2.15. Series/passes


In case of a thermal application where with very small mass flow a big temperature difference shall be reached at small logarithmic temperature difference, you have the possibility to reverse the media in the heat exchanger in order to keep them in the heat exchanger in several passes for a longer time.

For this you can change the number of series (passes). Series/passes stand for the number of parallel gaps, arranged in series. (multi-pass design)

You can choose if to calculate up to a max number of series (Max), with a min. number of series (Min) or a fix number of series (Fix). If you do not choose anything, always the mode fix number of series/passes (Fix) is preselected.

Only multi-pass units with same number of series/passes (symmetrical multi-passes) on hot side and cold side can be calculated.