APPARATUS

The apparatus consists of a channel in which the pin fin is tested in both natural as well as

forced convection. The channel is  connected to  the  suction of blower. The blower  is

operated to touch the pin fin in forced convection only. In natural convection, the window

above the pin fin is kept open to the atmosphere. Five thermocouple tapings are given

along the length of the fin. Thus the temperature distribution along the length can be

distinguished. Also natural and forced heat transfer co-efficient, effectiveness, etc.

SPECIFICATIONS:

1.  Three pin fins-    a) M. S.    b) Brass       c) Al

2.  Channel- 150mm x 100mm x 1000mm

3.  Blower - run by f.h.p. motor.

4.  Orifice meter along with water manometer to measure airflow.

5.  Voltmeter and ammeter to measure power input & Dimmerstat 2A

6.  Cr- Al thermocouple with 6 tapings along with temperature indicator.

7.  A band heater to heat the pin fin. A technical manual accompanies the unit.