diff options
Diffstat (limited to '3878/CH21')
| -rw-r--r-- | 3878/CH21/EX21.5/Ex21_5.sce | 15 | ||||
| -rw-r--r-- | 3878/CH21/EX21.7/Ex21_7.sce | 14 |
2 files changed, 29 insertions, 0 deletions
diff --git a/3878/CH21/EX21.5/Ex21_5.sce b/3878/CH21/EX21.5/Ex21_5.sce new file mode 100644 index 000000000..c0683f5c9 --- /dev/null +++ b/3878/CH21/EX21.5/Ex21_5.sce @@ -0,0 +1,15 @@ +clear +// Variable declaration +T_s=100// The temperature of steam in °C +T_d=21// The dry bulb temperature in °C +H=50// % saturation +x_ab=0.0079// Moisture content of air before in kg/kg +x_a=0.0067// Moisture added in kg/kg +C_ps=1.972// The specific heat capacity of the steam in kJ/kg°C +C_pa=1.006// The specific heat capacity of air in kJ/kg.K + +// Calculation +x=x_ab+x_a// Final moisture content in kg/kg +t=((x_a*C_ps*T_s)+(C_pa*T_d))/(((x_a*C_ps)+(C_pa)))// The final dry bulb temperature in °C +printf("\n \nFinal moisture content=%0.4f kg/kg \nThe final dry bulb temperature,t=%2.2f°C",x,t) + diff --git a/3878/CH21/EX21.7/Ex21_7.sce b/3878/CH21/EX21.7/Ex21_7.sce new file mode 100644 index 000000000..bb63f86f4 --- /dev/null +++ b/3878/CH21/EX21.7/Ex21_7.sce @@ -0,0 +1,14 @@ +clear +// Variable declaration +m_w=4// The mass of water in kg +m_a=1// The mass of air in kg +h_ab=45.79// Enthalpy of air before in kJ/kg +h_aa=26.7// Enthalpy of air after in kJ/kg +C_pw=4.187// The specific heat capacity of water in kJ/kg.K + +// Calculation +Q_l=h_ab-h_aa// Heat lost per kilogram air in kJ +Q_g=Q_l/m_w// Heat gain per kilogram water in kJ +dT=Q_g/C_pw// Temperature rise of water in K +printf("\n Temperature rise of water=%1.0f K",dT) + |