Heat exchanger calculation
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The heat exchange area calculated using HTRI is 20, with a margin of 70%. After calculations for the equipment, it was determined that the heat exchange area is only 15; it is suggested to increase the length of the heat exchanger. Is the actual heat exchange area required equal to 20/1.7 = 11.7? In that case, wouldn’t that be sufficient?
If you don’t include a margin based on the actual area, it will definitely not be sufficient. The size of this margin can be determined depending on the material involved in heat exchange; for reboilers heated by steam, a margin of around 30% is sufficient, while for those used for heat exchange with circulating water or other materials, a larger margin is needed
The area is sufficient, but has the equipment taken into account a difference of 5 square units? This is way too much, isn’t it?