Performance of an experimental absorption cooler using aqueous lithium chloride and lithium chloride/lithium bromide solutions

Grover, G.S.; Devotta, S.; Holland, F. Antony

doi:10.1021/ie00086a021

Cited by 6 publications

(3 citation statements)

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“…solution in water, is fed from the top. To enhance the mass transfer between the air and the liquid, a number of methods can be used, including a column packed with inert packing, a spray column, or a finned tube surface type Esia et al, 1986 (19) Factor andGrossman, 1980 (3)* Grover et al, 1989 (4) Esia et al, 1985 (2)" Andrew, 1982 (18) A packed-bed absorber has been designed in this project to study the dehumidification of air. The packing material used in the column was 1.6 cm (5/8 inch) polypropylene F1ex.i rings, having a surface area to volume ratio of 3 4 2 m 2 / m 3 (104 ft2/ft3).…”

Section: Howcvermentioning

confidence: 99%

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Chung

Ghosh

Hines

1993

Separation Science and Technology

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A packed bed absorber-stripper system has been designed to dehumidify moist air by contact with aqueous solutions or lithium chloride. The packing material used in lhe study is 1.6 cm ( 5 / 8 inch) polypropylene Flexi rings, which have a surface to volume ratio of 342 m 2 / m 3 (104 ft2/ft3). The absorber is capable of handling air face velocities from 3362.4 to 6746.4 k g / m 2 h and liquid flow rates from 2534.1 to 54648 kg/m2h. Solutions of 30% and 40% lithium chloride in water were employed a s the dehumidifying agent. The minimum liquid flow rate calculated lrom the equilibrium data would be too low to wet the packing surface completely, and could not be used in the actual operating system. Therefore, liquid flow rates greater than the minimum wetting rate for the packing were used. Measured flooding conditions corresponded closely with exiting empirical correlations. M a s s transfer coenicients ranged from 0.062 kmol/m3s at 40% flooding to 0.166 kmol/m3s at 80% flooding lor the 40% lithium chloride solution. The height of a transfer unit calculated from the experimental data ranged from 0.340 m at a column elficiency of 71.6% to 0.617 m a t a column efficiency of 50%.

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Section: Howcvermentioning

confidence: 99%

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Chung

Ghosh

Hines

1993

Separation Science and Technology

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“…The present work was undertaken to study the comparative performance of an experimental absorption heat transformer with aqueous solutions of lithium bromide, lithium chloride, and a mixture (1:1 by weight) of lithium bromide and lithium chloride. The water-LiBr/LiCl pair has been used to study the peformance in an absorption cooler (Grover et al, 1989) and in an absorption heat pump (Patil et al, 1989). The corrosivity and health hazards of the pure LiBr solutions are reduced by the addition of LiCl.…”

Section: Working Pairmentioning

confidence: 99%

Performance of an experimental absorption heat transformer using aqueous lithium bromide, lithium chloride, and lithium bromide/lithium chloride solutions

Pataskar¹,

Adyanthaya²,

Devotta³

et al. 1990

Ind. Eng. Chem. Res.

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Performance data have been obtained on a small absorption heat transformer operating with the following working fluid/absorbent pairs: (i) water-lithium bromide, (ii) water-mixture of lithium chloride and lithium bromide (1:l by weight), and (iii) watel-lithium chloride. It is possible to deliver heat a t temperatures beyond 100 "C. It is demonstrated that water-LiC1 or water-LiBr/LiCl pairs can be advantagenously used as alternatives to the well-known water-LiBr pair. The actual coefficients of performance obtained by using the water-LiC1 pair are the best among the three pairs studied, under comparable conditions.

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“…Grover and Devotta analyzed the performance of a small absorption cooler with the working fluids of LiCl/H 2 O and LiBr–LiCl/H 2 O (mass ratio = 1:1), respectively. By comparing the performance data with the published data for LiBr/H 2 O, it was found that, for a given cooling duty, the LiBr–LiCl/H 2 O appears to require the least generator heat load.…”

Section: Introductionmentioning

confidence: 99%

Solubilities, Vapor Pressures, Densities, Viscosities, and Specific Heat Capacities of the LiNO₃/H₂O Binary System

Luo

2013

J. Chem. Eng. Data

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The solubility, vapor pressure, density, viscosity, and specific heat capacity of LiNO 3 /H 2 O were measured in this work. The solubilities were measured in ranges of temperature from 277.15 K to 431.15 K. The vapor pressures were measured in ranges of temperature and absorbent mass fraction from 297.65 K to 473.15 K and from 50 % to 70 %. The densities and viscosities were measured in ranges of temperature and absorbent mass fraction from 283.15 K to 413.15 K and from 30 % to 65 %. The specific heat capacities were measured in ranges of temperature and absorbent mass fraction from 303.15 K to 373.15 K and from 30 % to 60 %. Regression equations for solubility, vapor pressure, density, viscosity, and specific heat capacity were obtained by a least-squares method from the experimental data. The average absolute relative deviations of each property between the measured data and the individual calculated value from these regression equations were 0.13 %, 0.14 %, 0.12 %, 0.14 %, and 0.23 %, respectively. This research will be helpful when LiNO 3 /H 2 O is utilized as a working fluid for the absorption heat pump.

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Performance of an experimental absorption cooler using aqueous lithium chloride and lithium chloride/lithium bromide solutions

Cited by 6 publications

References 1 publication

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Performance of an experimental absorption heat transformer using aqueous lithium bromide, lithium chloride, and lithium bromide/lithium chloride solutions

Solubilities, Vapor Pressures, Densities, Viscosities, and Specific Heat Capacities of the LiNO₃/H₂O Binary System

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Performance of an experimental absorption cooler using aqueous lithium chloride and lithium chloride/lithium bromide solutions

Cited by 6 publications

References 1 publication

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Dehumidification of Air by Aqueous Lithium Chloride in a Packed Column

Performance of an experimental absorption heat transformer using aqueous lithium bromide, lithium chloride, and lithium bromide/lithium chloride solutions

Solubilities, Vapor Pressures, Densities, Viscosities, and Specific Heat Capacities of the LiNO3/H2O Binary System

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Product

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Solubilities, Vapor Pressures, Densities, Viscosities, and Specific Heat Capacities of the LiNO₃/H₂O Binary System