Energy Systems in Buildings and Occupant Comfort

Topic Information

Dear Colleagues,

The use of energy systems in buildings to promote occupant comfort with low energy consumption levels is an important multidisciplinary topic for the future development of more sustainable occupied spaces. The objective of this new multidisciplinary topic is to collect innovative research studies on energy systems for buildings and examine their impact on occupants’ comfort. Innovative experimental studies, numerical simulations, and state-of-the-art and other original research findings are invited. For this multidisciplinary topic, we are particularly interested in inviting papers focusing on, but not limited to, the following: (i) energy systems in buildings; (ii) sustainable and renewable energy applications; (iii) HVAC (Heating, Ventilating and Air-Conditioning) systems in occupied spaces; (iv) natural and mechanical ventilation systems; (v) occupant thermal comfort, local thermal discomfort and indoor air quality; (vi) passive and active strategies in buildings; (vii) energy efficiency in buildings; (viii) design and construction strategies for buildings. Studies of advances in numerical simulation and experimental techniques are also welcome.

Prof. Dr. Eusébio Z. E. Conceição
Prof. Dr. Hazim B. Awbi
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Buildings buildings	3.1	4.4	2011	14.9 Days	CHF 2600	Submit
CivilEng civileng	2.0	4.0	2020	27 Days	CHF 1400	Submit
Energies energies	3.2	7.3	2008	16.2 Days	CHF 2600	Submit
Sustainability sustainability	3.3	7.7	2009	19.3 Days	CHF 2400	Submit

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Published Papers (1 paper)

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All Buildings CivilEng Energies Sustainability

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28 pages, 4842 KB  

Open AccessArticle

Cooling Effects of Roof Greenings at Residential Buildings—Consideration of a Hydraulic Connection to the Interior

by Andreas Ratka, Wolfgang Ernst and Matthias Wörlein

CivilEng 2025, 6(4), 60; https://doi.org/10.3390/civileng6040060 - 10 Nov 2025

Viewed by 279

Abstract

Within the scope of this article is the presentation of a modelling and measurement approach for the effects of roof greenings and the application of the approach to evaluate the influence of roof greenings upon the thermal conditions inside a typical residential building. [...] Read more.

Within the scope of this article is the presentation of a modelling and measurement approach for the effects of roof greenings and the application of the approach to evaluate the influence of roof greenings upon the thermal conditions inside a typical residential building. It is shown that overheating in summer can be reduced, and thermal comfort for inhabitants can be increased. The cooling is caused by the transpiration of plants and by the evaporation of water from the substrate. Other relevant physical effects are the shading of plants and the increase in the heat capacity of the building. In state-of-the-art buildings, a layer with a high insulating effect is incorporated into the envelope. This leads to the effect that a huge fraction of the cooling power is taken from the outside of the building and only a smaller part is taken from the inside. In order to mitigate this decoupling, a hydraulic connection between the greening and the interior of the building is introduced. To evaluate the effect of the inside cooling, the difference in the number of yearly hours with overheating in residential buildings is estimated. In addition, the reduction in energy demand for the climatisation of a typical residential building is calculated. The used methods are as follows: (1) Performance of laboratory and free field measurements. (2) Simulation of a typical residential building, using a validated approach. In summary, it can be said that green roofs, in particular with hydraulic connections, can significantly increase the interior thermal comfort and potentially reduce the energy required for air conditioning. Full article

(This article belongs to the Topic Energy Systems in Buildings and Occupant Comfort)

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