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Estimating carryover parameters of a non-wicking random weave fabric - with applications to liquid desiccant systems.

Number: 2613

Author(s) : FALLOWS S., MULLER M., ROSSI D.

Summary

Liquid desiccant dehumidification is an energy-saving alternative to conventional vapor-compression dehumidification. Liquid desiccant systems can be designed in various manners, with one of the common system types consisting of air and desiccant in crossflow. The carryover of liquid desiccant droplets is unwanted as it loses material, can cause corrosion, and depending on the liquid desiccant can reduce the breathable air quality in HVAC applications. The integration of fabrics as a primary conduit for desiccant flow is common to improve performance and reduce carryover. A benchtop scale falling film crossflow liquid desiccant system was constructed to study the entrainment of liquid desiccant droplets sheared from a fabric by an air stream. Additionally, an investigation was conducted to define the critical characteristics of a fabric relevant to the carryover of liquid desiccant droplets. The desiccant “bulge” profiles pushing out of the fabric’s pores were modeled to identify the onset of carryover. Results show that the key non-dimensional parameter (Weber number) predicts no carryover for We <= 10.

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  • Original title: Estimating carryover parameters of a non-wicking random weave fabric - with applications to liquid desiccant systems.
  • Record ID : 30033019
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 20th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2024/07/17

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