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Going Beyond Code: Monitoring Disaggregated Energy And Modeling Detached Houses In Hawai`I

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Details

  • Journal Title:
    Buildings
  • Personal Author:
  • NOAA Program & Office:
  • Sea Grant Program:
    HAWAU (Hawaii Sea Grant)
  • Description:
    Hawai‘i was the first state to establish a statewide 100% renewable energy goal to be met by 2045. To address the potential impact of new residential construction, a team conducted field studies and developed whole-building energy models of detached houses in Hawai‘i. The goal was to inform the state, a major developer, and the Hawai‘i design community on how current residential design could be modified to meet the newly adopted energy codes and renewable energy goals. Seven houses with air-conditioning were monitored for disaggregated energy use, temperature, and humidity for one year. The building simulation software BEoptTM v.2.8 was used to conduct parametric analyses and cost/energy optimizations to evaluate design options. The energy-optimized model for this hot-humid climate included the following: increasing the efficiency of the air-conditioning system; utilizing ceiling fans with occupancy sensors while increasing the thermostat set-point; a light-colored exterior finish and roof; a radiant barrier; longer eaves; and Energy Star appliances. The energy-optimized model reduced the annual site energy by approximately 47.1% compared to the model that minimally complied with the International Energy Conservation Code 2015. A 4.5-kW grid-tied photovoltaic array would achieve a net-zero annual site energy value.
  • Keywords:
  • Source:
    Buildings 2020, 10(7), 120
  • DOI:
  • Sea Grant Document Number:
    HAWAU-R-20-023
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA18OAR4170076
  • Place as Subject:
    Hawaii
  • Rights Information:
    CC BY
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha256:f8e63f0e116d090346c31f08dfbd7e53bfba834b062e205fa50e210e71b99787
  • Download URL:
  • File Type:
    Filetype[PDF - 2.86 MB ]

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