Evaluation of heat and mass transfer coefficients in a gauze-type structured packing air dehumidifier operating with liquid desiccant

Al‐Farayedhi, Abdulghani A.; Gandhidasan, P.; Al-Mutairi, M.A.

doi:10.1016/s0140-7007(01)00016-0

Cited by 82 publications

(19 citation statements)

References 6 publications

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“…The cost effective liquid desiccant (CELD) is a mixture of 50% calcium chloride and 50% lithium chloride [92,93]. Here, the mixing aim at improved heat and mass transfer performance as well as an economic performance.…”

Section: Selected Examples Of the Use Of Cacl 2 For Dehumidification mentioning

confidence: 99%

“…Here, the mixing aim at improved heat and mass transfer performance as well as an economic performance. The authors measured heat and mass transfer coefficients of three liquid desiccants: lithium bromide aqueous solution, calcium chloride aqueous solution and the CELD [93]. The results show that the CELD has significantly improved mass transfer coefficient than pure calcium chloride aqueous solution.…”

Section: Selected Examples Of the Use Of Cacl 2 For Dehumidification mentioning

confidence: 99%

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A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

109

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Section: Selected Examples Of the Use Of Cacl 2 For Dehumidification mentioning

confidence: 99%

Section: Selected Examples Of the Use Of Cacl 2 For Dehumidification mentioning

confidence: 99%

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

109

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“…These types of random packing materials offer large contact area in a relatively small volume compared to structured packing, thus facilitating more mass transfer. However, they generally cause high air pressure drop [50]. …”

Section: Spray Towermentioning

confidence: 99%

“…They have shown excellent performance characteristics with a relatively low ratio of pressure drop to heat and mass transfer coefficient per unit volume, in addition to easy installation [50]. Examples of structured packings include cellulose rig pads, wood grids, expanded metal lash, double spiral rings.…”

mentioning

confidence: 99%

Solar pond powered liquid desiccant evaporative cooling

Elsarrag

Igobo

Alhorr

et al. 2016

Renewable and Sustainable Energy Reviews

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Liquid desiccant cooling systems (LDCS) are energy efficient means of providing cooling, especially when powered by low-grade thermal sources. In this paper, the underlying principles of operation of desiccant cooling systems are examined, and the main components (dehumidifier, evaporative cooler and regenerator) of the LDCS are reviewed. The evaporative cooler can take the form of direct, indirect or semi-indirect. Relative to the direct type, the indirect type is generally less effective. Nonetheless, a certain variant of the indirect type -namely dew-point evaporative cooler -is found to be the most effective amongst all. The dehumidifier and the regenerator can be of the same type of equipment: packed tower and falling film are popular choices, especially when fitted with an internal heat exchanger. The energy requirement of the regenerator can be supplied from solar thermal collectors, of which a solar pond is an interesting option especially when a large scale or storage capability is desired.

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“…Some studies [29] show that the resistances of heat and mass transfer are concentrated in air-phase chiefly. Consequently, the convective heat and mass transfer coefficients in air-phase must be measured with experiments accompanied by some relevant calculation ways at the same time.…”

Section: Analysis Of Heat and Mass Transfer Coefficientsmentioning

confidence: 99%