The device consists of a channel in which both forced and natural convection are tested on the pin fin. The channel is linked to the blower's suction. Only forced convection is used to operate the blower so that it touches the pin fin. The window above the pin fin is maintained open to the atmosphere during natural convection. Along the length of the fin, there are five thermocouple tapings provided. Thus, the distribution of temperature along the length may be identified. It is possible to determine the co-efficient, efficiency, etc. of natural and forced heat transfer.

Specifications:

• Three pin fins-

  a) M. S.

  b) Brass

  c) Al

• Channel- 150mm x 100mm x 1000mm
• Blower – run by f.h.p. motor.
• Orifice meter along with water manometer to measure airflow.
• Voltmeter and ammeter to measure power input.
• Cr- Al thermocouple with 6 tapings along with temperature indicator.
• Dimmerstat to control power input.
• A band heater to heat the pin fin.

 A technical manual accompanies the unit.

Services required:

• 220v, stabilized single phase supply along with earthing Connection.
• Floor area 2m x 1m x 1m height