Project life, 221-23, 226
Propeller
turbines, 1
adjustable blade, 18-19. 53
asial-flow, 18-21, 35
description, 18-21
dianietcr, 52
draft
tube, 143-45
efficiency, 53
fixed-blade, 18-19, 53, 90, 118
flow
velocity,
36
limits of use, 89-90
Kaplan,
18-19.89, 108
-
microhydro, 283, 286, 288-91
settlng, 108, 111, 113, 115
specific
speed, 50
Pumpedhtorage, 6-7, 256-79
application situations, 258
arratlgernent of units, 259-64
basic concepts,
256-57.
energy load variarion, 258
pl:inning il~lci selection, 264-78
Punips used as turbines, 291, 293-94
perfortnance cl~aracteristics, 293
.
Puiiip,lt~crbi~irs, 259-79
espcrience curves, 266, 269, 271-73,
275-78
tnulti-stage. 259-60, 263
pl3111lir~: :~nd selection, 264-78
sciting, 276-78
s1r1;le-stage, 2596 1, 263
specific speed, 267
storage, 264-65
Q
Quick chart, 176-77
R
1t;idius of gyration, 193
R;tini~ll (see
Precipitation)
Rank-orcirrcd tccl~nique. 60, 71
Riltc-of-return (ROR), 225-25
comparison. 221, 225-28
incremental
(&OR), 228
Reacrance, 153-55
Reacrion turbines, 1,
12,
16-21, 33-36
Recon~~;~issa~ice (preliminary) studies, 57,
58.91
~ecrcntibn considerations, 299, 301
Rcsi.r\oir operation, 75, 77
Resistonce, 153-55
Rcynolds num ber, 49
Rim-generator turbine, 21. 89
Roads. access, 214
Rotor, 151, 156-58
Rulc
curves, 75-77
Runa\r*ay speed, 178, 185-86
Runner,
11, 30-31, 33
blncle. 35, 115
Index
diameter, 33, 115
radius, 34
speed, 34-35
Runoff, 69.70-71
average annual,
61,63-64,66-70
monthly, 70
Run-of-river plants, 6, 71, 91
S
Safety:
.
dams, 78
electrical, 161-62
margin of, 110, 114, 117, 119
'
Salvage value, 221-25
Schneider,
D.
I.,
21-22
Schneider power generator, 21-22
Scobey's equation.
125
Selection:
of capacity,
92,94,96, 109
~ll~t, 87-89, 284, 286, 290-92
check list, 86
economic, 90-91
number of units, 90
procedures, 92
rurbine setting. 109-20
.
of turbine type, 89-90
Semi-spiral
cdscs, 129, 13 1, 137-38
Sequential
flow ;tn;ilysis, 69, 74-75, 96
Servomotor, 187-89
Siinilnrity laws. 38-49
Sinple.pa~'rnen1 compound-amount fgctor,
219
Single-poylnel~r present-worth factor, 219
Single purpose
developn~ents, 7
Sinking fund factor, 219-20
Size selection:
draft tubes, 140-46
penstocks, 127-28
turbines, 51-53
water passage dimensions, 129-46
Sm:iIl-scale hydropower, 2, 8
(see
also
Microhydro systems)
Specihc speed, 49, 51
definition, 42
dimensionless, 4243,4546, 268
equation
developn~ent, 41-46
experience curve,
50
pumps, 266-68, 270-74
relation to diameter, 51-54
relation to turbine setting.
109-11, 113,
119
relation to water velocity, 133-34,
I
136-39
table of equations, 44-45
use, 53-54,113-14,277
Spccific weigllt of water, 27, 102, 104
Speed, 50-5 1
best turbine, 32
Index
control (regulation), 186-98
droop, 190-91
generator, 87
increaser, 284
linear, 39
ratio, 31, 38-39,44,48,115-17
rotating, 39,42,47
rotational, 50, 186
runner. 34-35, 39, 50, 97, 133
synchronous, 50-51.54, 113,271
terminology, 185-86
turbine, 50,97.119-20,146,
I
8s
unit, 38-39,44, 91, 267
Spillway, 75, 78
Spiral cases, 101, 129-40
concrete, 129, 13 7-38
dimensions,
13140
impulse turbines, 131-33
steel, 129-38
(see also Semi-spiral cases)
Stator, 150-51,155,158,i60
Stochastic flow, 71
Storage,
6-7, 7~~77, 264-65
Storage regulation developments,
6
STRAFLO turbine, 21
Strea~nnow (see Discharge, flow)
Surge tank, 178-79, 181-83
differential, 179-80
restricted-orifice,
179, 184-85
simple, 179-82
theory, 180-85
Surplus power (!ee Dump power)
Switchgear, 161-6 2, 210
T
Tailrace. 57
Tailwater
(T.W.),
11, 24, 29, 55.57, 73, 75,
91,115, 117,140
curve,
75-76.91
minimum, 105,111-12.115
normal, 105, 11 2
Taxes, 232
Temperature, 59,
112
Thermal-electric alternative, 233-35, 244
Tidal power developments, 7
Time, starting, 194-97
Torque,
31,33,44-45
equation, 31
TUBE turbines, 20, 87-88
Tubular-type turbines, 20, 89,
140
microhydro, 283, 290, 292
powcrhousc, 207
.
Turbine:
blade, 35
constants, 3 8-54
efficiency (see Efficiency, turbine)
manufacturers, 312-13
output, 51
selection, 85-98
setting, 75, 85, 87.97, 106, 108-20
size selection, 5 1-53
types, limits of use, 89-90
Turbine types (see individual listings)
adjustable blade, 18-19,
53
axial flow, 18-21.35
Banki. 15
.
,
--
cross-flow, IS, 89
Deriaz, 16, 18-19, 53
fixed
bladc, 18-1 9, 53,
Fourneyron, 16
Francis, 16-19
hydraulic,
1
I
impulse,
1
Kaplan, 18-1 9
Michell, IS
mixed now, 16
Pelton,
1
propeller, 1
reaction, l,12, 16-21, 33-36
rim-genera tor,
21,
89
Schneider power generator, 21-22
STRAFLO, 21
TUBE,
20, 87-88
tubular-type, 20, 89, 140
Turgo impulse, 14
TUQO impulse turbine, 1.r
U
Underground powerhouses, 207-8
Uniform-annual series factor, 219
U"iform-gradient series factor, 220
UnifO~-seties present-worth factor, 220
Unit discharge, 404 1,44, 91, 106, 267
Unit power, 41-42,45, 47-48,106,115-17
Units, num ber of, 90-91
Units of measure, 39-40
Unit speed, 38-39,44, 91, 267
Upsurge, 180, 183-84
U-S.
Government agencies, 58-5g,3 14-17
(see
Federal,
U.S.)
,
Utilities: cooperatives, 24 9-5 1
investor owned, 232, 250-52
municipal, 249-5 1
Valves, 164-65, 168-69, 172,178, 183
cIosure time, 171
inlet,
IS
needle, 178
pilot, 188-89
relief, 178
VWor pressure, 101, 105-6, 111-12
Vars (volt-amperes), 155,
157