TEAM II Cooling Tower Analysis By: Cortez Rankin & D. Caruthers

Objectives Components of Cooling Tower Air Outlet Velocities and Flow Rates Air Inlet Velocities and Flow Rates Water Inlet and Outlet Data Comparison of Different Water Inlet Flow Rates

Water Cooling Tower

Balances Assuming Steady State Operation [IN = OUT] Overall Mass Balance M AO + M WO = M AI + M WI Overall Energy Balance h AO M AO + h WO M WO = h AI M AI + h WI M WI AO=Air Outlet AI=Air Inlet WO=Water OutletWI=Water Inlet

Portable Cooling Tower

Air Inlet

Air Outlet and Water Inlet

Psychrometric Chart

Air Inlet Data for Water Inlet Flow Rate = 5.1 (l/min) Velocity = 12.2 m/s Wet Bulb Temp. = 18 °C Dry Bulb Temp. = 25.5 °C Area = m 2 Relative Humidity = 48% Volumetric Flow Rate= m 3 /s

Air Inlet Data for Water Inlet Flow Rate = 10.1 (l/min) Velocity = 12.0 m/s Wet Bulb Temp. = 17 °C Dry Bulb Temp. = 25 °C Area = m 2 Relative Humidity = 45% Volumetric Flow Rate= m 3 /s

Air Inlet Data for Water Inlet Flow Rate = 40.3 (l/min) Velocity = 8.0 m/s Wet Bulb Temp. = 19 °C Dry Bulb Temp. = 27.5 °C Area = m 2 Relative Humidity = 45% Volumetric Flow Rate= m 3 /s

Outlet Velocity as a Function of Radius for Water Inlet Flow Rate = 5.1 (l/min)

Outlet Velocity as a Function of Radius for Water Inlet Flow Rate = 10.1 (l/min)

Outlet Velocity as a Function of Radius for Water Inlet Flow Rate = 40.3 (l/min)

Calculate Outlet Air Velocity

Formulas Volumetric Flow Rate = (Area)(Velocity) Mass Flow Rate = (Density)(Volumetric Flow Rate)

Outlet Air for Water Inlet Flow Rate = 5.1 (l/min ) Area = m 2 Volumetric Flow Rate= 1.7 m 3 /s Temp. Dry Bulb= 21 °C= Wet Bulb Temp. Enthalpy = 79 kJ/kg Dry Air

Outlet Air for Water Inlet Flow Rate = 10.1 (l/min ) Area = m 2 Volumetric Flow Rate= 1.6 m 3 /s Temp. Dry Bulb= 23 °C= Wet Bulb Temp. Enthalpy = 86 kJ/kg Dry Air

Outlet Air for Water Inlet Flow Rate = 40.3 (l/min ) Area = m 2 Volumetric Flow Rate= 1.0 m 3 /s Temp. Dry Bulb= 31°C= Wet Bulb Temp. Enthalpy = 123 kJ/kg Dry Air

Water Data for Water Inlet Flow Rate = 5.1 (l/min ) Inlet Temp.= 52.5 o C Outlet Temp.= 27.7 o C Temp. Change= 24.8 o C Mass Flow Rate= kg/s Tons of Cooling= 2.5

Water Data for Water Inlet Flow Rate = 10.1 (l/min ) Inlet Temp.= 56.3 o C Outlet Temp.= 31 o C Temp. Change= 25.3 o C Mass Flow Rate= kg/s Tons of Cooling= 5.1

Water Data for Water Inlet Flow Rate = 40.3 (l/min ) Inlet Temp.= 52 o C Outlet Temp.= 30.4 o C Temp. Change= 21.6 o C Mass Flow Rate= kg/s Tons of Cooling= 17

Admin Tower Schematic

Admin Cooling Tower Front (West) Inlet Dry Bulb Temp = 18 o C Wet Bulb Temp = 12 o C Area = 4.6 m 2 Air Speed = 1.4 m/s Volumetric Flow rate = 6.1 m 3 /s Density of Area = 1.2 kg/m 3 Mass flow rate = 7.3 kg/s

Admin Cooling Tower Front (West) Inlet Team 3 Dry Bulb Temp = 33 o C Wet Bulb Temp = 24.5 o C Area = 4.6 m 2 Air Speed = 1.6 m/s Volumetric flow rate = 7.6 m 3 /s Density of Area = 1.1 kg/m 3 Mass flow rate = 8.3 kg/s