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Boiling-point rise, Determination

This method can be used for determining values of many other physical properties, including heat capacity, enthalpy, boiling-point rise and viscosity. [Pg.5]

These calculations should yield liquor concentrations in each effect that make possible a revised estimate of boiling-point rises. They also give the quantity of heat that must be transferred in each effect. From the heat loads, assumed temperature differences, and heat-transfer coefficients, heating-surface requirements can be determined. If the distribution of heating surface is not as desired, the entire calculation may need to be repeated with revised estimates of the temperature in each effect. [Pg.1315]

Product Concentration Control. Product concentration is one of the most important evaporator system control parameters. It can be determined from the solution density, as assumed in the discussion above, or the boiling point rise (BPR). [Pg.1162]

EXAMPLE 8.4-2. Use of Diihring Chart for Boiling-Point Rise As an example of use of the chart, the pressure in an evaporator is given as 25.6 kPa (3.72 psia) and a solution of 30% NaOH is being boiled. Determine the boiling temperature of the NaOH solution and the boiling-point rise BPR of the solution over that of water at the same pressure. [Pg.499]

From the known outlet concentration and pressure in the last effect, determine the boiling point in the last effect. (If a boiling-point rise is present, this can be determined from a Duhring line plot.)... [Pg.504]

If a boiling-point rise (BPR) in °C is present, estimate the pressure in effects 1 and 2 and determine the BPR in each of the three effects. Only a crude pressure estimate is needed since BPR is almost independent of pressure. Then the AT available for heat transfer without the superheat is obtained by subtracting the sum of all three BPRs from the overall AT of 7 — Tj (saturation). Using Eq. (8.5-6), estimate AT[, ATj, and AT3. Then calculate the boiling point in each effect.]... [Pg.505]

Boiling-Point Rise of NaOH Solutions. Determine the boiling temperature of the... [Pg.516]

Boiling-Point Rise of Biological Solutes in Solution. Determine the boiling-point... [Pg.516]

See other pages where Boiling-point rise, Determination is mentioned: [Pg.477]    [Pg.772]    [Pg.173]    [Pg.477]    [Pg.99]    [Pg.40]    [Pg.866]    [Pg.267]    [Pg.1209]    [Pg.35]    [Pg.488]    [Pg.267]    [Pg.50]    [Pg.1210]    [Pg.1047]    [Pg.477]    [Pg.13]    [Pg.499]    [Pg.148]    [Pg.5]    [Pg.85]    [Pg.85]    [Pg.86]    [Pg.179]    [Pg.460]    [Pg.1045]    [Pg.142]    [Pg.385]    [Pg.59]    [Pg.15]    [Pg.85]    [Pg.86]    [Pg.179]    [Pg.460]    [Pg.263]    [Pg.57]    [Pg.185]    [Pg.575]    [Pg.775]   
See also in sourсe #XX -- [ Pg.925 ]



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