// multi-utility computation suite · offline · instant · precise
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sci.heat-transfer-pasteuriser-plate Calculator
Calculates pasteurisation heat duty, plate area, and hot-side exit temperature for a plate heat exchanger pasteuriser from HTST requirements. HTST milk pasteurisation: 72 °C for 15 seconds — plate PHEs recover 90–95% of heat through regeneration, reducing energy cost by 10× vs single-pass heating.
Inputs
Q L Hr
Volume of fluid per unit time. Used to size pipes, pumps, and ducts.
Tin C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Tout C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Cp Kj Kgk
Energy to raise 1 kg of material by 1°C (J/kg·K). Water: 4,186 J/kg·K. Metals are typically 100–900 J/kg·K.
U Kw M2K
Reference formula or conversion factor shown for context.
Lmtd K
Reference formula or conversion factor shown for context.
Results
heat duty Q_heat (kW)
The value at the specified point or condition.
required heat transfer area A (m²)
Thermal energy moving from hot to cold. Rate depends on temperature difference, conductivity, and geometry (Fourier's Law for conduction; Newton's Law of Cooling for convection).
estimated plates (0.5 m² each)
The value at the specified point or condition.
Q = ṁ·cp·ΔT = U·A·LMTD
Reference formula or conversion factor shown for context.