Table 4 Economic study results:
Parameters | ISS | ISS with flannel | ISS with cotton | ISS with coconut coir | ISS with jute | ISS with polypropylene |
|---|---|---|---|---|---|---|
Yield per day (m) | 3.30 | 4.18 | 4.10 | 4.32 | 3.94 | 3.81 |
Annual yield (M) | 990.90 | 1253.10 | 1230.30 | 1296.90 | 1180.80 | 1143.00 |
Capital cost (C) | $115.00 | $116.00 | $117.00 | $117.00 | $116.00 | $116.00 |
Interest per year (i) | 10% | |||||
Life span (n) | 15 years | |||||
Capital recovery factor (CRF) | 0.13 | |||||
Fixed annucal cost (FAC) | 15.12 | 15.25 | 15.38 | 15.38 | 15.25 | 15.25 |
Sink fund factor (SFF) | 0.03 | |||||
Salvage value (SV) | 23.00 | 23.20 | 23.40 | 23.40 | 23.20 | 23.20 |
Annual salvage value (ASV) | 0.72 | 0.73 | 0.74 | 0.74 | 0.73 | 0.73 |
Annual maintenance (AMC) | 2.27 | 2.29 | 2.31 | 2.31 | 2.29 | 2.29 |
Annual cost (AC) | 16.66 | 16.81 | 16.95 | 16.95 | 16.81 | 16.81 |
Cost of distilled water production per liter (CPL) | $0.0168 | $0.0134 | $0.0138 | $0.0131 | $0.0142 | $0.0147 |
Selling price (SP) | $0.24 | |||||
Payback period (in months) | 6.2 | 5.0 | 5.1 | 4.8 | 5.3 | 5.4 |
