Liquid-desiccant systems simulation

Mahmoud, K.G.; Ball, Herbert D.

doi:10.1016/0140-7007(92)90030-x

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…The earliest liquid desiccant system (LDS) was suggested and experimentally tested by Lof (1955) using triethylene glycol as the desiccant. Li et al (2005), Mahmoudm and Ball (1992), Elsayed (1994) and Kessling et al (1998) have all described different air handling systems using liquid desiccants.…”

Section: Introductionmentioning

confidence: 98%

Performance analysis of a no-frost hybrid air conditioning system with integrated liquid desiccant dehumidification

Zhang

Dang

Hihara

2010

International Journal of Refrigeration

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Section: Introductionmentioning

confidence: 98%

Performance analysis of a no-frost hybrid air conditioning system with integrated liquid desiccant dehumidification

Zhang

Dang

Hihara

2010

International Journal of Refrigeration

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“…The earliest liquid desiccant system was suggested and experimentally tested by Lof [1] using triethylene glycol as the desiccant. Many researchers [2–5] have all described different air handling systems using liquid desiccants.…”

Section: Introductionmentioning

confidence: 99%

Experimental performance study of a proposed desiccant based air conditioning system

Bassuoni

2014

Journal of Advanced Research

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An experimental investigation on the performance of a proposed hybrid desiccant based air conditioning system referred as HDBAC is introduced in this paper. HDBAC is mainly consisted of a liquid desiccant dehumidification unit integrated with a vapor compression system (VCS). The VCS unit has a cooling capacity of 5.27 kW and uses 134a as refrigerant. Calcium chloride (CaCl2) solution is used as the working desiccant material. HDBAC system is used to serve low sensible heat factor applications. The effect of different parameters such as, process air flow rate, desiccant solution flow rate, evaporator box and condenser box solution temperatures, strong solution concentration and regeneration temperature on the performance of the system is studied. The performance of the system is evaluated using some parameters such as: the coefficient of performance (COPa), specific moisture removal and energy saving percentage. A remarkable increase of about 54% in the coefficient of performance of the proposed system over VCS with reheat is achieved. A maximum overall energy saving of about 46% is observed which emphasizes the use of the proposed system as an energy efficient air conditioning system.

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“…The dehumidification process can be accomplished using equipment such as a finned-tube surface in a column (Johannsen, 1984;Mahmoud and Ball, 1988), spray tower (Scalabrin and Scaltriti, 1990;Chung and Wu, 1998) or packed tower (Factor and Grossman, 1980;Lof et al, 1984;Gandhidasan et al, 1986;Sick et al, 1988;McDonald et al, 1992;Elsayed et al, 1993;Chung, 1994;Sadasivam and Balakrishnsan, 1994;Khan, 1996;Oberg and Goswami, 1998). Out of these three basic configurations for a liquid desiccant dehumidifier, packed tower configuration has received more attention because of a large rate of heat and mass transfer per unit volume, thus lending themselves to compact design but a limited number of experimental studies are reported in the open literature.…”

Section: Introductionmentioning

confidence: 99%

Investigation of heat and mass transfer in a gauze-type structured packing liquid desiccant dehumidifier

Gandhidasan

Al‐Farayedhi

Antar

2002

Int. J. Energy Res.

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SUMMARYIn this experimental investigation, a packed bed column suitable for 5-ton hybrid cooling system has been designed to study the absorption of water vapour from moist air by contact with aqueous solutions of calcium chloride. The packing material used in the study was two elements of the BXPEP structured packing and the height of the each element was 17 cm. This packed bed dehumidifier handles desiccant flow rates from 10 to 32 l/min. This paper presents results from a detailed experimental investigation of the heat and mass transfer between a liquid desiccant (calcium chloride) and air in a gauze-type structured packing dehumidifier. The effects of different independent variables such as air inlet absolute humidity, desiccant inlet temperature, flow rate and its concentration on the performance of the dehumidifier have been investigated.

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Liquid-desiccant systems simulation

Cited by 6 publications

References 7 publications

Performance analysis of a no-frost hybrid air conditioning system with integrated liquid desiccant dehumidification

Performance analysis of a no-frost hybrid air conditioning system with integrated liquid desiccant dehumidification

Experimental performance study of a proposed desiccant based air conditioning system

Investigation of heat and mass transfer in a gauze-type structured packing liquid desiccant dehumidifier

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