Heat dissipation systems with hygroscopic working fluid

Martin, Christopher L.

Title: Heat dissipation systems with hygroscopic working fluid

Abstract

A heat dissipation system apparatus and method of operation using hygroscopic working fluid for use in a wide variety of environments for absorbed water in the hygroscopic working fluid to be released to minimize water consumption in the heat dissipation system apparatus for effective cooling in environments having little available water for use in cooling systems. The system comprises a low-volatility, hygroscopic working fluid to reject thermal energy directly to ambient air. The low-volatility and hygroscopic nature of the working fluid prevents complete evaporation of the fluid and a net consumption of water for cooling, and direct-contact heat exchange allows for the creation of large interfacial surface areas for effective heat transfer. Specific methods of operation prevent the crystallization of the desiccant from the hygrosopic working fluid under various environmental conditions.

Inventors:: Martin, Christopher L.

Issue Date:: 2020-09-22

Research Org.:: Energy & Environmental Research Center, Grand Forks, ND (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1735292

Patent Number(s):: 10782036

Application Number:: 15/617,619

Assignee:: Energy & Environmental Research Center Foundation (Grand Forks, ND)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING

F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28B - STEAM OR VAPOUR CONDENSERS

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F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING
F24F3/1417 - {with liquid hygroscopic desiccants}

F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28B - STEAM OR VAPOUR CONDENSERS
F28B9/06 - with provision for re-cooling the cooling water or other cooling liquid

F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28C - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
F28C1/14 - comprising also a non-direct contact heat exchange

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DOE Contract Number:: FC26-08NT43291

Resource Type:: Patent

Resource Relation:: Patent File Date: 06/08/2017

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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                    Martin, Christopher L. Heat dissipation systems with hygroscopic working fluid.  United States: N. p., 2020. 
        Web.

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                    Martin, Christopher L. Heat dissipation systems with hygroscopic working fluid.  United States.

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                    Martin, Christopher L. Tue .  
        "Heat dissipation systems with hygroscopic working fluid".  United States.  https://www.osti.gov/servlets/purl/1735292.

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@article{osti_1735292,

  title        = {Heat dissipation systems with hygroscopic working fluid},

  author       = {Martin, Christopher L.},

  abstractNote = {A heat dissipation system apparatus and method of operation using hygroscopic working fluid for use in a wide variety of environments for absorbed water in the hygroscopic working fluid to be released to minimize water consumption in the heat dissipation system apparatus for effective cooling in environments having little available water for use in cooling systems. The system comprises a low-volatility, hygroscopic working fluid to reject thermal energy directly to ambient air. The low-volatility and hygroscopic nature of the working fluid prevents complete evaporation of the fluid and a net consumption of water for cooling, and direct-contact heat exchange allows for the creation of large interfacial surface areas for effective heat transfer. Specific methods of operation prevent the crystallization of the desiccant from the hygrosopic working fluid under various environmental conditions.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {9}

}

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