Biomass hot air for agricultural processing
Crops are not interchangeable thermal loads.
A mango slice, a coffee bean and a cassava chip differ in initial moisture, in surface-to-volume ratio, in sugar and oil content, and in the temperature at which quality begins to degrade. Our configurations reflect those differences rather than averaging across them.
Indicative price of a biomass hot air generator, Ex-Works (EXW): USD 3,140–14,135
Shipping, customs clearance and local duties are extra. The final price depends on the configuration and is fixed in the written quotation.
Fruit processing
- Mango — 5–8 mm slice, 65–70 °C, 2.5–3.0 m/s, 30–40% RH, 16–20 h, 85% → 12–14% moisture, 35–40 kg/m².
- Pineapple, papaya & banana — sugar-crystallisation management and browning prevention are the controlling variables.
- Citrus — peel processing with essential-oil retention.
- Stone & pome fruit — controlled ramp profiles preventing case hardening on high-moisture flesh.
Grain, legume & root-crop processing
- Cereals — moisture reduction to safe storage levels, with drying rate limited to prevent stress cracking.
- Legumes — protein-quality preservation and controlled dehydration.
- Root crops — cassava, yam and sweet potato in chip, flour and granule form.
- Oilseeds — moisture conditioning ahead of pressing or extraction.
Quality-control infrastructure
- Moisture-content analysers — in-process and final verification.
- Temperature monitoring — multi-point measurement across the chamber.
- Humidity measurement — inlet and exhaust, giving a live picture of drying rate.
- Weight-loss monitoring — the most direct real-time indicator of drying progress.
- Data logging — full cycle records supporting traceability and buyer audit.
Specification
These are the platform figures every configuration on this page is built from. The values specific to your product and volume are fixed at the sizing stage.
| Parameter | Value |
|---|---|
| Biomass burner | 200,000–900,000 kcal/h, PLC-controlled staged combustion |
| Accepted fuels | Pellets, 90 × 90 mm briquettes, cashew shell, crop residue |
| Hot air generator | Double chamber, three-pass, 2,500–3,000 m³/h |
| Delivered air temperature | 50–150 °C, controlled |
| Heat transfer | Indirect — combustion gases never touch the product |
| Drying chamber | 40–100 °C, 2.0–3.0 m/s, 1,500 kg per batch |
| Construction | 100 mm rockwool-core sandwich panel, 120-minute fire rating |
| Trays and wagons | SS304 stainless steel |
| Control | Delta PLC with recipe management, HMI, VFDs |
| Warranty | 12 months from date of shipment |
| Manufacturing lead time | 10–18 weeks from confirmed order and receipt of advance payment |
In prose: the burner runs from 200,000 to 900,000 kcal/h under PLC-controlled staged combustion, firing pellets, 90 × 90 mm briquettes, cashew shell or crop residue. The three-pass double-chamber generator moves 2,500 to 3,000 m³/h and delivers air between 50 and 150 °C, transferred indirectly so combustion gases never touch the product. Drying chambers hold 40 to 100 °C at 2.0 to 3.0 m/s with 1,500 kg per batch, built from 100 mm rockwool-core sandwich panel to a 120-minute fire rating, with SS304 trays and wagons. Manufacturing takes 10 to 18 weeks from confirmed order and receipt of advance payment, and the warranty runs 12 months from date of shipment.
Where this equipment is used
The same equipment is specified across several product classes. These are the ones it is configured for most often:
tea, coffee and cocoa drying and livestock feed drying.
Each of those pages carries the drying parameters, cycle times and quality targets for that product class.
Where this sits in the range
This page describes one duty. The equipment itself is the biomass hot air generator, and the closest neighbouring duty is the industrial drying duty.
Frequently asked questions
Why does one generator suit crops that behave so differently?
Because the generator supplies clean air at a controlled temperature and the crop-specific part lives in the recipe, not the hardware. A mango slice, a coffee cherry and a cassava chip need different setpoints and dwell times, all inside the same 50 to 150 °C delivered range with 2,500 to 3,000 m³/h behind it.
What does indirect transfer actually buy an agro-processor?
The right to sell into markets that audit. Combustion gases never reach the product, so there is no smoke taint and no combustion residue to explain to a buyer. Direct firing is cheaper to build and it closes doors — most visibly in cocoa and coffee, where smoke taint is a recognised rejection reason. Our generators are indirect throughout, moving 2,500 to 3,000 m³/h.
How much operator attention does the system need daily?
Ash removal, a fuel-handling routine, and a check that the recipe running matches the product loaded. That is the honest trade against diesel or LPG: you take on a daily operator task and you move fuel cost into local currency and a locally available fuel. The Delta PLC handles the control across the full 40 to 100 °C range; it does not handle the ash.
Discuss your crop
Tell us the product and we’ll bring the validated parameter set — or develop one.
Discuss your crop