How to create an integral function? Trying to solve Cp_b between 2 numbers

%%Calculate Benzene Duty Q

%From Perry's table 2-153 values for Benzene

C1_b = 162940; %in J/kmol*K

C2_b = -344.94; %in J/kmol*K^2

C3_b = 0.85562; %in J/kmol*K^3

funcCp_b = @(T) (C1_b) + (C2_b*T) + (C3_b*T^2);

Cp_b = int(funcCp_b,T, 379.25, 286.15)

Answer 1

[madhan ravi]

clear all
%%Calculate Benzene Duty Q
%From Perry's table 2-153 values for Benzene 
C1_b = 162940; %in J/kmol*K
C2_b = -344.94; %in J/kmol*K^2
C3_b = 0.85562; %in J/kmol*K^3
  funcCp_b = @(T) (C1_b) + (C2_b*T) + (C3_b*T.^2);
  Cp_b = integral(funcCp_b, 379.25, 286.15)

[Skye Cameron]

displays this error when i tried your code;

Error: File: HeatExchangerDesignEX3503.m Line: 19 Column: 60

Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='.

[Skye Cameron]

I have this at the end, i do not understand why this isnt working also? Trying to solve for T2

syms T2

TempCumene = vpasolve ((((281.4749/3600)*Cp_b)*(T2-414.95) = Q_b),T2) %temp for cumene outlet in K

[madhan ravi]

The answer I get is

Cp_b = -1.3360e+07

[madhan ravi]

As the error message says use == Q_b