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Extended Surface Heat Transfer
Extended Surface Heat Transfer (Product Code: SLE/EA/24) is a fin experiment used to study how heat conducts along a thin solid bar and escapes to the surroundings by natural convection and radiation in engineering laboratories. The bar is heated at one end, has a matt black coating for a predictable emissivity, and carries thermocouples at equally spaced intervals along its surface. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer of lab equipment for technical institutes, at its own factory in Ambala, India.
Key Details
| Parameter | Detail |
|---|---|
| Test piece | Thin solid bar with an electric heater at one end |
| Surface finish | Matt black coating for a consistent and predictable emissivity value |
| Temperature measurement | Thermocouples along the bar surface at equally spaced intervals |
| Heat transfer modes | Conduction along the bar; loss to the local surroundings by natural convection and radiation |
| Mounting | Base plate with a clear schematic of the experiment layout |
| Connections | Heater and thermocouples connect to sockets on the Heat Transfer Experiments Base Unit |
| Learning approach | Initial test results are used to predict temperatures and heat flow along the bar |
| Product code | SLE/EA/24 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Extended Surface Heat Transfer Apparatus Used For?
Fins on engine cylinders and heat sinks on electronics work on the same principle as this bar. Students connect the heater and thermocouples to the base unit, let the bar reach a steady state and record the temperature at each point, then plot the temperature profile along its length and compare it with fin theory, including fin efficiency.
Because the matt black coating gives a known emissivity, the radiation share of the heat loss can be calculated and separated from natural convection. Students then use their first results to predict temperatures and heat flow for a new condition and test the prediction, which makes it dependable lab equipment for college heat transfer courses in India.
What to Specify When Ordering
- Whether you need the Heat Transfer Experiments Base Unit, since the heater and thermocouples plug into its sockets.
- Which other experiments from the same base-unit range you want to add.
- The number of experiment sets required for your laboratory.
OEM Manufacturer
Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597) trades as ScienceLab and is the OEM (original equipment manufacturer) of this extended surface experiment. It is produced at the company's licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala, Haryana, which operates under Factory Licence AMB-ONLINE-CHD-J-414. Laboratories can order the bar together with its base unit and companion experiments straight from the manufacturer, and spares enquiries are handled the same way. Visit the company profile to learn more.
Related Thermodynamics & Heat Transfer Lab Equipment
Base unit and companion experiments for a complete heat transfer bench:
- Heat Transfer — the base unit of this experiment range, with heater supply and thermocouple sockets.
- Radial Heat Conduction Experiment — a companion base-plate experiment on radial conduction.
- Emissivity Natural Convection And Radiation — isolates radiation from convection at different pressures.
- Free and Force Convection Apparatus — convection from heated surfaces in still and moving air.
The full selection is in Thermodynamics & Heat Transfer Lab Equipment.
Frequently Asked Questions
What is an extended surface?
An extended surface, or fin, is a part that projects from a hot body to increase its heat loss. The Extended Surface Heat Transfer apparatus models one as a thin solid bar heated at one end, losing heat along its length.
Why is the bar coated matt black?
The matt black coating on the Extended Surface Heat Transfer bar gives a consistent and predictable emissivity value, so students can calculate the heat lost by radiation with confidence and separate it from the heat lost by natural convection.
How are temperatures measured along the bar?
Thermocouples on the Extended Surface Heat Transfer apparatus measure the temperature along the surface of the bar at equally spaced intervals, which lets students plot a clear temperature profile from the heated end to the tip.
Does it need the Heat Transfer Experiments Base Unit?
Yes. The heater and thermocouples of the Extended Surface Heat Transfer apparatus connect to sockets on the Heat Transfer Experiments Base Unit. Ask us through the contact page to quote both together.
How does heat leave the bar?
In the Extended Surface Heat Transfer apparatus, heat conducts along the bar from the heater and then transfers to the local surroundings by natural convection and radiation, the combination that governs real fins in still air.
Who manufactures the Extended Surface Heat Transfer apparatus?
Jain Scientific Equipments Pvt Ltd (ScienceLab) is the OEM of the Extended Surface Heat Transfer apparatus and manufactures it at its own licensed factory in Saha, Ambala, India, supplying colleges, dealers and importers directly.
Request a Quote
For a quotation on the Extended Surface Heat Transfer apparatus, with or without its base unit, write to us via the contact page or add it to the enquiry cart. Quotes come direct from the manufacturer for India and international markets.
Last updated: 24 September 2026
