How to calculate the heat input of a heat exchanger
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How to calculate the heat input of a heat exchanger
Q = ΔT * F * K
Q = G * Cp * (T1 – T2)
Q: Heat transfer amount, in W
ΔT: Logarithmic temperature difference, in °C
F: Heat transfer area, in m2
K: Heat transfer coefficient, in W/(m2*°C)
G: Mass flow rate of the material, in Kg/s
Cp: Specific heat capacity of the material, in KJ/(Kg*°C)
T1: Temperature of the material at the inlet, in °C
T2: Temperature of the material at the outlet, in °C
The above formulas can be used for calculation
Q = G * Cp * (T1 – T2)
Q: Heat transfer amount, in W
ΔT: Logarithmic temperature difference, in °C
F: Heat transfer area, in m2
K: Heat transfer coefficient, in W/(m2*°C)
G: Mass flow rate of the material, in Kg/s
Cp: Specific heat capacity of the material, in KJ/(Kg*°C)
T1: Temperature of the material at the inlet, in °C
T2: Temperature of the material at the outlet, in °C
The above formulas can be used for calculation
Learn ASPEN or PROII by yourself; you can use the simplest HTEAR model for calculations
It can also be calculated using the following formula: The heat transfer amount dQ that passes through a small surface area dA per unit of time can be expressed as follows: dQ = Kw/b(t1-t2)dA. dQ: Heat transfer amount； Kw: Thermal conductivity, which is dependent on the material ； b: Wall panel thickness ； t1, t2: Temperatures of the two sides ； dA: Wall panel area.
Hello, where can I find the parameters for this formula?
These should all be the basic parameters for process calculations