Filmwise and Dropwise Condensation and Boiling Manufacturer,Supplier and Exporter in India
Product Code : EL-VATP-11367
Quick Answer: The Filmwise and Dropwise Condensation and Boiling apparatus heats and condenses water inside a partially filled glass vessel, with a separate control module and digital display. Two water-cooled vertical cylinders, one gold-plated and one with an oxidised finish, show filmwise and dropwise condensation.
Last updated: October 2026
Key Features
- Partially filled glass vessel with a heater coil
- Resistance wire heater element with adjustable current for boiling tests; wire temperature well above 100°C
- Visible boiling stages: free convection, subcooled, nucleate and film boiling
- Two water-cooled vertical cylinder specimens for condensation
- One specimen gold-plated, the other with an oxidised finish, to show the effect of surface finish
- Separate control module with digital display
Technical Specifications
| Specification | Value |
|---|---|
| Vessel | Glass, partially filled |
| Heating | Heater coil; resistance wire element for boiling |
| Condensing specimens | Two water-cooled vertical cylinders |
| Specimen finishes | Gold plating; oxidised finish |
| Control | Separate module with digital display |
About This Product
Students raise the wire current and watch the water pass from free convection through subcooled boiling with small bubbles, nucleate boiling with large bubbles, and film boiling where a vapour blanket forms and radiation becomes important. On the condensing side, the cooling water flow and temperature rise at each cylinder give the heat transfer, so filmwise and dropwise condensation can be compared directly.
Frequently Asked Questions
Why do the two condensing cylinders have different finishes?
One is gold-plated and the other has an oxidised finish, which shows the difference between filmwise and dropwise condensation and the effect of surface finish on heat transfer.
How is condensing heat transfer measured?
From the cooling water flow rate and its temperature change at each cylinder.
Related: VDAS And Thermodynamics Products, Emissivity Natural Convection and Radiation and Temperature Measurement and Calibration Apparatus.
For a quotation on the Filmwise and Dropwise Condensation and Boiling, contact Educational Instrument.
