The set up consists of a glass column. Water is fed at the top of the column along the walls to make the column a wetted wall column. Hot air from heating chamber is allowed to pass through the column vertically upward and evaporation in the liquid film around the wall takes place. The flow rates of water and air can be independently varied to simulate different conditions. Instrumentation is done to measure the dry and wet bulb temperatures at air inlet and outlet.
EXPERIMENTS
To determine the gas film coefficient in a wetted wall column using air water system.
To find the mass transfer coefficient
UTILITIES REQUIRED
Compressed Air Supply at 2 Bar, 4 CFM
Water supply & Drain
Electricity Supply: 1 Phase, 220 V AC, 0.5 kW.
TECHNICAL SPECIFICATIONS
Product & Code
Humidification & De- Humidification Apparatus and MT 28
Column
Borosilicate Glass Dia 45 mm, Length 500mm (approx.) (2 Nos.)
Packing
Rushing Ring & Silica Gel
Water Circulation
FHP Pump.
Water Tank
Material Stainless Steel, Capacity 15 Ltrs.
Heating Chamber
Compatible capacity
Heater
Nichrome wire heater
Rotameter
For Air & Water flow rate measurement
Dry & wet Bulb Temp.
With Digital Temperature Indicator.
Temperature Sensors
RTD PT-100 Type.
Control panel
Digital Temp. Indicator 0-199.9°C, RTD PT-100 type with multi-channel switch. On/off switch, Mains Indicator etc
The whole set-up is well designed and arranged in a good quality painted structure.
