aspen EDR tubular heat exchanger
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Dear sea friends, a few days ago I used an Aspen EDR tubular heat exchanger to calculate a scheme for the condensation of methanol gas； The situation is as follows: the condensation temperature of methanol gas at 2 KPa is 65.7°C. Now, the customer needs to reduce the temperature on the methanol side from 70°C to around 38°C, with a flow rate of 2 tons per hour for the methanol gas ； The flow rate on the cooling water side is sufficient, with an inlet temperature of 31°C; the temperature on the methanol side needs to be reduced to 38°C, which means there is a so-called \"hydrophobic cooling section\". The structure designed for EDR software is horizontal. Due to the low flow rate of methanol, it actually escapes through the gap between the baffle and the shell. In other words, once methanol condenses, it moves to the bottom of the heat exchanger, and the so-called \"hydrophobic cooling section\" no longer exists; thus, it matters not how large the surface area of the heat exchanger is. I would like to ask the experts here: is my understanding correct?
The term \"hydrophobic cooling section\" is used in the high-pressure heaters of power plants. In your case, since the equipment size is small, it is not recommended to incorporate a hydrophobic cooling section; perhaps considering using two separate heat exchangers would be an option? One unit is for pure condensation, while the other is a heat exchanger for the condensate and water.
With such a small amount of cooling required, it should be quite simple:lol