Natural Draft Tray Dryer Manufacturer,Supplier and Exporter in India
Product Code : EL-FMAHLE-7318
Jlab Export is a leading Natural Draft Tray Dryer Manufacturer,and suppliers in India
Natural Draft Tray Dryer (code EL-FMAHLE-7318) is a laboratory tray dryer in which the hot air stream itself sets up the draft, so air moves past the wet charge without a blower. Students use it to follow how moisture leaves a solid at raised temperature, normally with about 1 kg of sawdust. This natural-draft dryer is made by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Air circulation | Natural draft, produced by the hot air stream |
| Test material | Sawdust, about 1 kg |
| Support table needed | 500 W x 500 D x 750 H mm |
| Electric supply | 230 ± 10 V AC, 50 Hz, single phase, with proper earthing |
| Sockets needed | 5 A three-pin with switch (weighing scale); 15 A three-pin with switch (heater) |
| Quality check | Each tray dryer 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-FMAHLE-7318 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Natural Draft Versus a Blower
Heated air is lighter than the cooler air around it, so it rises and draws fresh air in behind it. The air speed over the tray therefore depends on the temperature difference and stays low, which makes drying slower and gentler than in a fan-driven unit. Running the same sawdust here and in the forced draft model shows students how much the air velocity changes the drying rate.
Building the Drying Curve
The wet sawdust is weighed at regular intervals on the weighing scale while it dries. Plotting moisture content against time, and drying rate against moisture content, shows a constant-rate period while the surface stays wet, followed by a falling-rate period once moisture has to move out from inside the particles. The heater and the scale each plug into their own switched socket on the bench.
Forced-Draft and Other Lab Dryers
- Forced Draft Tray Dryer — a blower drives the hot air, with an adjustable air flow rate.
- Tray Dryer — double-wall cabinet dryer with forced air blowers and thermostat control.
- Fluidized Bed Dryer — heated compressor air is passed up through a column of solids.
More unit-operation trainers are grouped in Fluid Mechanics and Hydraulics Lab Equipment, within Engineering Lab Equipment.
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Last updated: 30 October 2026
