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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Resour Conserv Recycl. 2019;146:536–548. doi: 10.1016/j.resconrec.2019.01.043

Table 2.

Scenario description of the RWH and ACH systems in 4-story and 19-story commercial buildings in Washington (DC) and San Francisco (SF), with major component parameters: DC4RWH = DC 4-story RWH system; DC4ACH = DC 4-story ACH system; SF4RWH = SF 4-story RWH system; SF4ACH = SF 4-story ACH system; SF19RWH = SF 19-story RWH system; DC4RWH + ACH = DC 4-story RWH + ACH system; SF4RWH + ACH = SF 4-story RWH + ACH system; SF19RWH + ACH = SF 19-story RWH + ACH system.

Parameters Unit DC4RWH DC4 ACH DC4 RWH + ACH SF4 RWH SF4 ACH SF4 RWH + ACH SF19 RWH SF19 ACH SF19 RWH + ACH
Volumetric water supply m3/y 2,043 551 2,594 770 219 989 786 2,394 3,180
Storage tank mass kg 2,773 1,678 4,451 2,335 657 2,992 2,371 3,247 5,618
PVC pipe length m 61 61 122 61 61 122 290 290 580
CPVC pipe length m 152 152 152 152 152 152 722 722 722
Pumping energy kWh/m3 0.19 0.19 0.19 0.19 0.19 0.19 0.46 0.46 0.46
Storage tank volume m3 76 46 122 64 18 82 65 89 154
% Demand met % 77 21 98 29 8 37 6 19 25
Storage tank mass intensity kg/m3 68 152 86 152 150 151 151 68 88