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Utilisation of Mass and Night Ventilation in Decreasing Cooling Load Demand

Author

Listed:
  • Michael Darmanis

    (Faculty of Mechanical Engineering, Istanbul Technical University, Beyoğlu, Istanbul 34437, Turkey
    Laboratory of Fluid Mechanics, Department of Mechanical Engineering, University of West Attica, GR12244 Athens, Greece)

  • Murat Çakan

    (Faculty of Mechanical Engineering, Istanbul Technical University, Beyoğlu, Istanbul 34437, Turkey)

  • Konstantinos P. Moustris

    (Laboratory of Fluid Mechanics, Department of Mechanical Engineering, University of West Attica, GR12244 Athens, Greece)

  • Kosmas A. Kavadias

    (Laboratory of Soft Energy Applications & Environmental Protection, Department of Mechanical Engineering, University of West Attica, GR12244 Athens, Greece)

  • Konstantinos-Stefanos P. Nikas

    (Laboratory of Fluid Mechanics, Department of Mechanical Engineering, University of West Attica, GR12244 Athens, Greece
    Laboratory of Heat Transfer, Department of Mechanical Engineering, University of West Attica, GR12244 Athens, Greece)

Abstract

The building sector consumes 36% of the world’s energy and produces around 40% of energy-related carbon emissions. While the building industry moves towards a zero net greenhouse-gas emission policy, ventilation is, and will be, a necessity for the preservation of air quality—especially in climates defined by unsavoury conditions. Therefore, a “mixing mode” cooling system was employed to lower the required energy consumption at an earthen building situated in the premises of Istanbul Technical University. A room of the high-mass earthen building was monitored under different ventilation and shading conditions. Night ventilation was conducted using two modes, 3.2 and 2.3 air changes per hour, and the air conditioning unit, operating from 08:00 to 17:00, had a set temperature of 23 ∘ C . Night ventilation was somewhat impactful, reducing the average expected cooling energy demand up to 27%. Furthermore, the earthen building proved to be extremely effective on moderating extremes of temperature under non-ventilated conditions. During a rather hot day, with an outdoor maximum temperature of 35 ∘ C , the indoor maximum temperature of the high-mass building was only 25 ∘ C , namely within thermal comfort levels. The diurnal temperature proved to be key in the effective application of night ventilation.

Suggested Citation

  • Michael Darmanis & Murat Çakan & Konstantinos P. Moustris & Kosmas A. Kavadias & Konstantinos-Stefanos P. Nikas, 2020. "Utilisation of Mass and Night Ventilation in Decreasing Cooling Load Demand," Sustainability, MDPI, vol. 12(18), pages 1-11, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7826-:d:417358
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    Citations

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    Cited by:

    1. Mamdooh Alwetaishi & Ashraf Balabel & Ahmed Abdelhafiz & Usama Issa & Ibrahim Sharaky & Amal Shamseldin & Mohammed Al-Surf & Mosleh Al-Harthi & Mohamed Gadi, 2020. "User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation," Sustainability, MDPI, vol. 12(22), pages 1-23, November.
    2. Robert C. Vella & Charles Yousif & Francisco Javier Rey Martinez & Javier María Rey Hernandez, 2022. "Prioritising Passive Measures over Air Conditioning to Achieve Thermal Comfort in Mediterranean Baroque Churches," Sustainability, MDPI, vol. 14(14), pages 1-23, July.

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