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Efficient Air Dehumidification Can Save 15%-50% of Cooling Energy in Commercial Buildings

  • National Renewable Energy Laboratory
  • Altaire Systems
  • Academy Energy Group

Research output: NLRPoster

Abstract

Current approach to dehumidification in commercial buildings with chilled/hot water AHU systems is to overcool return + supply air to dewpoint, and then reheat before supply to zone. This is energy inefficient, with reheat often being gas-fired. To reduce energy consumption, building operators will often operate at little-to-no outside air, sacrificing IAQ. Decarbonizing commercial buildings requires solutions to reduce and fully electrify dehumidification energy consumption. The Altaire ADAPT and Conservant HEDS systems aim to solve this problem by decoupling humidity control from cooling reduces energy consumption while enabling improved IAQ management.
Original languageAmerican English
PublisherNational Laboratory of the Rockies (NLR)
StatePublished - 2023

Publication series

NamePresented at the 2023 Department of Energy (DOE) Building Technologies Office (BTO) Peer Review, 24-28 April 2023, Arlington, Virginia

NLR Publication Number

  • NREL/PO-5500-85720

Keywords

  • commercial buildings
  • dehumidification
  • field demonstration
  • separate sensible and latent cooling

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