Author: Site Editor Publish Time: 2025-08-20 Origin: Site
Last updated: August 29, 2026
Infrared can shorten the heat-up stage of food drying, but performance depends on the product, slice thickness, initial moisture, airflow and quality target. Savings and drying-time reductions cannot be transferred from an unrelated process. A useful project starts with a controlled validation plan.
Record product variety, dimensions, loading depth, initial moisture, target moisture or water activity, colour, texture and acceptable temperature. The endpoint should be measured with an agreed method rather than judged only by time or touch.
Washing, slicing, blanching and surface water can change drying behaviour. Keep slice thickness and tray loading consistent during trials. Thick piles or overlapping pieces create shadowing and restrict vapour removal, so the lamp setting cannot compensate for poor loading practice.
| Variable | Record | Quality check |
|---|---|---|
| Emitter power and distance | Zone setting and product position | Surface temperature and scorching |
| Airflow and exhaust | Fan setting, inlet and outlet condition | Drying uniformity and condensation |
| Loading | Mass, thickness and tray pattern | Moisture distribution |
| Time and stages | Ramp, main dry and cooling | Final moisture, colour and texture |
Infrared supplies evaporation energy, while moving air removes the humid boundary layer. Too little exhaust slows drying; excessive cold air can cool the product unevenly. Consider staged power and airflow as the product becomes drier and more temperature-sensitive.
Compare YFR medium-wave lamps and carbon infrared lamps through product trials.
Product temperature and dryness do not by themselves prove microbial safety, nutrient retention or shelf life. Those outcomes require appropriate laboratory methods and food-safety review. Use cleanable construction and validate the complete process with qualified personnel.
There is no universal choice. Absorption, product thickness, moisture, colour and required response must be tested.
No. Evaporated moisture still needs to leave the product surface and drying enclosure.
No. Excessive surface heating can cause case hardening, colour change or texture damage.
Measure input energy per unit of accepted dry product at the same moisture and quality endpoint.
Send YFR the product, loading and moisture targets for an infrared test plan and module-layout review.