Free and Forced Convection Heat Exchanger | ThermoFlux – 7027
Product Overview
A CE-certified heat transfer apparatus for measuring LMTD, overall heat transfer coefficient, and effectiveness under parallel/counter flow conditions, manufactured by Scientico India to ISO 9001:2015 standards. Supplied with calibration certificate, operation manual, and complete export documentation. Designed for Thermodynamics Lab Equipment laboratories in engineering colleges and technical institutions.
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Technical Specifications
Free and Forced Convection Heat Exchanger ThermoFlux – 7027, Technical Specifications
| Parameter | Detail |
|---|---|
| Product Name | Free and Forced Convection Heat Exchanger |
| Model | ThermoFlux – 7027 |
| Duct Flow Cross-Section | 120 × 120 mm |
| Duct Height | 1000 mm |
| Fan Position | Axial fan at top of duct |
| Heating Element Temperature Limit | 90°C |
| Heating Power Control | Continuously variable, 0–100 W, direct watt readout |
| Temperature Measurement Resolution | 0.1°C |
| Temperature Sensors | Thermocouple sensors with direct digital readout (°C) |
| Air Velocity Measurement | Portable anemometer mounted on duct |
| Fins, Number of Fins | 7 |
| Fins, Heating Power | 150 W |
| Fins, Heat Transfer Area | 0.14 m² |
| Pipe Bundle, Number of Tubes | 20 |
| Pipe Bundle, Heating Power | 150 W |
| Pipe Bundle, Heat Transfer Area | 0.06 m² |
| Flat Surface, Heating Power | 150 W |
| Flat Surface, Surface Area | 0.013 m² |
| Cylinder with Even Surface Temperature (Optional), Heating Power | 150 W |
| Cylinder with Even Surface Temperature (Optional), Heat Transfer Area | 0.0112 m² |
| Software (Optional) | ThermoFlux – 7027 DAQ software, LabVIEW-based, Windows compatible |
Technical Data
Air Duct
| Parameter | Value |
|---|---|
| Flow Cross-Section | 120 × 120 mm |
| Height | 1000 mm |
| Fan | Axial, top-mounted |
Heating Elements, Standard (Supplied)
| Module | Heating Power | Heat Transfer Area | Additional Data |
|---|---|---|---|
| Finned Surface | 150 W | 0.14 m² | 7 fins |
| Pipe Bundle | 150 W | 0.06 m² | 20 tubes |
| Flat Surface | 150 W | 0.013 m² | - |
Heating Elements, Temperature Limitation
| Parameter | Value |
|---|---|
| Maximum Surface Temperature | 90°C |
Optional Modules
| Module | Heating Power | Heat Transfer Area |
|---|---|---|
| Cylinder with even surface temperature | 150 W | 0.0112 m² |
| Plate surface | 150 W | 0.01 m² |
| Cylinder with heating foil (local heat transfer) | 150 W | 0.0112 m² |
Key Features
Key Features
- Complete Free and Forced Convection Heat Exchanger: Fully self-contained vertical duct apparatus with three interchangeable 150 W plug-in surface modules and integrated instrumentation
- Vertical air duct: 120 × 120 mm flow cross-section, 1000 mm height; axial fan at top for forced convection air stream
- Finned surface module: 7 fins, 150 W heating power, 0.14 m² heat transfer area
- Pipe bundle module: 20 tubes, 150 W heating power, 0.06 m² heat transfer area
- Flat surface module: 150 W heating power, 0.013 m² surface area
- Temperature limit: 90°C on all heating elements
- Continuously variable heating power: 0–100 W output with direct watt readout from control panel
- Temperature measurement: Thermocouple sensors, 0.1°C resolution, direct digital readout in °C
- Air velocity measurement: Portable anemometer mounted on duct
- Dual convection modes: Fan-on for forced convection; fan-off for free convection, same modules used in both modes
- Horizontal bench use: Each module operable independently on the bench in horizontal orientation for free convection coefficient determination
- Optional surface modules: Plain cylinder (0.0112 m², 150 W), cylinder with heating foil for local heat transfer study, plate surface
- Optional DAQ software: ThermoFlux – 7027 LabVIEW-based software displays temperatures, heating power, and air velocity; calculates results automatically; Windows compatible
Experiments
- Demonstration of the relationship between input power and surface temperature in free convection
- Demonstration of the relationship between input power and surface temperature in forced convection
- Demonstration of the use of extended surfaces to improve heat transfer
- Determination of the temperature distribution along an extended surface
- Comparison between free and forced convection for finned surface
- Comparison between free and forced convection for pinned surface
- Comparison between free and forced convection for flat surface
- Comparison between vertical and horizontal finned surfaces in free convection
- Comparison of heat transfer surface efficiency
- Comparison between the coefficient of heat transfer and Nusselt number for free and forced convection
- Temperature profile along pinned and finned surfaces
Construction and Design
The Free and Forced Convection Heat Exchanger ThermoFlux – 7027 is constructed as a fully self-contained vertical duct unit with a 120 × 120 mm flow cross-section and 1000 mm height, housing an axial fan at the top to supply the forced convection air stream. Three plug-in heated surface modules of known geometry, finned surface (7 fins, 0.14 m²), pipe bundle (20 tubes, 0.06 m²), and flat surface (0.013 m²), are supplied as standard; each is rated at 150 W and subject to a 90°C surface temperature limit. Modules mount directly into the duct and may also be used independently in horizontal bench orientation for free convection studies. The control panel provides continuously variable heating power from 0 to 100 W with direct watt readout, fan speed control, and thermocouple-based temperature measurement at 0.1°C resolution with direct digital readout in °C. A portable anemometer mounts on the duct for air velocity measurement. This Free and Forced Convection Heat Exchanger supports optional modules, a plain cylinder (0.0112 m², 150 W), a cylinder with heating foil for local heat transfer investigation, and a plate surface, which extend the experimental capability beyond the standard scope of delivery. The optional LabVIEW-based DAQ software integrates with an electronic sensor set to display temperatures, heating power, and air velocity, and to calculate experimental results automatically under Windows environments.
Software
ThermoFlux – 7027 DAQ Software (Optional)
- Developed in National Instruments™ LabVIEW™ environment
- Displays temperatures, heating power, and air velocity; calculates experimental results
- Compatible with all Windows™ operating systems
- When the software option is selected, a set of electronic sensors is included
Scope of Delivery
- 1 × Experiment unit
- 1 × Pipe bundle surface module
- 1 × Finned surface module
- 1 × Flat surface module
- 1 × Can of thermal paste
- 1 × Instruction manual
Standards & Compliance
- Manufactured under ISO 9001:2015 Quality Management System
- CE Marking - European Conformity where applicable
- Supplied with calibration certificate, operation manual, and experiment guide
- 12-month manufacturer's warranty (parts & labour from installation)
Ordering & Delivery
- Incoterms: CIF to destination seaport, FOB Mundra/Nhava Sheva, or Ex-Works Ambala
- Lead time: 3–5 weeks production + sea transit to destination
- Payment: LC (Letter of Credit) or T/T bank transfer against proforma invoice
- Documentation: commercial invoice, packing list, bill of lading, certificate of origin, insurance certificate
Frequently Asked Questions
Q1. Which heating surface modules are supplied as standard with the ThermoFlux – 7027?
Three modules are supplied: a finned surface (7 fins, 0.14 m², 150 W), a pipe bundle (20 tubes, 0.06 m², 150 W), and a flat surface (0.013 m², 150 W). Optional modules include a plain cylinder, a cylinder with heating foil, and a plate surface.
Q2. How are free and forced convection modes selected on this apparatus?
Forced convection is achieved by activating the axial fan at the top of the duct; free convection experiments are conducted with the fan inactive. The same plug-in surface modules are used in both modes.
Q3. What is the heating power control range of the Free and Forced Convection Heat Exchanger?
The control panel provides continuously variable electrical output from 0 to 100 W, with a direct readout in watts.
Q4. Can the surface modules be used outside the duct?
Yes. Each module may be used independently on the bench in horizontal orientation to establish free convection coefficients without the duct, extending the experimental versatility of the apparatus.
Q5. What is the maximum surface temperature of the heating elements?
All heating elements on the ThermoFlux – 7027 are subject to a temperature limitation of 90°C.