1. Drying characteristics of the material-drying curve, critical moisture content, and equilibrium moisture content under the proposed drying conditions.

2. Physical and chemical properties of materials - form, moisture content, water properties, crystal water, viscosity, heat sensitivity, toxicity, corrosiveness, odor, flammability, explosiveness, etc.

3. The impact of material commodity value and drying effect on it.

4. Drying output requirements and long-term planning.

5. Upstream and downstream processes of material drying process.

6. Requirements for material recovery rate.

7. Available heat sources (coal, fuel oil, electricity, gas, liquefied gas, natural gas.)

8. Past drying methods of materials or drying methods of similar products.

9. Environmental protection requirements - restrictions on dust emissions, noise, vibration, odor, etc.

10. Size of the installation site and whether there are any special requirements.

11. The user’s operator level and maintenance capabilities.

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