Note:

This formula calculates the steam consumption of drying cylinders used in industrial processes. It determines the amount of steam required to remove moisture from wet material and heat the dry material. The calculation considers the heat energy needed for evaporation and the heating process.

Explanation of Parameters

• Ww (Wet Material Throughput) (kg/h): The amount of wet material entering the drying machine per hour.
• Wd (Dry Material Throughput) (kg/h): The amount of dry material leaving the drying machine per hour.
• T1 (Initial Temperature) (°C): The temperature of the material before drying.
• T2 (Final Temperature) (°C): The temperature of the material after drying.
• hfg (Enthalpy of Evaporation of Steam) (kJ/kg): The energy required to convert water into steam at a given pressure.

Explanation of Constants

• 1.5: A safety factor used to account for heat losses in the drying process.
• 2550 (kJ/kg): Average water enthalpy + enthalpy of evaporation required to evaporate moisture.
• 1.26: A correction factor considering the heat transfer efficiency in the drying process.

Real-Life Applications

This formula is widely used in industries where drying plays a crucial role:

• Paper Mills: To dry pulp and paper efficiently using steam-heated cylinders.
• Food Processing: To remove excess moisture from grains, vegetables, and dairy products.
• Textile Industry: To dry fabrics and ensure proper textile finishing.
• Chemical Manufacturing: To control drying in various chemical production processes.

Conclusion

This formula is essential for optimizing steam usage, reducing energy consumption, and maintaining consistent drying efficiency in industrial applications. By using this calculator, industries can ensure better product quality, cost savings, and environmental sustainability.