Description

Shell and Tube Heat Exchanger are popular in process industries because they occupy less space and offer reasonable temperature drop. The apparatus consists of fabricated shell, inside which tubes with baffles on outer side are fitted. The present set up is a 1-2 heat exchangers, with cold water flows through shell. Valves are provided to control the flow rates of hot and cold water. Flow rates of hot and cold water are measured using Rotameters. A magnetic drive pump is used to circulate the hot water from a re-cycled type water tank, which is fitted with heaters and Digital Temperature Controller.

Learning Objectives/Experiments:

• • • To study the following at various flow rates
    • LMTD
    • Heat transfer rate
    • Overall Heat Transfer Co-efficient

Technical Specifications:

• • • System: Water to Water. (1–2 shell tube type)
    • Shell: Material Stainless steel. Insulated with ceramic wool and cladded with aluminum foil. Dia. 220 mm, Length 500 mm (Approx.)
    • 25% cut baffles at 100 mm distance 4 Nos
    • Tube: OD 16mm approx., Length 500mm (24 Nos.)
    • Water Flow Measurement: Rotameters (2Nos.) one each for cold hot fluid
    • Hot Water Tank: Made of Stainless steel Insulated with ceramic fibre wool
    • Hot Water Circulation: Magnetic Pump
    • Heaters: Nichrome wire heater (2 Nos.)
    • The whole set-up is ingeniously designed and schematically arranged on a powder-coated rigid structure

Control Panel:

• • • Digital Temp. Controller : 0-199.9°C, (For Hot Water Tank)
    • Digital Temp. Indicator: 0-199.9°C, with multi-channel switch
    • Temperature Sensors: RTD PT-100 type.
    • Standard make On/Off switch, Mains Indicator etc.