DESCRIPTION:

The apparatus consists of blower unit fitted with the test pipe. Nichrome wire heater surrounds the test section. Four Temperature Sensors are embedded on the test section, two placed in the air stream at the entrance and exit of the test section to measure the inlet and outlet air temperature.

Test pipe is connected to the delivery side of the blower along with the orifice to measure flow of air through the pipe. Constant heat flux is given to pipe by an electric heater through a variac and measured by Digital Voltmeter and Digital Ammeter.

The present set-up has a facility to interface the system with computer which enables to log the experimental data using computer. The educational software and data-logging package has been developed for unit. The software environment base is of Lab view of NATIONAL INSTRUMENTS, USA. This software is compatible to interfacing unit designed by “Lab Smith”. This software package provides a comprehensive educational software environment within which the investigations can be performed. This software is capable to tabulate the sample readings according to the requirement of experiment under study and results obtained can be compared. The real time data acquisition can be done by interfacing the set-up with computer using software. Software allows the user to have control on data logging, printing the stored data, preparing spread sheets in Excel etc.

EXPERIMENTATION:

• To determine average surface heat transfer coefficient for a pipe by forced convection.
• Comparison of heat transfer coefficient for different airflow rates and heat flow rates.
• To plot surface temperature distribution along the length of pipe.

UTILITIES REQUIRED :

• Electricity Supply: 1 Phase, 220 V AC, 10 Amp.
• Floor area of 1.2 m x 0.5 m.
• Computer System: Pentium IV with DVD Drive, Windows 7, MS-Office pre-loaded. One USB slot required in PC for DATA ACQUISITION CARD.

TECHNICAL DETAILS :

Ordering Details:

JIHT-551

HEAT TRANSFER IN FORCED CONVECTION 

(With Data Logging Facility)