C)) P = 1000 # convert kPa to Pa return P # Function to calculate specific volume using ideal gas equation def specific_volume_ideal_gas (T): P = saturation_pressure (T) #saturation pressure in Pa Tsat = T + 273.15 # saturation temperature in K vg = = R + Tsat / P # specific volume in m^3/kg return vg # Function to calculate specific volume using Affandi equation def specific_volume_Affandi (T): Tr= T / Tcrit # reduced saturation temperature 1n_vg = a + b (np.log(1/ Tr))** 0.4+ c/ Tr* 2 + d / Tr** 4+e / Tr 5 vg = np.exp(1n_vg) # specific volume in m^3/kg return vg # Calculate specific volumes and percentage error vg_ideal_gas = specific_volume_ideal_gas (T) vg_Affandi = specific_volume_Affandi (T) error_ideal_gas = 100 abs (vg_data - vg_ideal_gas) / vg_data error_Affandi = 100 abs (vg_data - vg_Affandi) / vg_data #Print results
## Question 1(c) ## Autograded Answer import numpy as np ## Question 1(c) ####### def calc_error (T): #Your code here # Data from steam table T = 220 # temperature in degrees Celsius Psat 373.7 # saturation pressure in kPa vg_data= 0.00368 # specific volume in m^3/kg # Constants R = 461.5 # J/kg-K, specific gas constant for steam Tcrit = 647.3 #K, critical temperature of steam # Coefficients for Affandi equation a = -7.20694 b=1.44318 c = -1.01348 d = 0.18748 e = -0.01650 ## Write code here to print out values of error for each temperature in csv table # Function to calculate saturation pressure def saturation_pressure (T): # Constants for Antoine equation for vapor pressure of water A 8.07131 B 1730.63 C = 233.426 = #Vapor pressure in kPa P= np.exp(A - B / (T + C)) P = 1000 # convert kPa to Pa return P # Function to calculate specific volume using ideal gas equation def specific_volume_ideal_gas (T): P = saturation_pressure (T) #saturation pressure in Pa Tsat = T + 273.15 # saturation temperature in K vg = = R + Tsat / P # specific volume in m^3/kg return vg # Function to calculate specific volume using Affandi equation def specific_volume_Affandi (T): Tr= T / Tcrit # reduced saturation temperature 1n_vg = a + b (np.log(1/ Tr))** 0.4+ c/ Tr* 2 + d / Tr** 4+e / Tr 5 vg = np.exp(1n_vg) # specific volume in m^3/kg return vg # Calculate specific volumes and percentage error vg_ideal_gas = specific_volume_ideal_gas (T) vg_Affandi = specific_volume_Affandi (T) error_ideal_gas = 100 abs (vg_data - vg_ideal_gas) / vg_data error_Affandi = 100 abs (vg_data - vg_Affandi) / vg_data #Print results
Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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How can I get the final answer?
![7]: ## Question 1(c)
## Autograded Answer
import numpy as np
## Question 1(c) ######
def calc_error (T):
# Your code here
# Data from steam table
T= 220 #temperature in degrees Celsius
Psat = 373.7 #saturation pressure in kPa
vg_data= 0.00368 # specific volume in m^3/kg
# Constants
R = 461.5 # J/kg-K, specific gas constant for steam
Tcrit 647.3 #K, critical temperature of steam
# Coefficients for Affandi equation
a = -7.20694
b=1.44318
c = -1.01348
d = 0.18748
e-0.01650
## Write code here to print out values of error for each temperature in csv table
#Function to calculate saturation pressure
def saturation_pressure (T):
# Constants for Antoine equation for vapor pressure of water
A 8.07131
B 1730.63
C = 233.426
#Vapor pressure in kPa
Pnp.exp(A - B / (T + C))
P *= 1000 #convert kPa to Pa
return P
#Function to calculate specific volume using ideal gas equation
def specific_volume_ideal_gas (T):
P = saturation_pressure (T) # saturation pressure in Pa
Tsat T + 273.15 #saturation temperature in K
vg RTsat / P # specific volume in m^3/kg
return vg
#Function to calculate specific volume using Affandi equation
def specific_volume_Affandi (T):
Tr= T / Tcrit # reduced saturation temperature
1n_vg = a + b
**
(np.log (1 / Tr))** 0.4+ c/ Tr** 2 + d / Tr** 4+ e / Tr 5
np.exp(1n_vg) # specific volume in m^3/kg
vg =
return vg
# Calculate specific volumes and percentage error
vg_ideal_gas = specific_volume_ideal_gas (T)
vg_Affandi specific_volume_Affandi (T)
=
error_ideal_gas= 100 abs (vg_data - vg_ideal_gas) / vg_data
error_Affandi = 100 abs (vg_data - vg_Affandi) / vg_data
#Print results](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F226fee03-c629-4185-8cef-0e29840a7a8d%2F67e4c0e9-339d-4f46-b261-6ffdedffa53a%2Fn780krb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7]: ## Question 1(c)
## Autograded Answer
import numpy as np
## Question 1(c) ######
def calc_error (T):
# Your code here
# Data from steam table
T= 220 #temperature in degrees Celsius
Psat = 373.7 #saturation pressure in kPa
vg_data= 0.00368 # specific volume in m^3/kg
# Constants
R = 461.5 # J/kg-K, specific gas constant for steam
Tcrit 647.3 #K, critical temperature of steam
# Coefficients for Affandi equation
a = -7.20694
b=1.44318
c = -1.01348
d = 0.18748
e-0.01650
## Write code here to print out values of error for each temperature in csv table
#Function to calculate saturation pressure
def saturation_pressure (T):
# Constants for Antoine equation for vapor pressure of water
A 8.07131
B 1730.63
C = 233.426
#Vapor pressure in kPa
Pnp.exp(A - B / (T + C))
P *= 1000 #convert kPa to Pa
return P
#Function to calculate specific volume using ideal gas equation
def specific_volume_ideal_gas (T):
P = saturation_pressure (T) # saturation pressure in Pa
Tsat T + 273.15 #saturation temperature in K
vg RTsat / P # specific volume in m^3/kg
return vg
#Function to calculate specific volume using Affandi equation
def specific_volume_Affandi (T):
Tr= T / Tcrit # reduced saturation temperature
1n_vg = a + b
**
(np.log (1 / Tr))** 0.4+ c/ Tr** 2 + d / Tr** 4+ e / Tr 5
np.exp(1n_vg) # specific volume in m^3/kg
vg =
return vg
# Calculate specific volumes and percentage error
vg_ideal_gas = specific_volume_ideal_gas (T)
vg_Affandi specific_volume_Affandi (T)
=
error_ideal_gas= 100 abs (vg_data - vg_ideal_gas) / vg_data
error_Affandi = 100 abs (vg_data - vg_Affandi) / vg_data
#Print results
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