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Solar-driven technology for freshwater production from atmospheric air by using the composite desiccant material “CaCl2/floral foam”

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Abstract

In this communication, experiments have been performed to check the capability of the newly formed composite desiccant material (CaCl2/floral) for the extraction of freshwater from atmospheric air. Three numbers of solar glass desiccant box type system (SGDBS) with a captured area of 0.36 m2 each, have been used. The design parameters for the water production are height of glass from desiccant bed at 0.22 m, inclination in angle as 30°, the effective thickness of glass as 3 mm and number of glazing as single. The maximum yield by the new composite desiccant material is 0.35 ml/cm3/day. The efficiency of the system SGDBS with 37 % concentration of CaCl2 is 76.44 %.

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Abbreviations

CRF:

Capital recovery factor

G a :

Adsorption rate (kg/h)

L :

Latent heat of water at average bed temperature (J/kg)

M sol :

Mass of solution (kg)

M s :

Mass of salt (kg)

M w :

Mass of water (kg)

m ws :

Weight of desiccant on wet basis (kg)

n :

Number of useful years

P :

Initial investment

r%:

Annual rate of interest

S :

Salvage value

SFF:

Sinking fund factor

w :

Moisture content in desiccant (kgwater vapor/kgdesiccant)

X :

Concentration of solution

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology, Kurukshetra, Haryana, 136119, India

    Manoj Kumar & Avadhesh Yadav

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  1. Manoj Kumar
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  2. Avadhesh Yadav
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Correspondence to Manoj Kumar.

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Kumar, M., Yadav, A. Solar-driven technology for freshwater production from atmospheric air by using the composite desiccant material “CaCl2/floral foam”. Environ Dev Sustain 18, 1151–1165 (2016). https://doi.org/10.1007/s10668-015-9693-3

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