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Filtering by: Creator Kamvar, Z. N. Remove constraint Creator: Kamvar, Z. N. Advisor Knudsen, James G. Remove constraint Advisor: Knudsen, James G. Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • Natural and forced turbulent mixing in rod bundles

    Creator:
    Jovanovic, Goran N.
    Abstract:
    The effects of mass flow rate and subchannel configuration on the turbulent interchange between adjacent subchannel in simulated rod bundle were investigated. The simulated rod bundle was made by arranging seven 1.913 cm diameter acrylic plastic rods in an equilateral triangular pattern in a tube 8.89 cm inside diameter. The...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF GORAN N. JOVANOVIC for the

  • Turbulent heat transfer in annuli at large diameter ratios

    Creator:
    Unzicker, William Frank
    Abstract:
    Heat transfer from the inner wall of an annulus to subcooled water in turbulent parallel flow was studied. The inner core of the annulus consisted of wires varying from 0.0019 to 0.0197 inch in diameter. The outer tube consisted of a 1.01 inch diameter glass tube 24 inches long. Diameter...
    Resource Type:
    Masters Thesis
    Full Text:
    .._.i w S Via 6 .00 a 1°). / mom mml z z An á z - - N O N 10 I I I 1 t 1

  • Nucleate boiling in a vertical annular duct

    Creator:
    Daniel, Tyrone
    Abstract:
    Nucleate boiling of water in a vertical annulus was studied. The test section was entirely of stainless steel construction and was formed by a length of stainless steel tubing with a stainless steel heater rod centered in it. Two test sections with length to diameter ratios of 18 and 33...
    Resource Type:
    Masters Thesis
    Full Text:
    (F) 8L 6 # U n l i B U T T T O U ' C Z a x n b T H E A T F L U X ( B t u / H r * f t

  • Effects of water quality and surface temperature on the scaling characteristics of cooling tower water

    Creator:
    Lahm, Lawrence
    Abstract:
    The fouling of cooling tower water was investigated as a function of heater surface temperature and water quality. In particular, the effects on fouling of the addition of calcium in excess of the amounts required for saturation were examined. First, the average bulk water temperature was 97 ± 1 degree...
    Resource Type:
    Masters Thesis
    Full Text:
    Rg = the gas constant T b = the water bulk temperature T = the wall temperature (constant) n,K3

  • Fouling characteristics of cooling tower water containing corrosion inhibitors

    Creator:
    Santoso, Elisabeth
    Abstract:
    The fouling characteristics of cooling tower water containing various corrosion inhibitors and other additives on heat transfer surface have been investigated. Corrosion inhibitors investigated included zinc-chromate and phosphates. In addition, additives including polyacrylate and phosphonate (HEDP and AMP) were used to determine their effectiveness as antifoulants. The tests were conducted...
    Resource Type:
    Dissertation
    Full Text:
    ) dO de He assumed a linear temperature relation and an n" order chemical reaction for crystal growth

  • Deposition characteristics of magnesium silicate and calcium carbonate in cooling tower water

    Creator:
    Lee, Sai Heep
    Abstract:
    Deposition characteristics of magnesium silicate and calcium carbonate on a heated surface in cooling tower water using city water as make-up was investigated. Flow velocity, bulk temperature and calcium hardness were maintained constant at 5.3 ft/ sec, 95°F and 150 ppm as CaCO₃ respectively whereas surface temperature varied from 105°F...
    Resource Type:
    Masters Thesis
    Full Text:
    Arrhenius type equation, the deposition term was formulated as d = K 5 Pd (Sl)n exp (-Ea/Rd Ts) (2-14

  • Momentum transfer in climbing-film flow in an annular duct

    Creator:
    Kim, Duk Hwang
    Abstract:
    Momentum transfer in an annular duct with upward gas-Iiquid flow was studied under the condition that the liquid flowed as a film only on the inner core of the annulus, the outer wall remaining dry. Previous workers have studied climbing and falling liquid films in tubes or on vertical planes....
    Resource Type:
    Dissertation
    Full Text:
    ,' - ",,,') ,Z [-ai,1 ae, lax/4 z d", 4 ou r' tr( "rr.' - ', t) * -t tIf=-l prJtz ur(' ,.' - ,,n')= u

  • Heat transfer in a fluidized bed tubular heat exchanger

    Creator:
    Genetti, William Ernest
    Resource Type:
    Dissertation
    Full Text:
    Velocity Curves 14 N s 0 I 0 where O. 22 S 0. 09 Nu max max 0. 64 Ar max max (---) t

  • Turbulent mixing across adjacent subchannels in packed rod bundles using conductivity measurement

    Creator:
    Chan, Pui Yuen
    Abstract:
    Turbulent mixing across adjacent subchannels in packed rod bundles was studied using conductivity measurement and sodium chloride solution as the tracer. Single phase water was the fluid investigated. The packed rod bundles were seven stainless steel tubes, 1.905 cm in diameter and 152.4 cm long, arranged in hexagonal close-packed configuration...
    Resource Type:
    Masters Thesis
    Full Text:
    difference, so that and dC =dZi,j Z, wig = p 1, 3 ( z. j b (2. 7) (2.8) Equation (2. 8) is the basic

  • Local and average heat transfer coefficients in a fluidized bad heat exchanger

    Creator:
    Noe, Alphonse Roman
    Abstract:
    Local and average heat transfer coefficients for heat transfer from internal tubes to a fluidized bed were investigated. A fluidized bed heat exchanger was compared to a baffled and an unbaffled exchanger in terms of power and heat transfer surface area requirements. The fluidized bed heat exchanger consisted of a...
    Resource Type:
    Masters Thesis
    Full Text:
    . Values of local coefficients ranging from Z to 101 Btu/hr. 7) ft-." F and average coefficients ranging