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What are the heat exchange calculation formulas?

2009-02-24View Original

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Cool the 100-degree cyclohexane vapor to a 25-degree cyclohexane solution, using water for cooling. What are the main heat transfer calculation formulas?
Reply #22009-02-24
For your case, approximate values can be obtained by using simple specific heat and temperature difference calculations.
Reply #32009-02-24
Total heat supplied = specific heat of gas * temperature difference + heat of phase change + specific heat of liquid * temperature difference; Total heat dissipation = specific heat of water * temperature difference ; Total heat input = Total heat loss. The specific heats and phase transition heats can be obtained from tables ; The empirical value for the temperature difference range of water is around 10 degrees.
Reply #42009-02-27
Q = K A (T1 — T2) Q: Total heat transfer amount; K: Overall heat transfer coefficient; A: Heat exchange area; T1–T2: Temperature difference between the two sides
Reply #52009-03-10
Hehe, isn’t it written a bit too simply?
Reply #62014-07-05
Q=CM(t1-t2)
Reply #72014-07-10
Q = C * M * Δt, where C is the specific heat, M is the mass, and Δt is the temperature difference between the initial and final states

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