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Diffstat (limited to '3878/CH21/EX21.3/Ex21_3.sce')
-rw-r--r-- | 3878/CH21/EX21.3/Ex21_3.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3878/CH21/EX21.3/Ex21_3.sce b/3878/CH21/EX21.3/Ex21_3.sce new file mode 100644 index 000000000..af36e332b --- /dev/null +++ b/3878/CH21/EX21.3/Ex21_3.sce @@ -0,0 +1,24 @@ +clear +// Variable declaration +T_ra=21// The temperature of the returning air +H=50// % saturation +T_d=28// The dry bulb temperature in °C +T_w=20// The wet bulb temperature in °C +m_a=20// The mass flow rate of returning air in kg/s +m_b=3// The mass flow rate of outside air in kg/s +x_ra=0.0079// The moisture content in kg/kg +x_oa=0.0111// The moisture content in kg/kg +h_a=41.8// The enthalpy in kJ/kg +h_b=56.6// The enthalpy in kJ/kg + +// Calculation +// Method (b) +t_c=((T_ra*m_a)+(T_d*m_b))/(m_a+m_b)// °C +g_c=((x_ra*m_a)+(x_oa*m_b))/(m_a+m_b)// kg/kg +h_c=((h_a*m_a)+(h_a*m_b))/(m_a+m_b)// kJ/kg dry air +printf("\n \nThe condition of the mixture,t_c=%2.1f°C",t_c) + +printf("\n \n g_c=%0.4f kg/kg",g_c) + +printf("\n \n h_c=%2.1f kJ/kg dry air",h_c) + |