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Chapter 3 Decision Support Model (IUWS-DSM) - Tubdok

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44 New Conception and <strong>Decision</strong> <strong>Support</strong> <strong>Model</strong> for <strong>IUWS</strong><br />

Table 17: Matrix for calculating cost and energy consumption of UD<br />

calculation of:<br />

1. costs<br />

2. energy<br />

no. system option<br />

1 Sys. Base<br />

1.1 external source (CA)<br />

1.2 + local source (UD)<br />

2 Sys. +Rainwater<br />

2.1 + roof-water (WUU)<br />

[1] 2.2 + local source (UD)<br />

+ surface runoff (UD)<br />

2.3 + local source (UD)<br />

+ surface runoff (UD)<br />

+ roof-water (WUU)<br />

3 Sys. +Reuse<br />

3.1 + indirect potable (UD)<br />

3.2 + direct non-potable (UD)<br />

3.3 + direct non-potable<br />

(WUU)<br />

[2] 4 Sys. +Both<br />

4.1<br />

(2.3+<br />

3.1)<br />

4.2<br />

(2.3+<br />

3.2)<br />

4.3<br />

(2.3+<br />

3.3)<br />

+ local source (UD)<br />

+ surface runoff (UD)<br />

+ roof-water (WUU)<br />

+ indirect potable (UD)<br />

+ local source (UD)<br />

+ surface runoff (UD)<br />

+ roof-water (WUU)<br />

+ direct non-potable (UD)<br />

+ local source (UD)<br />

+ surface runoff (UD)<br />

+ roof-water (WUU)<br />

+ direct non-potable<br />

(WUU)<br />

system size<br />

[m 3 /d]<br />

abstraction &<br />

transmission<br />

raw water<br />

treatment<br />

distribution<br />

(networks)<br />

collection<br />

(sewer + drain)<br />

used water<br />

treatment<br />

rainwater<br />

(surface runoff)<br />

- i. ii. iii. iv. v. vi. -<br />

[1]<br />

when surface runoff is considered as local water sources, the other types of local sources are<br />

automatically taken into account.<br />

[2]<br />

there are more possibilities of combination. However, if such complicated options are considered, it<br />

means that the water is very scarce, whereby only these three extreme options are involved.<br />

Explanation: as the exemplar, the table is blank. During the calculation, two tables are generated for<br />

system cost and energy consumption each.<br />

summation

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