Heat Transfer in Agitated Vessel:
Product Code : EL-HTL-11087
Quick answer: The heat transfer in agitated vessel apparatus measures the heat transfer coefficient between hot water in a stirred vessel and cold water flowing through a submerged copper coil. A 20 litre heated vessel holds an 8-turn helical coil around a 150 mm agitator, so students can see how agitator speed changes the coefficient. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Component | Specification |
|---|---|
| Vessel | Approx. 20 litre, glass wool insulated, electric heater at the bottom |
| Agitator | 150 mm dia., 1/8 HP motor |
| Helical coil | 200 mm dia., 8 turns, 3/8 inch copper tube |
| Controllers | Separate controllers for heater and agitator motor |
| Temperature measurement | Vessel water and coil water inlet and outlet |
| Water supply | Approx. 4 to 5 litre per minute |
| Services | 230 V, 15 A single-phase stabilised supply; drain; floor area 1.5 x 1 x 1 m (H) |
How the agitated vessel experiment is done
Stirred vessels with coils or jackets are used across the chemical, food and pharmaceutical industries to heat or cool batches. The heat taken up by the coil water is Q = m cp (T_out - T_in), and the overall coefficient is U = Q / (A LMTD), where A is the outer area of the coil and LMTD the log mean temperature difference between the vessel water and the coil water.
Agitation thins the boundary layer on the outside of the coil, so the vessel-side coefficient rises with impeller speed. Results are usually correlated as Nu = a Re^b Pr^(1/3), where the impeller Reynolds number is Re = rho N D^2 / mu, with N the speed and D the 150 mm agitator diameter.
- Fill the vessel with water and heat it to the set temperature.
- Start the cold water flow through the coil at a steady rate.
- Start the agitator and set the first speed.
- At steady state, record the vessel temperature, the coil inlet and outlet temperatures and the water flow.
- Repeat at several agitator speeds and plot U against speed.
Key features
- Approx. 20 litre vessel with bottom electric heater and glass wool insulation
- Submerged helical coil of 3/8 inch copper tube, 200 mm dia., 8 turns
- 150 mm agitator on a 1/8 HP motor at the centre of the coil
- Separate controllers for the heater and the agitator motor
- Temperature indicator for vessel water and coil inlet and outlet
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the agitated vessel apparatus at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Heat Transfer Lab products
- Emissivity Measurement Apparatus (EL-HTL-11088)
- Specific Heat of Air Apparatus (EL-HTL-11085)
- Stefan-Boltzmann Apparatus (EL-HTL-11089)
- Forced Convection Apparatus (EL-HTL-11084)
- Critical Heat Flux Apparatus (EL-HTL-11090)
- Natural Convection Apparatus (EL-HTL-11083)
The full range is in the Heat Transfer Lab section of the Engineering Lab range.
Frequently asked questions
What does the agitated vessel apparatus measure?
It measures the heat transfer coefficient for a coil submerged in a heated, stirred vessel at different agitator speeds.
What are the helical coil details?
The coil is 200 mm in diameter with 8 turns of 3/8 inch copper tube.
What services does the apparatus need?
A 230 V, 15 A single-phase stabilised supply, a drain and a floor area of about 1.5 x 1 m.
What is the price of the agitated vessel apparatus?
Prices are not published on the website. Add the agitated vessel apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-HTL-11087 and the quantity, to receive a quotation.
Does Lab Exports manufacture the agitated vessel apparatus?
Yes. Lab Exports manufactures the agitated vessel apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-HTL-11087.
Request a quote
Email [email protected] with the house code EL-HTL-11087 and the quantity, or add the agitated vessel apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.