Critical Heat Flux Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-HTL-10050
Jlab Export is a leading Critical Heat Flux Apparatus Manufacturer,and suppliers in India
Critical Heat Flux Apparatus (code EL-HTL-10050) is a pool boiling demonstration in which a current-heated test wire, 35 or 40 gauge and 10 cm long, sits in a glass trough of water kept at constant temperature. Raising the wire voltage step by step shows each boiling regime up to burnout. This boiling-curve apparatus is built by JLab in Ambala, India, and comes with a technical manual.
Specifications
| Parameter | Detail |
|---|---|
| Test wire | 35 gauge or 40 gauge, length 10 cm |
| Water heater | Nichrome heater, 1 kW (1 no.) |
| Water vessel | Glass trough |
| Lighting | Table light to observe the test wire |
| Wire input measurement | Voltmeter and ammeter |
| Wire voltage control | Dimmerstat |
| Electrical supply | 220 V, stabilised single phase |
| Floor space | 1 m x 1 m at working height |
| Documentation | Technical manual |
| Quality check | Each heat flux apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-HTL-10050 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Boiling Regimes Seen on the Wire
The 1 kW nichrome heater brings the trough water up to temperature and holds it there. At low wire input, heat leaves by natural convection and no bubbles form. As the dimmerstat raises the voltage, isolated bubbles appear at nucleation sites, then merge into columns as nucleate boiling grows, and the heat flux climbs steeply for a small rise in wire temperature. At the peak of the boiling curve, the critical heat flux, vapour cannot leave fast enough for liquid to keep wetting the surface. The input fixes the heat flux of an electrically heated wire, so past that peak a vapour film blankets it, its temperature jumps towards the film boiling branch, and the thin wire glows and burns out.
Working Out the Burnout Heat Flux
The voltmeter and ammeter give the wire power, P = V × I, at the last reading before failure. Dividing by the wire surface area π d L, with d from the wire gauge and L = 10 cm, gives the critical heat flux q = V I / (π d L) in W/m². Repeating the run on the other gauge shows how wire diameter shifts the burnout flux, and the result can be compared with Zuber’s prediction for pool boiling. Each run needs a fresh length of wire.
Other Boiling and Condensation Rigs
- Critical Heat Flux Pool — nucleate, transition and film boiling of saturated liquid on a submerged hot wire.
- Boiling Heat Transfer Unit — boiling and condensation watched inside a transparent pressure vessel.
- Dropwise and Filmwise Condensation Apparatus — heat transfer coefficients for the reverse phase change, condensing steam.
More phase-change and conduction rigs are listed in Heat Transfer Lab, part of Engineering Lab Equipment.
Request a Quote
Use Add To Cart or the contact page to ask for a quotation, stating the number of rigs, the wire gauge you prefer and the delivery address.
Last updated: 30 October 2026
