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Mixed-Mode Ventilation in HVAC System for Energy and Economic Benefits in Residential Buildings

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  • Huyen Do

    (Faculty of Project Management, The University of Danang—University of Science and Technology, Danang 550000, Vietnam)

  • Kristen S. Cetin

    (Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA)

Abstract

In the U.S., approximately 47% of the total electricity use comes from residential buildings. Most of the residential buildings use HVAC system to ventilate, cool, or heat the indoor environmental spaces mechanically, rather than using natural outdoor air in transition seasons, even though the outdoor environmental conditions are favorable for indoor thermal comfort. In this case, an HVAC system using mixed-mode ventilation with an appropriate ratio of using indoor air and outdoor air could decrease the energy use in residential buildings. This research uses high-granular HVAC electricity use data with indoor thermostat data and outdoor weather data from residential buildings in Austin, Texas, to evaluate the benefits of energy and economics when using HVAC mixed-mode ventilation in spring and fall transition seasons. The results demonstrate that the household owners could save approximately 150.79 kWh of total HVAC energy use and 24.41% of HVAC cost in spring transition months (April/May), and similarly, 143.86 kWh of energy use and 27.2% cost savings in fall transition months (October/November). The results could support further study to use automatically operated windows for natural ventilation to reduce energy use in residential buildings toward sustainable development.

Suggested Citation

  • Huyen Do & Kristen S. Cetin, 2022. "Mixed-Mode Ventilation in HVAC System for Energy and Economic Benefits in Residential Buildings," Energies, MDPI, vol. 15(12), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:12:p:4429-:d:841531
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    References listed on IDEAS

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    1. Oropeza-Perez, Ivan & Østergaard, Poul Alberg, 2014. "Potential of natural ventilation in temperate countries – A case study of Denmark," Applied Energy, Elsevier, vol. 114(C), pages 520-530.
    2. Chen, Jianli & Brager, Gail S. & Augenbroe, Godfried & Song, Xinyi, 2019. "Impact of outdoor air quality on the natural ventilation usage of commercial buildings in the US," Applied Energy, Elsevier, vol. 235(C), pages 673-684.
    3. Martins, Nuno R. & Carrilho da Graça, Guilherme, 2017. "Impact of outdoor PM2.5 on natural ventilation usability in California’s nondomestic buildings," Applied Energy, Elsevier, vol. 189(C), pages 711-724.
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    Cited by:

    1. Lichen Su & Jinlong Ouyang & Li Yang, 2023. "Mixed-Mode Ventilation Based on Adjustable Air Velocity for Energy Benefits in Residential Buildings," Energies, MDPI, vol. 16(6), pages 1-17, March.

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