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7.3.5 - Air Requirement

a) Regeneration air quantity
In order to determine the quantity Vrh, by means of the heat allowance, the heat content cdr and also the heat quantity qdr of the desiccant has to be inserted into Formula 7.3.5.1. The equation firstly determines the regeneration air quantity for themoisture load first part, and secondly without moisture load. The valid values for heat quantity qdr = 31.0 kcal/m3 and heat capacity cdr = 0.31 kcal/m3°C.


Formula 7.3.5.1

b) Cooling air quantity


Formula 7.3.5.2

For the cooling air quantity Vrc, the energy requirement Qc, the difference in temperature and the heat content cdr are taken into account.


Formula 7.3.5.3

Given a regeneration period tr, regeneration air quantity Vrh and cooling air quantity Vrc, the total air volume Vt.