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Experimental investigations on performance of liquid desiccant-vapor compression hybrid air conditioner
Published in Elsevier Ltd
2015
Volume: 77
   
Pages: 153 - 162
Abstract
A coupled desiccant column is integrated with a conventional room air conditioner (AC) to enhance dehumidification of the room air. One desiccant column (absorber) is placed after the evaporator the other (regenerator) after the condenser of the AC unit. Such a novel liquid desiccant vapour compression hybrid air conditioning system has been fabricated and tested in a balanced ambient room type calorimeter for very low flow rates of liquid desiccant (lithium bromide solution). The moisture from the cold supply air is transferred to the hot condenser air by the desiccant flowing in the loop, thereby complimenting the dehumidification of the room air at the evaporator. The supply air is also sensibly heated during the dehumidification process by liquid desiccant in the absorber, which together enables the hybrid system to maintain low humidity in the room. Whereas the liquid desiccant is regenerated by the condenser waste heat, the entire cooling is derived only by the AC unit. The experimental results show that an increase of room temperature reduces both dehumidification of process air and regeneration of liquid desiccant, whereas an increase of room specific humidity enhances both these for the flow rate of the liquid desiccant in the range of 0.2-1.6% of the air flow rate through the absorber. © 2014 Elsevier Ltd. All rights reserved.
About the journal
JournalData powered by TypesetApplied Thermal Engineering
PublisherData powered by TypesetElsevier Ltd
ISSN13594311
Open AccessNo
Concepts (18)
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    Air conditioning
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    DOMESTIC APPLIANCES
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    Driers (materials)
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    Evaporators
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    Flow rate
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    Humidity control
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    Hybrid systems
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    Regenerators
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    Waste heat
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    Experimental investigations
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    HYBRID AIR CONDITIONER
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    Liquid desiccant
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    LITHIUM BROMIDE SOLUTIONS
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    Room air conditioners
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    SPECIFIC HUMIDITY
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    VAPOR-COMPRESSION SYSTEMS
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    VAPOUR COMPRESSIONS
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    Liquids