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Energy-saving potential of a dual-module humidity pump for residential and commercial air conditioning.

Number: 2571

Author(s) : WU S., BALARAMAN A., FIX A. J., OH J., BRAUN J. E., WARSINGER D. M.

Summary

Air conditioning consumes nearly 20% of total building electricity around the world, with significant energy demands for handling latent cooling loads, particularly in humid climates. Innovative water vapor-selective membranes offer a distinctive solution for managing latent loads, as the ideal energy requirement for separating water vapor with a membrane is much smaller than the energy required for condensing it out of the air. This work proposes a dual-module humidity pump (DMHP) system for both residential air conditioning and commercial dedicated outdoor air systems (DOAS). A parametric study is conducted to assess the impact of key parameters and operating conditions on the energy consumption of the DMHP system. Practical guidelines for sizing the membrane system based on the design condition are introduced. The simulations show that up to 17% energy savings could be achieved for extremely humid weather conditions, with higher humidity leading to greater annual energy savings. The moisture removal efficiency (MRE) of the proposed DMHP-DOAS system is better in high humidity conditions, while the baseline DOAS performs well during low humidity conditions. The DMHP-DOAS system showed a 10.62% improvement in Integrated Seasonal Moisture Removal Efficiency (ISMRE) rating over the baseline system and an 11.61% improvement when actively switching between the baseline operation and the DMHP-DOAS operation.

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Details

  • Original title: Energy-saving potential of a dual-module humidity pump for residential and commercial air conditioning.
  • Record ID : 30033022
  • Languages: English
  • Subject: Figures, economy
  • Source: 2024 Purdue Conferences. 20th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2024/07/17

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