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Unformatted text preview: Emmoms ‘ asihiuaué'g‘n‘éeﬁﬁﬁ i3 £:;i‘;L: ;=..1_‘jzﬂu,_, H V m: \ HT": I F 2(13 #3! CS) RUTGERS. raters? estate Multiple Choice (4 points each) 1. Power source A, follows the market penetration rule from 1985 to 2015 . The coefﬁcients for
.a and b are: a = 0048 and 5:94. Determine the fraction of source A, fA, that is taken by the
market in 1993: ' b. 0.1692
0. 0.1556 c1. none of the above 2. Power source B, follows the market penetration rule, wherein the fraction of the market
supplied by source B in 1990 was 0.01, and in 2000 was 0.0625. Determine the fraction of
source B, f3, that was taken by the market in 19.9.9.3, , _. a. 0.0682
b. 0.0567 (:1. none of the above 3. Base load plants
' a. Usuall reduce 80% of the maximum load during the year. e. I“Canizétislljr‘andinexpensively'vw output. d. Are the most efﬁcient when operated at lessthan full output 4. Peak load plants
a. Operate 10—15% of the time. b. Are very expensive to operate in comparison to base load plants. 0. Can include fuel cell, wind and solar technologies. d. A and a "V. f A. '.' ("ﬂV
ﬁcﬁoelgof énglﬁ‘eenng ‘ 5. A deviCe has voltage and current requirements that correspond to those presented in Figure 1. _
Thus, the amount of energytgequired by‘zthis device is: I a. 0.50 Wh
b. 0.55 d. ndne of the above Voltage(VI 5.0 ﬂ 3.5 0
It '2 " u , '50 . . @320
: .. ,~ ; t r Tl'mebec) ,   . .tftzrteﬁil'mAF  40!]
3'00
200'
‘ 0 6, 1‘ ‘ 120 _
Time(sec)
Figure]. 6. The dimensions and velocity vectors fete/Rump tasexptoyided.inthe Table l ;and Figure ‘2'
respectively. The pump is driven at 750 RPM and has a ﬂow rate of 0.75 Ins/sec. Table 1 ‘ . ‘. x5 Figure 2 ‘ The radial component of the velocity at the inlet, le is equal to: ‘ a. 15.587 III/s . ‘0. 13.642 m/s‘ 0. 11.856 m/s (1. none of the above 7. Thevelocity componentsjfor a turbo machine are provided in Figure 3. The geometry for the
turbo machine is as. follows: Outer radius, n): 300 mm, Inner radius? :2 =_ 150 mm, Flow rate = Q
: 3 m3/s, Density of water, p = 1000 kg/m3 and Rotation rate =. to E 25 Radfsec. Vﬁ 3 3' W3 30a Vyz e: Wﬁ I E Figure 3 The absoluteinletveiioertywi oftheitarbo==niachiﬁé135(3anhis; ‘ ‘ ‘ a)9.650m/s ‘ = ' " b).6.5‘87 m/s v C)*~8;078~ml,§;nj
' "d5"91,.0"75'"rfifs'i'. ' " Schoo! of Enginéeﬁng Problem 2 points) A two bl‘adqdéllgé‘ggh speed, wind turbine has a rotor diameter of The density of air is 1.2 I
kgl'lrniﬂ IUse ﬁdﬁinformation proﬁcied imFigu're 3 tosup‘port your oalcuiations, and assume the _
advance ratio is equal to ‘1 1, and the wind speed is 8 mfs. ' ' 0.? (165  . Eemumit, L H ' ", " ;I“;«___P__m"_é_w I ' V ‘19"  i  . ,3 Giauertldeal I  V . . A 1
_ 0.5.. _E , . . mmﬂawgh SPW
0.435 e .7. '  _ a V _ I ‘ I H ’,Fv""" , .. .1 “gm g. ' _f.twaﬂadeﬂatrtaus..ni___.‘ my; _ .. . ,. .A _. ,
1* American ibiultiihlatle
ms; “statmam ~ 7 Deer=2 s at s .e r, s 91'0'112 13 14 '15 15 F Advance mama,tipepaedﬁama‘spaad ‘ 7 Determine the following:  rm {‘3 m 2” i ~ W \\ {5‘23} ~ haste???) a. The power provied by wind, Pwindv‘ mu *3 2 \ : L ‘ I. b. The maximum available power that can be provided assuming Betz limit, Pmax. : e, ",3; 1:446aammwmanaemiatienay; c. The reasonable power provided by a two blade, high speed, wind turbine, Preasonable. i \Z. ~; ., w ﬂ iii1. f3: .   .  ‘ ,J I.  3.. {l i 7 Is ix: 1 .. ‘ IA 7.
. entugbigig ‘S>:¥I1ied'h;£§ “1.1.1103 Ag}; awmm : VJ (£83598 ’3 . ‘5‘ E:
at‘ W11 erv1ce 25,0 omes. aod’ home will require 3 kW of power. How many wind turbines are required to service this _ I. m I \II I ‘é “‘J . g. The Iiyil‘ll'haye spacinjgegf 2.5 [rotor to the " A The total area available for the ‘Wind farmvis 2.0 e7 is the turbinespacjng paraﬂa to 1
the wind?  _ new = ' 2 we :7
' @9000? ’ ' barge 3.. Problem 2 (40 pois'éii A hydroelectric facilityextracts power from a reservoir at an elevation of 815 meters, '
discharging into a tailrace at an elevation of 200 meters. The system has a penstock that is 1500
meters long and 0.65 meters in diameter. The minor losses are Km3 and C=1200, and the roughness, 8 = 0.046 mm for a commercial pipe. Assume the dynamic viscosity of water is
1.14e3 N—s/mz, the ﬂow rate, Q is equal to 2 m3/s, and the density of water is 1000 kg/rns. a) Determine the output power extracted by the turbine if the turbine efﬁciency is eoual to 0.95. [3* g‘: t o ’“it 7" D? o) H RUTGERS. =":; Iﬁéhéélﬁfﬁbélﬁeﬁfﬁs . L 2% X 5 . c) If the customary (dimensionallpowerspéciﬁc speed, NGust '=_' 100, determine the Speed, 50,111 RPM; RUTGERS School of Engineering MAE 1'4:e50:474 Alternative Energy Systems d) If the whine rotor radius at the inlet is 1.75 meters and the blade height is 0.45 meters, determine the
radial component of the absolute velocity. r‘  :: new tn 2 outs“ \fms: Q ﬁesk :3 00"} 4 It em 2 ti UPemXoesm ...
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 Spring '11
 COOK
 Velocity, Wind turbine, market penetration rule, load plants

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