Special Issue "Sustainable Buildings: Heating, Ventilation and Air-Conditioning"

A special issue of Energies (ISSN 1996-1073).

Deadline for manuscript submissions: 25 November 2020.

Special Issue Editors

Dr. John Kaiser Calautit
Guest Editor
Department of Architecture and Built Environment, University of Nottingham, Nottingham, UK.
Interests: sustainable buildings; passive technologies; computational fluid dynamics modelling; building energy simulation; thermal performance
Special Issues and Collections in MDPI journals
Dr. Hassam Nasarullah Chaudhry
Website SciProfiles
Guest Editor
Department of Architectural Engineering, Heriot-Watt University, P.O.Box 294 345 Dubai, U.A.E.
Interests: renewable and sustainable engineering systems; heat transfer; natural ventilation; thermal comfort; passive cooling and building aerodynamics

Special Issue Information

Dear Colleagues,

Building energy is a core component of cities and urban planning and has major social consequences, as well as climate change impacts. Buildings worldwide account for a surprisingly high 40% of global energy consumption, and the resulting carbon footprint, significantly due to the increasing use of heating, ventilation, and air-conditioning (HVAC). Energy consumption of the world is driven largely by residential use, with a major proportion of the electricity being consumed by the building sector. Mechanical HVAC units are common solutions for providing effective and adequate fresh air requirements. However, there is a need for substantial investment in optimizing mechanical systems for the highest efficiencies and re-engineering natural ventilation, to meet the global climate change targets outlined by the Paris Agreement in 2015. High-performing HVAC systems are very important from both the energy and economic perspectives. It has proven that the indoor environment has a significant influence on users’ comfort, productivity, and wellbeing and must be taken into account when designing HVAC systems. This Special Issue encourages researchers to address solutions to overcome the issue. Research and review papers of systems and technologies aiming to improve energy performance, air quality, and comfort are welcomed. Topics that could be covered include, but are not limited to the following:

  • Low-energy ventilation
  • Passive cooling and strategies
  • High-performance HVAC
  • Water heating and cooling systems
  • Heat pumps
  • Thermal comfort and air quality
  • Control and operation
  • Hybrid HVAC systems
  • Integration with renewables
  • Fault detection and diagnosis of HVAC systems
  • Intelligent approaches
  • Measurement and simulation methods
  • Modeling and optimization
  • Case studies and innovative approaches

Dr. John Kaiser Calautit
Dr. Hassam Nasarullah Chaudhry
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • Buildings
  • Indoor air quality
  • Thermal comfort
  • Demand response
  • Passive
  • Operation
  • Solar cooling
  • Ventilation

Published Papers (1 paper)

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Open AccessArticle
On the Ventilation Performance of Low Momentum Confluent Jets Supply Device in a Classroom
Energies 2020, 13(20), 5415; https://doi.org/10.3390/en13205415 - 16 Oct 2020
The performance of three different confluent jets ventilation (CJV) supply devices was evaluated in a classroom environment concerning thermal comfort, indoor air quality (IAQ) and energy efficiency. The CJV supply devices have the acronyms: high-momentum confluent jets (HMCJ), low-momentum confluent jets (LMCJ) and [...] Read more.
The performance of three different confluent jets ventilation (CJV) supply devices was evaluated in a classroom environment concerning thermal comfort, indoor air quality (IAQ) and energy efficiency. The CJV supply devices have the acronyms: high-momentum confluent jets (HMCJ), low-momentum confluent jets (LMCJ) and low-momentum confluent jets modified by varying airflow direction (LMCJ-M). A mixing ventilation (MV) slot jet (SJ) supply device was used as a benchmark. Comparisons were made with identical set-up conditions in five cases with different supply temperatures (TS) (16–18 °C), airflow rates (2.2–6.3 ACH) and heat loads (17–47 W/m2). Performances were evaluated based on DR (draft rating), PMV (predicted mean vote), ACE (air change effectiveness) and heat removal effectiveness (HRE). The results show that CJV had higher HRE and IAQ than MV and LMCJ/LMCJ-M had higher ACE than HMCJ. The main effects of lower Ts were higher velocities, DR (HMCJ particularly) and HRE in the occupied zone as well as lower temperatures and PMV-values. HMCJ and LMCJ produce MV conditions at lower airflow rates (<4.2 ACH) and non-uniform conditions at higher airflow rates. LMCJ-M had 7% higher HRE than the other CJV supply devices and produced non-uniform conditions at lower airflow rates (<3.3 ACH). The non-uniform conditions resulted in LMCJ-M having the highest energy efficiency of all devices. Full article
(This article belongs to the Special Issue Sustainable Buildings: Heating, Ventilation and Air-Conditioning)
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