Thermal Conductivity of Liquid & Gases | ThermoFlux 7035
A model-specific apparatus for experimental study of linear and radial heat conduction and determination of thermal conductivity of materials, 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.
Product Overview
Thermal Conductivity of Liquid & Gases ThermoFlux 7035, Technical Specifications
| Parameter | Detail |
|---|---|
| Model | ThermoFlux 7035 |
| Test Fluids | Water, oil, air, carbon dioxide |
| Annular Gap | 0.4 mm radial clearance between two coaxial cylinders |
| Inner Cylinder Heating | Continuous electrical heating via cartridge heater |
| Outer Cylinder Cooling | Water-cooled jacket |
| Temperature Display | Digital, on control panel |
| Heater Power Display | Digital, on control panel |
| Power Control | Potentiometer (variable transformer) |
Technical Data
Test Module
| Parameter | Detail |
|---|---|
| Configuration | Two cylindrical plugs assembled with 0.4 mm gap |
| Jacket Type | Cylindrical water-cooled jacket |
Inner Cylinder Plug
| Parameter | Value |
|---|---|
| Outer Diameter | 33.3 mm |
| Length | 120 mm |
| Material | Copper |
Outer Cylinder Plug
| Parameter | Value |
|---|---|
| Inner Diameter | 34.1 mm |
| Length | 100 mm |
| Material | Copper |
Cartridge Heater
| Parameter | Value |
|---|---|
| Power | 150 W |
| Temperature Limitation | 150 °C |
| Safety | High-temperature cut-off via temperature controller |
Temperature Instrumentation
| Parameter | Value |
|---|---|
| Sensor Type | Type K Thermocouple |
| Calibrated Range | -100 ~ 400 °C |
Cylindrical Water Jacket
| Parameter | Value |
|---|---|
| Material | Stainless steel |
Control Panel
| Parameter | Detail |
|---|---|
| Includes | Variable transformer, power transducer, temperature controllers/indicator |
| Indicators | Digital displays for temperatures and heater power |
| Selector | Thermocouple selector switch |
| Wiring | All necessary electrical wiring included |
Key Features
- Thermal conductivity investigation: Designed for direct experimental determination of thermal conductivity (k) of common fluids, water, oil, air, and carbon dioxide, using the Thermal Conductivity of Liquid & Gases ThermoFlux 7035
- 0.4 mm annular gap: Extremely narrow radial clearance between coaxial cylinders minimises natural convection, isolating conductive heat transfer
- Coaxial concentric cylinder design: Two copper cylindrical plugs, inner (Ø 33.3 mm, 120 mm length) and outer (Ø 34.1 mm, 100 mm length)
- Continuous electrical heating: Inner cylinder heated via 150 W cartridge heater with 150 °C temperature limit
- High-temperature safety cut-off: Automatic protection via integrated temperature controller
- Water-cooled outer cylinder: Stainless steel jacket with water inlet and drain connections
- Type K thermocouple instrumentation: Three thermocouples positioned across heating and cooling cylinders; calibrated range -100 ~ 400 °C
- Digital control panel: Displays temperature readings and heater power; includes potentiometer for variable power control, thermocouple selector switch, variable transformer, and power transducer
- Two fluid ports: Inner copper plug includes ports for introducing and venting the test fluid
- Optional DAQ software: ThermoFlux 7035, developed in National Instruments™ LabVIEW™ environment; compatible with all Windows™ versions
Experiments
- Calibration of the unit to establish the effect of incidental heat transfer
- Determining the thermal conductivity (k) of various liquids and gases
- Steady heat conduction in gases and liquids:
- Determine the thermal resistance of fluids
- Determination of thermal conductivity (k) for different fluids at different temperatures
- Transient heat conduction in fluids:
- Interpret transient states during heating and cooling
- Introduction to transient heat conduction with the block capacity model
Construction and Design
The Thermal Conductivity of Liquid & Gases ThermoFlux 7035 is constructed around two coaxial concentric copper cylindrical plugs separated by a precisely controlled 0.4 mm radial gap, the core functional element of this Thermal Conductivity of Liquid & Gases apparatus. The inner plug (Ø 33.3 mm, 120 mm long) is continuously electrically heated via a 150 W cartridge heater protected by a high-temperature cut-off controller. The outer plug (Ø 34.1 mm, 100 mm long) is enclosed within a stainless steel water-cooled cylindrical jacket equipped with inlet and drain connections. Both copper plugs carry two ports for fluid introduction and venting. Three Type K thermocouples, calibrated from -100 ~ 400 °C, are positioned across the heating and cooling cylinders to capture hot and cold face temperatures of the test fluid precisely. The test module connects to a control panel housing a variable transformer, power transducer, temperature controllers, digital indicators for temperature and heater power, and a thermocouple selector switch.
Software
ThermoFlux 7035 (Optional)
- DAQ software specially designed in the National Instruments™ LabVIEW™ environment
- Measures and calculates experimental results from the apparatus
- Includes a set of electronic sensors when the software option is selected
- Compatible with all Windows™ environments
Scope of Delivery
- 1 × Experiment unit
- 1 × Syringe
- 1 × Instruction manual
Q1. What fluids can be tested with the Thermal Conductivity of Liquid & Gases ThermoFlux 7035?
The unit is designed to test common fluids including water, oil, air, and carbon dioxide.
Q2. Why is the annular gap set to 0.4 mm?
The 0.4 mm radial clearance between the two coaxial cylinders is intentionally made extremely small to reduce natural convection, ensuring that heat transfer through the test fluid occurs predominantly by conduction.
Q3. What type of temperature sensors are used in the ThermoFlux 7035?
The apparatus uses Type K thermocouples with a calibrated range of -100 ~ 400 °C. Three thermocouples are positioned across the heating and cooling cylindrical plugs.
Q4. What safety feature is built into the heater?
The 150 W cartridge heater is protected by a high-temperature cut-off mechanism via an integrated temperature controller, with a maximum operating limit of 150 °C.
Q5. Is DAQ software available for this unit?
Yes. Optional DAQ software (ThermoFlux 7035) is available, developed in the National Instruments™ LabVIEW™ environment and compatible with all Windows™ versions. A set of electronic sensors is included when the software option is selected.
Need Assistance? We're Here to Help!
Connect with our team for product specifications, pricing, and customized solutions for your institution or project.
