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12 Job No. 2669.01 Water Systems Alternative Energy Feasibility Study <br />In the evaluation of hydro turbines to make electricity from the excess pressure, this suggests that the efficiency <br />at this design flow is important, but the partial flow efficiency is not critical. <br />The monetary benefits for this project will be calculated according to the SCE rate schedules that are used for <br />each account. When a unit operated, say 23% of the hours in a month, it will be assumed that this implies it <br />operates 23% of the On Peak hours, 23% of the Mid Peak hours and 23% of the Off Peak hours. A demand <br />savings for a given month is only be included if the unit operates at least 95% of the hours that month to keep <br />the savings fairly conservative. <br />The historical flow data is converted into anticipated full load operating hours per month for each MWD <br />connection in the following table. <br />calculated operating Hours <br />Operating Capacity <br />MWD SA -1 <br />Connection <br />per Month <br />SA -2 <br />at Normal <br />SA -3 SA -4 <br />SA -5 <br />- <br />SA -7 <br />Total <br />SA -6 <br />Jan -17 <br />0 <br />- <br />0 <br />SA -5 <br />56 <br />89 <br />145 <br />Feb -17 <br />157 <br />- <br />83 <br />3% <br />323 <br />307 <br />870 <br />Mar -17 <br />186 <br />- <br />199 <br />383 <br />- <br />768 <br />Apr -17 <br />678 <br />- <br />228 <br />586 <br />126 <br />1,619 <br />May -17 <br />726 <br />- <br />321 <br />497 <br />- <br />1,544 <br />Jun -17 <br />495 <br />- <br />319 <br />502 <br />173 <br />1,489 <br />Jul -17 <br />746 <br />- <br />350 <br />497 <br />- <br />1,593 <br />Aug -17 <br />745 <br />- <br />267 320 <br />- <br />616 <br />- <br />1,948 <br />Sep -17 <br />721 <br />- <br />338 617 <br />- <br />730 <br />1 5 <br />2,410 <br />Oct -17 <br />734 <br />- <br />606 417 <br />- <br />750 <br />11 <br />2,517 <br />Nov -17 <br />713 <br />- <br />673 <br />- <br />481 <br />- <br />1,867 <br />Dec -17 <br />745 <br />- <br />684 - <br />- <br />495 <br />- <br />1,924 <br />Total <br />6,645 <br />- <br />4,068 1,353 <br />- <br />5,915 <br />712 <br />The following table shows the total water flow in 2017 by connection point. Note that three connection points, <br />SA -1, SA -3 and SA -6 represent 91% of all the MWD flow for the year. These three stations will be investigated <br />for the potential to generate power from this water flow. <br />IMWD Connection <br />SA -1 <br />2017 Cubic Feet per Year <br />191,384,600 <br />Percent of MWD Flow <br />31% <br />SA -2 <br />- <br />0% <br />SA -3 <br />117,157,800 <br />19% <br />SA -4 <br />36,531,300 <br />6% <br />SA -5 <br />- <br />0% <br />SA -6 <br />255,544,800 <br />41% <br />SA -7 <br />19,225,600 <br />3% <br />Total <br />619,844,100 <br />100% <br />CITY OF SANTA ANA 19H-20 Newcomb I Anderson I McCormick <br />