Table 8 Economic analysis of the DDSD integrated with photovoltaic system.

From: Mathematical modeling, drying kinetics, and economic analysis of a hybrid photovoltaic thermal solar dryer for henna leaves

Economic parameters

Layer thickness

6 cm

4 cm

2 cm

Mass per batch, kg

9

6

3

Annually dried quantity of Henna leaves, kg/year

2700

1800

900

Cost of fresh Henna leaves, USD/kg

2.0

2.0

2.0

Selling price per, $/kg

7.2

7.2

7.2

Saving after one year, $

3348

2232

1116

Payback time, Years

0.077

0.115

0.228

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