Natural convection and Radiation apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-EE-12182
Quick Answer: The Natural Convection and Radiation apparatus is a heat transfer setup with a vertical brass tube fitted in a rectangular duct that is open at the top and bottom, heated by an electric element, for studying heat loss from the tube to the surrounding air by natural convection.
Last updated: October 2026
Key Features
- Vertical brass tube fitted in a rectangular duct
- Duct open at the top and bottom, forming an enclosure with undisturbed surroundings
- Transparent acrylic window on one side of the duct for visualisation
- Electric heating element inside the vertical tube heats the tube surface
- Tube temperature read by temperature sensors on a digital temperature indicator with multichannel switch
- Heat input read on a digital ammeter and digital voltmeter and varied by a variac
Technical Specifications
| Specification | Value |
|---|---|
| Test section | Vertical brass tube in a rectangular duct |
| Duct | Open at the top and bottom |
| Visualisation | Transparent acrylic window on one side |
| Heating | Electric heating element in the tube |
| Temperature measurement | Temperature sensors with digital temperature indicator and multichannel switch |
| Power measurement | Digital ammeter and digital voltmeter |
| Power control | Variac |
| Surface finish | Polished tube surface to minimise radiation losses |
About This Product
Natural convection happens when air next to a heated surface warms, becomes lighter and rises, drawing cooler air in behind it. A heated vertical tube in a duct is a standard way to study this in heat transfer classes. Students vary the heat input with the variac, read the tube temperatures and the electrical input, and compare them to see how readily the tube loses heat to the air. The polished surface keeps radiation losses low, so most of the heat loss is by convection.
Frequently Asked Questions
Q1. How is the tube heated in the Natural Convection and Radiation apparatus?
An electric heating element is kept in the vertical tube and heats the tube surface. The heat input is varied by a variac.
Q2. How are the temperature and heat input measured?
Temperature sensors feed a digital temperature indicator with a multichannel switch, and the heat input is read on a digital ammeter and a digital voltmeter.
Q3. What does the duct do?
The duct is open at the top and bottom and forms an enclosure that gives the tube an undisturbed surrounding.
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For a quotation on the Natural Convection and Radiation Apparatus, contact School Lab Equipment India.