Triple-Effect Evaporator Design (Equal Area, Backward Feed)
Calculates mass balances, temperature distribution, heat duties, steam economy, and heat transfer areas for a triple-effect evaporator concentrating milk from 10% to 45% solids using backward feed and equal-area design.
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1. Define Input Parameters
2. Engineering Output
Total Evaporation Rate (m_evap)
- kg/h
- kg/h
Total Boiling Point Elevation (sum_BPE)
- °C
- °C
Available Temperature Driving Force (Delta_T_avail)
- °C
- °C
Sum of Inverse Heat Transfer Coefficients (inv_U_sum)
- m²·K/W
- m²·K/W
Temperature Drop Effect 1 (Delta_T_1)
- °C
- °C
Temperature Drop Effect 2 (Delta_T_2)
- °C
- °C
Temperature Drop Effect 3 (Delta_T_3)
- °C
- °C
Evaporation Per Effect (V_per)
- kg/h
- kg/h
Heat Duty Per Effect (Q_per)
- W
- W
Steam Consumption (m_steam)
- kg/h
- kg/h
Steam Economy (eta_economy)
- kg evap/kg steam
- kg evap/kg steam
Heat Transfer Area Effect 1 (A_1)
- m²
- m²
Heat Transfer Area Effect 2 (A_2)
- m²
- m²
Heat Transfer Area Effect 3 (A_3)
- m²
- m²
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Download Offline Excel CalculationContext & Assumptions
Multiple-effect evaporators (MEE) are widely used in the food and dairy industries to concentrate heat-sensitive products like milk by reusing vapor from one effect as the heating medium for the next. This calculator determines the thermal performance and heat transfer area for a triple-effect system with backward feed using an equal-area design approach, based on mass and energy balances and the available temperature driving force after accounting for boiling point elevation.
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