Effectiveness of moisture removal for an adiabatic counterflow packed tower absorber operating with CaCl/sub 2/-air contact system

Journal Article · Sun May 01 00:00:00 EDT 1988 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3268251· OSTI ID:6459790

Ullah, M R; Kettleborough, C F; Gandhidasan, P ^[1]

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1. Dept. of Mechanical Engineering, Texas A and M Univ., College Station, TX (US)

In the open cycle desiccant cooling system, the room air or the room air mixed with ambient air is drawn through the desiccant dehumidifier where water vapor is absorbed. Then the dry air is cooled by a sensible heat exchanger by passing the air through an evaporative cooler. The desiccant may be either solid or liquid. Liquid desiccant systems are not as well developed as solid desiccant systems. Any attempt to improve the performance of a liquid desiccant should include a performance analysis of the dehumidifier. One of the efficient dehumidifiers for the liquid desiccant system is the packed bed dehumidifier and shown schematically. Because of the abundance of variables involved with the packed bed dehumidifier, the analysis becomes increasingly complex and is achieved at very high computational cost. Hence there is a need to define the performance of a packed bed quantitatively. A definition of air moisture removal effectiveness is presented based on the rigorous heat and mass transfer calculations for an adiabatic counterflow packed bed dehumidifier. This note also studies the influence of relevant parameters on tower performance quantified by the moisture removal effectiveness.

• OSTI ID: 6459790
• Journal Information: J. Sol. Energy Eng.; (United States), Vol. 110:2
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
COUNTERFLOW SYSTEMS
ADIABATIC PROCESSES
DESICCANTS
TECHNOLOGY ASSESSMENT
PACKED BED
PERFORMANCE TESTING
CALCIUM CHLORIDES
CALCULATION METHODS
COOLING TOWERS
HEAT EXCHANGERS
LIQUIDS
MASS TRANSFER
OPEN-CYCLE SYSTEMS
SOLIDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
FLUIDS
HALIDES
HALOGEN COMPOUNDS
MECHANICAL STRUCTURES
TESTING
TOWERS
200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems