Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations

Kozubal, E.; Herrmann, L.; Deru, M.; Clark, J.

doi:10.2172/1159352

Title: Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations

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Abstract

Dehumidification or latent cooling in buildings is an area of growing interest that has been identified as needing more research and improved technologies for higher performance. Heating, ventilating, and air-conditioning (HVAC) systems typically expend excessive energy by using overcool-and-reheat strategies to dehumidify buildings. These systems first overcool ventilation air to remove moisture and then reheat the air to meet comfort requirements. Another common strategy incorporates solid desiccant rotors that remove moisture from the air more efficiently; however, these systems increase fan energy consumption because of the high airside pressure drop of solid desiccant rotors and can add heat of absorption to the ventilation air. Alternatively, liquid desiccant air-conditioning (LDAC) technology provides an innovative dehumidification solution that: (1) eliminates the need for overcooling and reheating from traditional cooling systems; and (2) avoids the increased fan energy and air heating from solid desiccant rotor systems.

Authors:: Kozubal, E.; Herrmann, L.; Deru, M.; Clark, J.

Publication Date:: Mon Sep 01 00:00:00 EDT 2014

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy Building Technologies Office

OSTI Identifier:: 1159352

Report Number(s):: NREL/TP-5500-60655

DOE Contract Number:: AC36-08GO28308

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; DEHUMIDIFICATION; LATENT COOLING; LIQUID DESSICANT AIR CONDITIONING; OVERCOOL; REHEAT; Buildings

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                    Kozubal, E., Herrmann, L., Deru, M., and Clark, J. Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations.  United States: N. p., 2014. 
        Web.  doi:10.2172/1159352.

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                    Kozubal, E., Herrmann, L., Deru, M., & Clark, J. Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations.  United States.  https://doi.org/10.2172/1159352

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                    Kozubal, E., Herrmann, L., Deru, M., and Clark, J. 2014.  
        "Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations".  United States.  https://doi.org/10.2172/1159352.  https://www.osti.gov/servlets/purl/1159352.

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@article{osti_1159352,

  title        = {Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations},

  author       = {Kozubal, E. and Herrmann, L. and Deru, M. and Clark, J.},

  abstractNote = {Dehumidification or latent cooling in buildings is an area of growing interest that has been identified as needing more research and improved technologies for higher performance. Heating, ventilating, and air-conditioning (HVAC) systems typically expend excessive energy by using overcool-and-reheat strategies to dehumidify buildings. These systems first overcool ventilation air to remove moisture and then reheat the air to meet comfort requirements. Another common strategy incorporates solid desiccant rotors that remove moisture from the air more efficiently; however, these systems increase fan energy consumption because of the high airside pressure drop of solid desiccant rotors and can add heat of absorption to the ventilation air. Alternatively, liquid desiccant air-conditioning (LDAC) technology provides an innovative dehumidification solution that: (1) eliminates the need for overcooling and reheating from traditional cooling systems; and (2) avoids the increased fan energy and air heating from solid desiccant rotor systems.},

  doi          = {10.2172/1159352},

  url          = {https://www.osti.gov/biblio/1159352},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Sep 01 00:00:00 EDT 2014},

  month        = {Mon Sep 01 00:00:00 EDT 2014}

}

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