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 :
| Test section |
Horizontal, externally heated |
| Diameter |
28 mm (approx.) |
| Length |
400 mm (approx.) |
| Blower |
FHP of Standard make. |
| Heater |
Nichrome Wire. |
| Heating Control |
Special arrangement to control heat input |
| Air Flow Measurement |
Orificemeter with differential pressure transmitter |
| Control panel comprising of |
| Digital Voltmeter |
0-300 Volt. |
| Digital Ammeter |
0-2 Amp. |
| Variac |
0-230 V, 2 Amp |
| Temperature Measurement |
Temperature transmitter, Output 4-20 mA -6Nos. |
| With standard make on/off switch, Mains Indicator etc. |
| An ENGLISH instruction manual consisting of experimental procedures, block diagram etc. will be provided along with the Apparatus |
| The whole set-up is well designed and arranged on a rigid structure painted with industrial PU Paint. |
Ordering Details:
Catalogue No
|
Description
|
JIHT-1051
|
COMPUTER CONTROLLED - HEAT TRANSFER IN FORCED
CONVECTION (With Data Logging Facility)
|
