How is this cooling capacity calculated?
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For methanol distillation, the temperature at the top of the tower is around 64°C, with a reflux ratio of 3. 1.3 tons of methanol product are produced per hour. There are three stages of condensation: the first two stages use circulating water for condensation, and an additional stage uses chilled water for condensation. The heat exchange area of the circulating water condenser is 50 m2, while that of the chilled water condenser is 10 m2. The temperature of the water used in the chilled water condenser is around 7°C. I would like to know how to calculate the cooling capacity required for the chilled water condensation process You can ask what other conditions are needed. This post was last edited by wgh26 on 2009-4-16 14:15]
The conditions are not complete; to determine the heat load, it is necessary to know the temperatures of the hot and cold streams of chilled water, and the cooling capacity can be calculated based on the temperature rise of the cold water
To calculate the heat load, it is also necessary to know the temperature of the product after cooling with circulating water and the final temperature of the product; Q = M × Cp × (T_in – T_out)
An approximate calculation will suffice; additionally, increase it by about 10%~20%.
Dear brothers and sisters, please read the question carefully: it’s about three-stage condensation, but only the cooling capacity of the third stage is required. How should the cooling capacities of the three stages be divided?