Helical coils are used for heating or cooling in process tanks. When a fluid flow through a curved tube, centrifugal force acting upon the various elements of fluid moving with different velocities causes secondary circulation. Secondary flow results in higher heat transfer characteristics. Further secondary flow stabilizes the laminar flow leading of a higher critical Reynolds number for transition from laminar to turbulent flow.

SCOPE OF EXPERIMENTATIONS:

• To determine the critical Reynolds number of a fluid flowing through the coil.

• To determine the friction factor for flow of water through helical coil.

• To compare Pressure drop in helical coil with that in a straight pipe of same length, inside diameter and surface roughness.

UTILITIES REQUIRED:

• Electricity

  • 500 watts, 220 V, 1 Phase.

• Floor Area

  • 1 m x 2 m.

TECHNICAL DETAILS:

• Helical Coil

  • Material Stainless Steel Dia – 12”

• No. of Turns

  • 15

• Coil Tube Dia

  • OD 21mm, ID 17mm (Approx.)

• Sump Tank

  • Material Stainless Steel/PVC, Capacity 50 Ltrs.

• Water Circulation

  • FHP Pump, Crompton/Sharp make.

• Manometer

  • 2 Nos.

• Flow measurement

  • Rotameter.

• Piping

  • GI and PVC

• Control panel comprising of Standard make on off switch, Mains Indicator etc.

• The whole set-up is well designed and arranged in a good quality painted structure.