Condenser design issues
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Is the temperature of the condensate formed during the design of the condenser slightly lower than the bubble point temperature? Is it possible to further cool the condensate temperature to room temperature? Could it happen that, after condensation, the condensate separates from the walls of the heat exchange tubes, preventing the condensate temperature from dropping further? For example, when condensing water vapor at 150°C to below 40°C, will a horizontal heat exchanger work? Is it possible that the condensate, still at a temperature close to the bubble point, leaves the tube wall directly and thus cannot be cooled? Please, an expert, help me understand this
The key is your cooling water temperature and flow rate……
Theoretically, it is possible; however, if it is truly necessary, it might be better to use two sets of heat exchangers in series. You can use the HTRI software to calculate the performance under your specific conditions
When the cooling water temperature is no higher than 32–33 degrees and the proportion of non-condensable gases is not high, a properly designed condenser can ensure that the temperature of the condensate remains below 40 degrees!
It mainly depends on the temperature of the cooling medium and whether there is non-condensable gas.
Condensation cooling is usually carried out in two series-connected heat exchangers.
Is the temperature of the condensate formed during the design of the condenser slightly lower than the bubble point temperature? Yes. Is it possible to further cool the condensate temperature to room temperature? This depends on the temperature and flow rate of the refrigerant. Could it happen that, after condensation, the condensate separates from the walls of the heat exchange tubes, preventing the condensate temperature from dropping? Yes, it is usually caused by insufficient margin in the heat exchange design. For example, when condensing water vapor at 150°C to below 40°C, will a horizontal heat exchanger work? A vertical design might be better. Is it possible that the condensate, still at a temperature close to its boiling point, leaves the tube wall directly and thus cannot be cooled? If there is sufficient heat exchange margin and the refrigerant shows no abnormalities, this phenomenon will not occur
It can’t be achieved… Read more books on heat transfer
Don’t worry, it has been achieved; I’ve actually used it many times!