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Free and Force Convection Apparatus
Free and Force Convection Apparatus (Product Code: SLE/MCE/73) is an air-duct experiment unit used to study natural (free) and forced convection heat transfer from heated surfaces in heat transfer laboratories. Among engineering lab equipment in India it is distinguished by four selectable heating elements of different geometries — a plate, two cylinders and a 23-tube element — tested in a 120 × 120 mm duct with an axial fan. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Air duct flow cross-section | 120 × 120 mm |
| Height | Approx. 0.6 m |
| Heating elements | Four, with different geometries; designed to release heat only at their surface; temperature limitation 90 °C |
| Tube element | 23 tubes; heating power 20 W; heat transfer area 0.001 m² |
| Cylinder (surface temperature measured) | Heating power 20 W; heat transfer area 0.0112 m² |
| Plate | Heating power 40 W; heat transfer area 2 × 0.01 m² |
| Cylinder | Heating power 40 W; heat transfer area 0.0112 m² |
| Axial fan | Max. flow rate 500 m³/h; max. pressure difference approx. 950 Pa |
| Sensors | Temperature at the inlet and outlet of the air duct; air velocity for determining airflow rate |
| Instrumentation | Microprocessor-based, protected in the housing; heating power and flow rate adjusted and displayed via the software |
| Software | System operation, data acquisition and educational software; PC connection via USB |
| Measuring range – air velocity | 0–10 m/s |
| Measuring range – temperature | 4 × 0–325 °C |
| Measuring range – heating power | 0–50 W |
| Power consumption | 90 W |
| Dimensions | 800 × 600 × 800 mm |
| Weight | Approx. 30 kg |
| Power supply options | 230 V, 50 Hz, 1 phase; 230 V, 60 Hz, 1 phase; or 120 V, 60 Hz, 1 phase |
| Product code | SLE/MCE/73 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Free and Force Convection Apparatus Used For?
Air flows past the selected heating element and absorbs heat from its surface. With the fan off, air moves past the element by buoyancy alone (free convection); with the fan running, forced convection takes over and heat transfer rises with air velocity. Students record inlet and outlet air temperatures, element surface temperature, air velocity and heating power, then calculate heat transfer coefficients for each geometry and compare them with textbook correlations.
Because the elements release heat only at their surface and the unit is compact, they heat up quickly and each run is short, so a class can test several geometries in one session. Fit one element at a time, let temperatures settle at every fan setting, and keep element temperatures within the 90 °C limitation. Logging through the USB software keeps a complete record for the lab report.
What to Specify When Ordering
- Power supply version: 230 V 50 Hz, 230 V 60 Hz or 120 V 60 Hz, single phase
- A PC at the bench for the USB operating, data-acquisition and educational software
- Number of units, based on how many student groups will run convection practicals
OEM Manufacturer
Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597), trading as ScienceLab, is the OEM that manufactures the Free and Force Convection Apparatus. Production takes place at its licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala, Haryana, which operates under Factory Licence AMB-ONLINE-CHD-J-414.
Buying from the manufacturer means engineering colleges, dealers and importers get quotations, technical answers and spares enquiries from one source — ask us for anything you need. See the company profile for more.
Related Thermodynamics & Heat Transfer Lab Equipment
Convection practicals are often taught alongside these units:
- Emissivity Natural Convection And Radiation — separates natural convection from radiation losses
- Extended Surface Heat Transfer — shows how fins and extended surfaces increase heat transfer
- Computerized Emissivity Measurement Apparatus — covers radiation, the third mode of heat transfer
- Convection in Air Apparatus — a simpler convection demonstration for school physics
For the complete range, open the Thermodynamics & Heat Transfer Lab Equipment category.
Frequently Asked Questions
What heating elements come with the Free and Force Convection Apparatus?
The Free and Force Convection Apparatus has four selectable heating elements with different geometries: an element with 23 tubes (20 W), a cylinder with surface temperature measurement (20 W), a plate (40 W) and a second cylinder (40 W).
What airflow can the fan of the Free and Force Convection Apparatus provide?
The axial fan of the Free and Force Convection Apparatus delivers a maximum flow rate of 500 m³/h and a maximum pressure difference of about 950 Pa, while air velocity in the duct is measured over 0–10 m/s.
Is software included with the Free and Force Convection Apparatus?
Yes. The Free and Force Convection Apparatus includes software for system operation, data acquisition and educational use, connected to a PC via USB; heating power and flow rate are adjusted and displayed through it.
How long does an experiment on the Free and Force Convection Apparatus take?
The Free and Force Convection Apparatus is compact and its elements release heat only at their surface, so they heat up rapidly and experiment times are short — useful when several student groups share one unit.
Who manufactures the Free and Force Convection Apparatus?
The Free and Force Convection Apparatus is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its licensed factory in Saha, Ambala, Haryana, India. Quotations and repeat orders are handled by the manufacturer directly.
What power does the Free and Force Convection Apparatus need?
The Free and Force Convection Apparatus consumes 90 W and is listed for 230 V 50 Hz, 230 V 60 Hz or 120 V 60 Hz single-phase supply. Mention your laboratory supply when requesting a quotation.
Can the Free and Force Convection Apparatus be ordered in bulk or for export?
Yes. The Free and Force Convection Apparatus is supplied to universities, polytechnics and dealers in India and international markets. For several units, share the quantity, supply voltage and destination so one consolidated quotation can be prepared.
Request a Quote
To get a quotation for the Free and Force Convection Apparatus, write to us through the contact page or add it to the enquiry cart. The quote is prepared by the manufacturer, not a reseller.
Last updated: 24 September 2026
