Prediction of batch heat transfer coefficients for pseudoplastic fluids ...

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148 'tvas insufficient data to evalua.te these constant.s .. The value of C and a V'a:J!'Y with the impeller type and c .. Anchor 0 .. 74 1 .. 43 Paddle 2.00 1.96 Propeller 0.86 2.51 Turbine 3.09 2.06 5.. The above correlations predict the batch side heat transfer coefficient lNi thin + 20 percent :for all pO't
149 REe Ol'ifHENDAT IONS 1.. The correlations given in the Conclusions should be used ror the prediction or batch heat transfer coefficients provided the situation has been covered by the range of variables stUdied. 2. A thorough study should be made regarding the variations or local heat tr~nsrer rate and the variables arfectLng the same .. 3. The range or the present study should be extended to include unbarrled vessels and systems using coils as the heat transrer surrace ..
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Copyright Warning & Restrictions Th
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PREDICTION OF BATCH HEAT TRANSFER C
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while the latter has five to seven
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ACKNOWLEDGEMENTS The auther ex~ress
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Chapter 1: Chapter 2: Introducticm
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LIST OF FIGURES page 2-1 FlGW Behav
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CHAPTER I INTRODUCTION BATCH HEAT T
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3 as pseudoplasticso Pseudoplastic
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5 ~n addition to studying the effec
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7 A B SLOPE = /'n- .( 10 ~y FIG 2-1
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15.5, 183, 185).. Most of their eff
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va:ry withl. the slaear I'Rte.. 11.
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13 RHEOLOGIC_~ INVESTIGATION OFPO~~
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IS In(s) (2-8 (2-9 where Re is the
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'7 ft~ easier method of calibrating
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19 of' thixotropic breakdown l'Ji t
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21 complicated by a variable viscos
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2J Schultz-GrQnow (174) used a dime
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2S The results shm-red that equatio
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Su.bstituti011 of equati 2-22 gives
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29 In both Newtonian and non-Newton
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31 for viscous pseudoplas tics at 1
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33 (2-29 when both the distances ar
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JS Thermometers or thermocouples ar
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.37 2: a in in heat cQ@tent of the
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J9 cooling mediu..:m side, the heat
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41 ports a value of 3/4-.. He then
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43 find the effects of one or two o
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45 The group to the left of the equ
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47 the highest heat tra...nsfer coe
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49 A pitched blade turbine gave coe
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SI done on the correlation of heat
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5J evaluated at the wall temperatur
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ss to (2-46 where ill is the consis
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CHAPTER .2 DEVELOPMENT OF CORRELATI
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momentum" mass" and energy may be ~
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61 Vr;> Jt.- ,,"Ii'\... ..", ::: (V
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63 Substitution of these dimensionl
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l/(R + 1) and was able t@ elim.iE.a
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67 All of the variables and differe
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69 The average heat transfer coeffi
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N"v = C Iv''' (;';~-"')&'i'~ (%t-n,
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73 Semi-Empirical Correlation i ..,
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75 7I1C1?/lfOCOUPLc .JuNe T/ON IMBE
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77 _I"---- / SCALE I ~~, .5 j t /Z.
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also cop~ected to the pipes leading
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81 Ve8sel :J all th:l c]me 8 8 .) '
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83 potentiometer for varing the mot
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85 MATERIAL 7:0 STAIIJLESS STEEL /
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11 Wa.ll (Mi€1dl~) Same as #5 81
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89 shea.r ra.tes, tl?1ey a.re unaff
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and if' lO"V'l$' a sm.all amount of
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94- was about 40-45 ndmutes .. Tke
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96 vThere N is in rev./sec .. and S
Page 110 and 111: 88 ql\fETI A = 6 T \--T -s L/kw (1+
Page 112 and 113: I {)D The generalized Reynolds n~mb
Page 114 and 115: 02. CHAPTER !2. RESUI,TS Many heat
Page 116 and 117: 01 TABLE 5-2 sutn~U{Y OF ADDITIONAL
Page 118 and 119: 108 the batch than the other ticJO
Page 120 and 121: 108 optimum impeller heights were u
Page 122 and 123: 10 I r "'" , •• ,'., "",' """",
Page 124 and 125: 112 correlations for the prediction
Page 126 and 127: TABLE 5 - 4 Correlation Constants A
Page 128 and 129: 1/6 Table 5-5 and 5-6. A measure of
Page 130 and 131: TABLE S - 6 IMPELLER Correlation Co
Page 132 and 133: 120 greater than 2.0. In this case
Page 134 and 135: 12.2
Page 136 and 137: TABLE 5 - 9 CORRELATION E t (a/n +1
Page 138 and 139: TABLE 5 - 10 IMPELLER Correlation C
Page 140 and 141: TABLE 5 - 11 CORRELATION G (1.30/61
Page 142 and 143: 1.30 of the substantial improvement
Page 144 and 145: 1.3 2. The probable error in the ca
Page 146 and 147: 134 .,;' : :: :::: : ~ !~. , " . .'
Page 148 and 149: T." ••••••• ,_ .....
Page 150 and 151: 38 the cooling of nitration liquors
Page 152 and 153: 140 The average deviation of the me
Page 154 and 155: 42 tween 0.25 and 0.58. L~~l had re
Page 156 and 157: 144 transfer coefficients to non-Ne
Page 158 and 159: 16 of fit and it may t...herefore b
Page 162 and 163: 50 A ::: Apr ... B ::: C p ::: CPr
Page 164 and 165: 52. Q ::. Average heat transfer rat
Page 166 and 167: Xc = Function of Reynolds nL:l.m.be
Page 168 and 169: IS6 G REE:>{ ALPHABET 0 ::: Value o
Page 170 and 171: 158 coefficient. Thus, for the wate
Page 172 and 173: 160 , ., I .. : I :. '. • • !.
Page 174 and 175: 162 I , . I . "I '1 I i I 1 I 1· '
Page 176 and 177: 64 ncr --~iIluto e torque of the in
Page 178 and 179: 166 rive different temperatures; ab
Page 180 and 181: 168 TABLE A-4. SLOPE OF "LOG SHEAR
Page 182 and 183: TABLE 11.-5 RHEOLOGICAL DATA FOR CA
Page 184 and 185: TABLE A-5 (eollt. ) /12 o . 24;;& C
Page 186 and 187: '11 The flow behavior index and flu
Page 188 and 189: i .f.C ·F s o 6 1 6 I
Page 190 and 191: · . . . " , · . :::11" ': "'" ~ .
Page 192 and 193: 180 Tke thermal e€l1'!ciluetlvity
Page 194 and 195: 182 Heat capacity data for 100% gly
Page 196 and 197: IB4- wkiek ex~resses the aensity e
Page 198 and 199: 186 Ts - Torque X :: Peree~t 0~ ful
Page 200 and 201: Phase I Calcu13tiJ~ of Slope of !oG
Page 202 and 203: 3 REAL). N. ti •• D 4 cN=N E'I'
Page 204 and 205: ~~-- ~---- --~--~ ~~~--------------
Page 206 and 207: Phase IV Correlation of Flow Behavi
Page 208 and 209: 96 HEAT TRANSFER DATA FOR WA'fER US
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DATA /98 Batch \'ieight '" 94 •.
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zoo Run Center Dia!!1ec;er Ri'M Are
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DATA 20l. WATER - TUHBINSS Batch We
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204- HEAT T'rtANSFEH DATA USED IN C
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DATA ANCHor;: 206 Batch :'Ieight =
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2.08 Run Diameter RP!'1 Area Dynamo
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DAT_': 210 "i'ADDI,ES 9:5.7'10 GLYC
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212 DATA PADDLES 0.15 PEHC:::N'r CA
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211- D!~ 'I'l\. PA-:JDLES 0.20 PERC
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~;:. 'I'A 3.16 P.;'DDLES 0.24 PEHCE
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2/8 DATA PROPELL:SH3 0.15 P:~RCEN'l
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DATA DISK & VANE 'l'URBINE \'iATER
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2.22 DATA Tu.'i:SINES 0.15 PERCENT
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CALCULATION OF HEAT TRANSFER AND PR
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________________ ~parent viscosity
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------------------------ -_._------
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~--~, ~ ---- ---- -----------~-----
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232 NOMEliCLATURE FOR BEAT TRANSFER
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2.34- CALCULATED RSSULTS WATER Run
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2,36 Run Center Diameter h NNu Npo
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2.38 CALCULAT'ED ~E~:UL'rS ?!ATER P
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CALCULA'rED 1-{E8iiLlJ. 1 S \.;!\.'
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CALC:_:LA'i'ED _12:-)ULTS 24c. ANCH
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CALCULATEDR3SULTS PADDLE - CENTER H
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CALCULATED HESULTS 216 PADDLES - CE
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248 CALCULATED RESULTS PADDLES - CE
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CALCULATED RE:>ULTS 2. So PADDLf~S
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PADDLES - CALCULATED RE6ULTS CENTSH
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255 CALCULATED !tESULTS PROPELLERS
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CALCULA'rED RELmL'l'S PROPELLr~RS -
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CALCULATED HESULTS DISK AND VANE ;r
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DISK AND VAI'E .rU~1BINES CALCULATE
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DISK AND VANE '.i.'UR13HiES - CEl'i
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26S RESULT,:; U:3ED FOR REGRESSION
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of a least squares line can be calc
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269 (0-9 where y "" log NNu xl = lo
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-------------- -.Basi.c "Progr.a.rr
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-----------~---------- -~----------
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--~-------------- ------ ~~ -------
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Modi fi cati onB-foT' ev:alnatj ng-
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constants forco~~~latjQn F --------
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.------~.~~-- ---------------------
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28.J ENGLISH ALPHABET . - ¢,'"'~-=
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References 2.8S 1. ') L. 3. Lt- •
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287 56. 57. 58. C:;o ./ / . 60. 61.
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289 119. 120. 121. 122. 123. 12L~
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176. 177. 178. 179. 1(30. 181. 182.
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Prediction of batch heat transfer coefficients for pseudoplastic fluids ...

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