BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

More documents

Recommendations

Info

194 Aurora Alexandrescu et al. Fig. 2 – Diagram for the functional parameters of the CUG Iaşi pumping station: conductivity, chlorine, pressure, flow and turbulence for the perioad 5.07.2009 – 6.07.2009. AIc ( D ) AP ( k , Q , D ) A( k, Q , D ) 1000 900 800 700 600 500 400 300 200 100 0.3 0.4 0.5 0.6 0.7 0.8 Fig. 3 – The variation of annual cost associated to the investment in pipes AIc, annual total cost AP for pumping and the annual average cost associated to the investments A, depending on diameter D for the CUG pumping station. The results of the data working relative at either sector of the system, effectuated with MathCAD program, adequate to the supply with power under average and low tension are systematized in Fig. 3. It is present the variation of the following parameters: AIc – annual cost associated to the investment in D
Bul. Inst. Polit. Iaşi, t. LVI (LX), f. 2, 2010 195 pipes, AP – annual total cost for pumping and A - the annual average cost associated to the investments in the usage’s conditions of the following parameters: ac = 0,075; a = 6000; α = 2; k – pipe’s equivalent absolute rugosity = 0,8 mm; Kj = 0,00145; γ = 2; β = 5,143+0,131.k; ηp = 72 %; T = 6200 hours/year; αp = 0,46; Ipo = 65; Q = 0,15 m 3 /s; D = 0,3; 0,4; ...; 0,6 m. 4. Conclusions 1. It comes out that chlorine and ammonium concentrations grow up in the maximum consumption period of network: Cl = (1,1 ÷ 2,89) [mg/l] and Am = (42,55 ÷ 43,31) [mg/l]. In the same time, pressure and debit grow up because to the increase of the active consumers number in the network: p = (3,01 ÷ 4,09) [bar] and Q = (0 ÷ 1650,74) [m 3 /h]. 2. The water turbidity grows up at (0,49 ÷ 0,59) FNU values on starting and stop period for each pumps. In short time from the starting and stop moment, the turbidity declines at (0,26 ÷ 0,30) FNU values. The water’s conductivity is constant (0,53 ÷ 0,54) [mS/cm]. 3. The flow and load variation from hydraulic system influence the water quality and the substances quantity imperative for the drinkable water treatment: in the analyse period 1.05.2009, 00:00 hour and 15.05.2009, 23:55 hour, maximum chlorine is Clmax = 3,94 [mg/l] in 7.05.2009 day, 3:45 hour; at same moment the hydraulics system has the following parameters: Tb = 0,42 FNU turbidity, Q = 0,121 [m 3 /s] flow, H = 69,34 [m] load, Cv = 0,51 [mS/cm] conductivity. The minimum chlorine is Clmin = 1,1 [mg/l] in 3,05.2009 day, 3:35 hour; the parameters of the CUG pumping station at same moment are: 3:35 turbidity, Q = 0 [m 3 /s] flow, H = 64,344 [m] load, Cv = 0,52 [mS/cm] conductivity. Acknowledgements. This work has been supported by the National Centre of Management Programmers, Romania, under financial contract No. 21-041/2007. Received: February 25, 2010 “Gh. Asachi”Technical University, Department of Fluid Mechanics, Machines and Hydraulic Acting, Iasi, Romania, e-mail: auralexis@yahoo.com R E F E R E N C E S 1. A l e x a n d r e s c u A., Statii de pompare, Ed. Politehnium, Iasi, 2008. 2. A l e x a n d r e s c u A., Masini si echipamente hidraulice, Ed. Politehnium, Iasi, 2008.
Page 1:
BULETINUL INSTITUTULUI POLITEHNIC D
Page 5:
Papers presented at THE INTERNATION
Page 8 and 9:
SILVIU BERBINSCHI, VIRGIL TEODOR, N
Page 10 and 11:
Page 12 and 13:
CONSTANTIN CHIRIȚĂ, ADRIAN HANGAN
Page 15 and 16:
Page 17 and 18:
Bul. Inst. Polit. Iaşi, t. LVI (LX
Page 19 and 20:
(6) ⎧ ⎪ ⎨ ⎪ ⎩⎪ FR 1 FR
Page 21:
Page 24 and 25:
10 Taxiarchis Belis and Aristomenis
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
22 Nikolaos Tapoglou and Aristomeni
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
32 Eugen Străjescu et al. The mode
Page 48 and 49:
34 Eugen Străjescu et al. On the o
Page 50 and 51:
36 Eugen Străjescu et al. 3.5 3 2.
Page 52 and 53:
38 Eugen Străjescu et al. 2.5 2 1.
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
(5) Bul. Inst. P olit. Iaşi, t. LV
Page 71 and 72:
Page 73 and 74:
p (4) g( ) (5) p g( ) Bul. Inst. Po
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
(5) Bul. Inst . Polit. Iaşi, t. LV
Page 83 and 84:
Page 85 and 86:
Page 87:
Page 90 and 91:
76 Ana-Maria Matei and Marius-Nicol
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
84 Marius Ionuţ Rîpanu et al. The
Page 100 and 101:
86 Marius Ionuţ Rîpanu et al. Fig
Page 102 and 103:
88 Marius Ionuţ Rîpanu et al. The
Page 104 and 105:
90 Marius Ionuţ Rîpanu et al. R E
Page 106 and 107:
92 Iustina Elena Rotman et al be co
Page 108 and 109:
94 Iustina Elena Rotman et al This
Page 110 and 111:
96 Iustina Elena Rotman et al 5. *
Page 112 and 113:
98 Cătălin Ungureanu et al. Devia
Page 114 and 115:
100 Cătălin Ungureanu et al. VI g
Page 116 and 117:
102 Cătălin Ungureanu et al. d [m
Page 118 and 119:
104 Cătălin Ungureanu et al. SIST
Page 120 and 121:
106 Birgit Kjærside Storm parts wi
Page 122 and 123:
108 Birgit Kjærside Storm They are
Page 124 and 125:
110 Birgit Kjærside Storm A fresh
Page 126 and 127:
112 Birgit Kjærside Storm rate of
Page 128 and 129:
114 Birgit Kjærside Storm The HSP
Page 130 and 131:
116 Birgit Kjærside Storm 4. P i z
Page 132 and 133:
118 Ioana Petre et al. The utilizat
Page 134 and 135:
120 Ioana Petre et al. by a pneumat
Page 136 and 137:
122 Ioana Petre et al. Another appl
Page 138 and 139:
124 Ioana Petre et al. APLICAŢII I
Page 140 and 141:
126 Mihăiță Horodincă absorbed
Page 142 and 143:
128 Mihăiță Horodincă 3. Some E
Page 144 and 145:
130 Mihăiță Horodincă For certa
Page 146 and 147:
132 Mihăiță Horodincă behaviour
Page 149 and 150:
Page 151 and 152:
As the planetary processional trans
Page 153 and 154:
Page 155 and 156:
Page 157 and 158: BULETINUL INSTITUTULUI POLITEHNIC D
Page 159 and 160: Bul. Inst. Polit. Iaşi, t. LVI (LX
Page 177 and 178: (4) Bul. Inst. Polit. Iaşi, t. LVI
Page 207: Bul. Inst. Polit. Iaşi, t. LVI (LX
Page 221 and 222: then, under the principle of optima
Page 225 and 226: c) Calculate values (14) ⎧V ⎪
Page 227: Bul. Inst. Polit. Iaşi, t. LVI (LX
Page 230 and 231: 216 Dănuț Zahariea and Mihaela Tu
Page 236 and 237: 222 Dănuț Zahariea and Marius Sta
Page 242 and 243: 228 Irène Alexandrescu et al. Glob
Page 244 and 245: 230 Irène Alexandrescu et al. 3. S
Page 246 and 247: 232 Irène Alexandrescu et al. The
Page 248 and 249: 234 Irène Alexandrescu et al. depa
Page 259 and 260:
Page 261 and 262:
Conventional approach Client specif
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Rate of recycling, [%] Bul. Inst. P
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Fig. 15 - Air velocity distribution
Page 289:
Page 292:
Stachie Marius 221 Storm Kjærside
show all

BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?