Heat Pipe Apparatus
Product Code : EL-HTL-11080
Quick answer: The heat pipe apparatus compares a water-charged stainless steel heat pipe with a copper pipe and a plain stainless steel pipe of the same 25 mm OD x 450 mm size. Each is heated by an equal band heater and cooled by a water heat sink, so students see the heat pipe's nearly uniform temperature. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Component | Specification |
|---|---|
| Heat pipe | Stainless steel, 25 mm OD, 450 mm long, sealed, evacuated, partly filled with distilled water |
| Comparison pipes | Copper and stainless steel, same size as the heat pipe |
| Heaters | Equal-capacity band heater at the bottom of each pipe |
| Heat sinks | Water-filled, at the top of each pipe |
| Heater control | Dimmerstat, 4 A |
| Power measurement | Voltmeter and ammeter |
| Pipe temperatures | 4 thermocouples per pipe, multichannel digital indicator |
| Heat sink temperatures | 3 thermometers |
| Services | 230 V AC single phase; floor area approx. 1 x 0.5 x 0.5 m (H) |
How the heat pipe experiment is done
A heat pipe moves heat by evaporation and condensation rather than by conduction through metal. At the heated lower end the water boils at low pressure in the evacuated tube; the vapour rises to the cooled upper end, condenses and gives up its latent heat, and the liquid returns by gravity. Because the working fluid stays close to its saturation temperature along the whole length, the pipe runs almost isothermally.
A solid-walled copper or stainless steel pipe of the same size must carry heat by conduction, q = k A dT/dx, so it needs a steep temperature gradient to pass the same heat. With all three pipes side by side under identical heaters the contrast is plain: the heat pipe's four thermocouples read nearly the same, the copper pipe shows a moderate gradient and the stainless steel pipe a steep one.
- Fill the three heat sinks with water and note its starting temperature.
- Switch on the heaters and set the input with the dimmerstat.
- Record the four thermocouple readings on each pipe at regular intervals.
- Note the rise in heat sink water temperature on the thermometers.
- Compare the temperature profiles and the heat delivered to each sink.
Key features
- Heat pipe, copper pipe and stainless steel pipe of identical size, mounted vertically
- Equal-capacity band heaters at the base of each pipe
- Water-filled heat sinks at the top, with thermometers
- Four thermocouples per pipe on a multichannel digital indicator
- Dimmerstat with voltmeter and ammeter for testing at several heat inputs
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 heat pipe 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
- Critical Radius of Insulating Material (EL-HTL-11081)
- Composite Walls Apparatus (EL-HTL-11078)
- Pin Fin Apparatus (EL-HTL-11082)
- Natural Convection Apparatus (EL-HTL-11083)
- Forced Convection Apparatus (EL-HTL-11084)
- Specific Heat of Air Apparatus (EL-HTL-11085)
The full range is in the Heat Transfer Lab section of the Engineering Lab range.
Frequently asked questions
Why does the heat pipe stay at a nearly uniform temperature?
It carries heat by evaporating water at the hot end and condensing it at the cold end, so the fluid stays near its saturation temperature along the whole pipe.
What is the heat pipe compared with?
A copper pipe and a stainless steel pipe of the same 25 mm OD and 450 mm length, heated and cooled in the same way.
What is the price of the heat pipe apparatus?
Prices are not published on the website. Add the heat pipe apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-HTL-11080 and the quantity, to receive a quotation.
Does Lab Exports manufacture the heat pipe apparatus?
Yes. Lab Exports manufactures the heat pipe apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-HTL-11080.
Request a quote
Email [email protected] with the house code EL-HTL-11080 and the quantity, or add the heat pipe apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.