QvaaP mw hg1524

The rate of exergy transfer due to evaporation of the dryer was (Syahrul et al., 2002)

evap

Tm 2

Heat transfer rate to the environment was (Syahrul et al., 2002)

QIoss = Qevap - m 1 (hm 2 - hmx) + m da (hda1 - hda 2 ) (15.26)

The following equation was used to calculate the rate of exergy loss to the surrounding, where Tb is the boundary temperature (Syahrul et al., 2002):

Exioss =

V 1b

The exergy efficiency of the dryer can be defined as the ratio of the product exergy to exergy inflow for the chamber. Thus, the general form of exergy efficiency was written as

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