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Rooftop liquid desiccant systems and methods

A liquid desiccant, air conditioning system technology, applied in air conditioning systems, natural cooling systems, heating and ventilation control systems, etc., can solve problems such as increased energy costs, large fan power pressure drop across packed beds, etc.

Active Publication Date: 2016-11-23
EMERSON CLIMATE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These packed bed systems suffer from other disadvantages in addition to still carryover risks: the high resistance of the packed bed to air flow results in the need for greater fan power and pressure drop across the packed bed, requiring more energy
However, the evaporation of water in the air cools the air significantly, requiring the application of additional heat and thus increasing energy costs

Method used

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  • Rooftop liquid desiccant systems and methods
  • Rooftop liquid desiccant systems and methods
  • Rooftop liquid desiccant systems and methods

Examples

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Embodiment Construction

[0037] figure 1 A novel liquid desiccant system is depicted as described in more detail in US Patent Application Publication No. 20120125020, which is incorporated herein by reference. The regulator 101 includes a set of plate structures that are hollow inside. A cold heat transfer fluid is generated in the heat sink 107 and enters the plates. The liquid desiccant solution at 114 is brought to the outer surfaces of the plates and travels down the outer surfaces of each plate. The liquid desiccant travels behind a sheet of material, such as a membrane, located between the air stream and the surface of the plate. The sheet of material may also comprise a hydrophilic material or a flocked material, in which case the liquid desiccant travels more or less inside the material rather than over its surface. External air 103 is now blown through the set of panels. The liquid desiccant on the surface of the plates attracts water vapor in the air stream, and the cooling water inside...

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Abstract

Liquid desiccant air-conditioning systems cool and dehumidify a space in a building when operating in a cooling operation mode, and heat and humidify the space when operating in a heating operation mode.

Description

[0001] related application [0002] This application claims U.S. Provisional Patent Application No. 61 / 968,333, filed March 20, 2014, entitled "METHODS AND SYSTEMS FOR LIQUID DESICCANT ROOFTOP UNIT," and the April 2014 Priority to U.S. Provisional Patent Application No. 61 / 978,539, entitled "Method and System for Liquid Desiccant Rooftop Units," filed on March 11, both of which are hereby incorporated by reference. Background technique [0003] The present application generally relates to the use of liquid desiccant membrane modules to dehumidify and cool an outside air stream entering a space. More specifically, this application relates to the use of a microporous membrane to maintain a liquid desiccant treating an external air stream separate from direct contact with said air stream while using a conventional vapor compression system in parallel to treat the return air flow. The membrane allows for the use of turbulent air flow where fluid streams (air, optional cooling f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/14F24F11/02
CPCF24F3/1417F24F2221/54F24F3/147F24F2003/1435F24F2003/1452F24F11/65F24F2003/1458F25B30/04F25B25/005F25B29/006
Inventor 彼得·F·范德莫伊伦
Owner EMERSON CLIMATE TECH INC