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Impact of cycle parameters on moisture removal rate of a sorption-based dehumidification system.

Number: 2506

Author(s) : AHMADI B., AHMADI M., NAWAZ K., GLUESENKAMP K. R., BIGHAM S.

Summary

Effective moisture management is crucial to developing energy-efficient air conditioning systems, particularly at high latent cooling loads. Standard dehumidification systems rely on a low-temperature condensation process to dehumidify a humid air stream. This is an energy-intensive process due to a strong coupling between the sensible and latent cooling loads. Liquid sorption-based dehumidification cycles separate sensible and latent cooling loads by directly capturing humidity, thereby improving the overall energy efficiency of air conditioning systems. The moisture removal rate and energy performance of a liquid sorption-based dehumidification cycle highly depend on cycle parameters including desiccant flow rate and temperature of the desorption process. In this work, an advanced liquid-sorption-based dehumidification cycle is developed to investigate the impact of cycle operating parameters on the moisture removal rate at high moisture contents. Two desorption temperatures of 120 and 140°C and four liquid desiccant flow rates of 2.5, 3, 3.5, and 4 g/s are studied. Experimental results indicated that the moisture removal rate increases with the solution flow rate due to a boost in the effective desiccant-air interfacial area available for the dehumidification process. A maximum moisture removal rate of 0.1 g/s at a solution flow rate of 2.5 g/s and a desorber temperature of 140°C was measured. The knowledge developed from the present study expedites the development of energy-efficient sorption-based air conditioning systems enabling effective and independent moisture management.

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  • Original title: Impact of cycle parameters on moisture removal rate of a sorption-based dehumidification system.
  • Record ID : 30030757
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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