DESCRIPTION:
Condensation is a phase change heat transfer process occurring in many industrial applications, such as in steam power plants, refrigeration plants etc. The condensation of vapour on a surface is of two types:
1. Drop wise Condensation,
2. Film wise Condensation.
This setup is designed for determining heat transfer co-efficient of two types of condensation and for visualization of these processes. It consists of a vertical frame. Condensation tubes are fitted inside compact glass cylinder. Steam generator is fitted at the backside of the cylinder. Steam comes directly from generator to the cylinder. Two valves are fitted to control flow rate of water in individual tubes. Digital Temperature Indicator monitors the temperatures. Pressure gauge and Rotameter can observe steam pressure and cold water flow rates respectively. A Digital temperature Controller is provided for controlling the temperature of Steam. Water level indicator is provided in steam generator. Condensate is measured by a measuring cylinder.
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 study the Film wise & Drop wise condensation of steam on a vertical surface.
- Visualization of condensation process in drop wise as well as film wise condition.
UTILITIES REQUIRED:
- Water supply 5 lit/min (approx.)
- Electricity Supply : 1 Phase, 220 V AC, 1.5 kW.
- Table for set-up support.
- 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:
| Copper tubes (2 Nos.) |
One with natural finish and other nickel polished. Dia: 19 mm (Approx.), Length: 170 mm (Approx.) |
| Steam Generator |
8 Ltrs. (Approx.) made of Stainless steel with 1.5 kW heater. Insulated with ceramic wool and cladded by aluminum foil. |
| Pressure Gauge |
Bourdon type. |
| Water Flow measurement |
By flow sensor |
| Condensate Measurement |
By level sensor |
| Control valves |
One each for Steam, Cooling water & Drain. |
| Control panel comprising of |
| Temp. Controller |
PID Controller, 0- 199.9° C (For Steam Generator) |
| Temperature Measurement |
By 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-541
|
DROPWISE & FILMWISE CONDENSATION APPARATUS
(With Data Logging Facility)
|
