Prediction of batch heat transfer coefficients for pseudoplastic fluids ...
Prediction of batch heat transfer coefficients for pseudoplastic fluids ... Prediction of batch heat transfer coefficients for pseudoplastic fluids ...
11- rotat~s at va~ious spe~ds and the resultant to~que om the bob is measUl1'ed.. In othel'" models val'!'ious tOl'"ques lU'Pe applied to th~ bob and the resultant speed of the bob ~easured. The viscomet~r ~sed in this work was oOMposed of a bob drivem by a sync~onous motor at a eomst~t val~e of RPM~ (Eigh~ diffel'"ent speeds weF'e possible) .. The tOl"'que required to attain the desired speed was measured .. wall of the bob is (2-5 wher~ Ts is the torque required to rotate the bob .. Rb is the radius of ~e bob. hb is the height of the bob .. The shear 1 rate in ~e annular space between the bob ~d cup depends upon the ratio of the radius of th~ cup to tine bob, s, the angular speed of the bob, and the fluid parameters .. FOF Bingh&m plastics the relati0nanips are given by Fitch (64), Wilkinson (213), Green (79), and V~ Wazer (196). For power law fluids, Y,.:pieger and MaPon (100) developed an equation fop the she~ ratewhieh is valid to a m~~ cup to bob radius ratio of 1 .. 2 .. D .. K, (~,,-/) +Ji Z (~,,-/)2J [ 1+ ~ /hV 1 (oJ) (2-6 (2-7
IS In(s) (2-8 (2-9 where Re is the radius Gf t:B.e ell]) .. nil is the slC!1pe of a logarit1::l:m.ie 1"'10t of t
- Page 1 and 2: Copyright Warning & Restrictions Th
- Page 3 and 4: PREDICTION OF BATCH HEAT TRANSFER C
- Page 5 and 6: while the latter has five to seven
- Page 7 and 8: ACKNOWLEDGEMENTS The auther ex~ress
- Page 9 and 10: Chapter 1: Chapter 2: Introducticm
- Page 11 and 12: LIST OF FIGURES page 2-1 FlGW Behav
- Page 13 and 14: CHAPTER I INTRODUCTION BATCH HEAT T
- Page 15 and 16: 3 as pseudoplasticso Pseudoplastic
- Page 17 and 18: 5 ~n addition to studying the effec
- Page 19 and 20: 7 A B SLOPE = /'n- .( 10 ~y FIG 2-1
- Page 21 and 22: 15.5, 183, 185).. Most of their eff
- Page 23 and 24: va:ry withl. the slaear I'Rte.. 11.
- Page 25: 13 RHEOLOGIC_~ INVESTIGATION OFPO~~
- Page 29 and 30: '7 ft~ easier method of calibrating
- Page 31 and 32: 19 of' thixotropic breakdown l'Ji t
- Page 33 and 34: 21 complicated by a variable viscos
- Page 35 and 36: 2J Schultz-GrQnow (174) used a dime
- Page 37 and 38: 2S The results shm-red that equatio
- Page 39 and 40: Su.bstituti011 of equati 2-22 gives
- Page 41 and 42: 29 In both Newtonian and non-Newton
- Page 43 and 44: 31 for viscous pseudoplas tics at 1
- Page 45 and 46: 33 (2-29 when both the distances ar
- Page 47 and 48: JS Thermometers or thermocouples ar
- Page 49 and 50: .37 2: a in in heat cQ@tent of the
- Page 51 and 52: J9 cooling mediu..:m side, the heat
- Page 53 and 54: 41 ports a value of 3/4-.. He then
- Page 55 and 56: 43 find the effects of one or two o
- Page 57 and 58: 45 The group to the left of the equ
- Page 59 and 60: 47 the highest heat tra...nsfer coe
- Page 61 and 62: 49 A pitched blade turbine gave coe
- Page 63 and 64: SI done on the correlation of heat
- Page 65 and 66: 5J evaluated at the wall temperatur
- Page 67 and 68: ss to (2-46 where ill is the consis
- Page 69 and 70: CHAPTER .2 DEVELOPMENT OF CORRELATI
- Page 71 and 72: momentum" mass" and energy may be ~
- Page 73 and 74: 61 Vr;> Jt.- ,,"Ii'\... ..", ::: (V
- Page 75 and 76: 63 Substitution of these dimensionl
IS<br />
In(s) (2-8<br />
(2-9<br />
where Re is the radius Gf t:B.e ell]) ..<br />
nil is the slC!1pe <strong>of</strong> a logarit1::l:m.ie 1"'10t <strong>of</strong> t
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