Chapter 5 - Publications, US Army Corps of Engineers

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EM 1110-2-1701 31 Dec 1985 t I I 1 1 1 1 r 1 I 1 1 I o~ c1 10 20 30 40 50 CAPACITY (MEGAWATTS) CASE2: RATED AT MAXIMUM HEAD RATING POINT) o 10 40 50 CAP::ITY (MEGAW3iTTS) Figure 5-9. Alternative rating points for a given Francis turbine design applied to a given storage project 5-22
~ CASE 3: RATED AT MINIMUM HEAD I //’ EM 1110-2-1701 31 Dec 1985 -—7 //--- /’ RATING POINT-. _-----’ /“ /“ /’ / // / / / / / / RATED CAPACITY, = ‘ (17.5 MW) / / / / / / ,~’ / / o~ f 1 I 1 1 1 1 t o 10 20 30 40 50 CAPACITY (MEGAWATTS) Figure 5-9 (continued) Figure 5-10 shows the unit characteristics as applied to Figure 5-8, including the turbine efficiencies obtained under various operating conditions. (6) Next, rating the unit at maximum head will be considered. The same turbine would be used, but in this case it will be rated to produce 49.5 megawatts at a head of 625 feet and a discharge of 1120 cfs. A 49.5 megawatt generator would also be specified (Case 2 on Figures 5-9 and 5-10). Rating the unit in this manner will insure that the turbinels full potential will be utilized, and that the maximum amount of energy can be produced. The additional energy production is realized because the unit is capable of greater output when high heads are accompanied by high discharges. However, this additional output is achieved at the expense of higher costs for the larger generator, transformer, and associated buswork and switchgear. In most cases, the amount of time a project would experience these combinations of high heads and high flows is too small to justify the additional costs, but this can be verified only through economic analysis. 5-23 /
Page 1 and 2: 5-1. CHAPTER 5 DETERMINING ENERGY P
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Page 5 and 6: EM 111O-2-17O1 31 Dec 1985 In this
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Page 15 and 16: (6) It is difficult to generalize a
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Page 41 and 42: 450 400 1 * I USABLEHYDRO ENERGYIN1
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Page 45 and 46: EM 1110-2-1701 31 Dec 1985 (1) Head
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Page 51 and 52: 1500 \ \ 1400 \ \ 1300 \ \ 1200 i 1
Page 53 and 54: 1500 1400 {n\ 1 ‘\ l\ 1300 / \ I
Page 55 and 56: 1. (1) releases Compute Dependable
Page 57 and 58: 1300 , I 1200 i I I 1100 1000 300 2
Page 59 and 60: EM 1110-2-1701 31 Dec 1985 Figure 5
Page 61 and 62: kW=—= QHe (400 - 20 cfs)(31 feet)
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EM 1110-2-1701 31 Dec 1985 b. Bata
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EM 1110-2-1701 31 Dec 1985 portion
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EM 111O-2-17O1 31 Dec 1985 make a p
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TABLE 5-5 Factors for Converting Di
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Routing Worksheet EM 1110-2-1701 31
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Explanation of Data in Table 5-6 EM
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EM 1110-2-1701 31 Dec 1985 In the s
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Equation 5-16 would be revised to t
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EM 1110-2-1701 31 Dec 1985 follow a
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EM 111O-2-17O1 31 Dec 1985 the rese
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EM 1110-2-1701 31 July 1985 power (
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EM 1110-2-1701 31 July 1985 except:
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EM 111O-2-17O1 31 Dec 1985 heavily
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EM 1110-2-1701 31 Dec 1985 energy.
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1st reservoir storage above EM 1110
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EM 1110-2-1701 31 Dec 1985 (4) Figu
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EM 1110-2-1701 31 Dec 1985 maintain
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EM 1110-2-1701 31 Dec 1985 (3) Tabl
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EM 1110-2-1701 31 Dec 1985 (3) In s
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EM 1110-2-1701 31 Dec 1985 The back
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Maximize Maximize firm energy 74,00
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EM 1110-2-1701 31 Dec 1985 (2) The
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MAXIMUM POWER POOL POWER GUIDE CURV
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EM 111O-2-17O1 31 Dec 1985 . to exa
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EM 1110-2-1701 31 Dec 1985 (3) If t
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EM 111O-2-17O1 31 Dec 1985 (3) ~ It
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EM 1110-2-1701 31 Dec 1985 QHet (18
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EM 1110-2-1701 31 Dec 1985 Figure 5
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EM 1110-2-1701 31 Dec 1985 assured
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EM 1110-2-1701 31 Dec 1985 ● a hi
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i. Coordination with Other Entities
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EM 1110-2-1701 31 Dec 1985 TABLE 5-
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40, 35 .00 .00 30.00 25.00 20.00 15
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Chapter 5 - Publications, US Army Corps of Engineers

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