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Energies
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Renewable Energy Systems for Sustainable Buildings
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Renewable Energy Systems for Sustainable Buildings

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "G: Energy and Buildings".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 3613

Special Issue Editors

Dr. Bae Sangmu

E-Mail Website
Guest Editor
Research Institute of Industrial Technology, Pusan National University, Geumjeong-gu 46241, Busan, Republic of Korea
Interests: renewable energy systems, photovoltaics, solar thermal energy, ground source heat pumps, zero energy buildings, sustainable buildings
Dr. Chae Hobyung

E-Mail Website
Guest Editor
Research Institute of Industrial Technology, Pusan National University, Geumjeong-gu 46241, Busan, Republic of Korea
Interests: renewable energy systems, ground source heat pumps, thermal response tests, data analysis, building simulation
Prof. Dr. Yujin Nam

E-Mail Website
Guest Editor
Department of Architectural Engineering, Pusan National University, Geumjeong-gu, Busan, Republic of Korea
Interests: building energy; building simulation; renewable energy systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Recently, the concept of the zero energy building (ZEB) has received increasing interest around the world, in which energy production using renewable energy systems has become an essential factor for its realization. Moreover, building-integrated systems with renewable energy resources have also been in the spotlight as leading techniques in the field of building energy. Governments in leading countries have begun to move toward targets for zero energy buildings, and supported initiatives or research projects for the use of renewable energy systems. Under the political support for the realization of ZEB, the need for high-efficient design, cost-efficient installation, and an optimum control method for renewable energy systems is also significantly growing.

This Special Issue focuses on all the renewable energy systems that can be used in buildings to contribute to enhanced scientific and multidisciplinary studies as well as future applied studies. The topic covers specific areas of renewable energy systems in buildings relevant to physical science and applied engineering. We invite papers on the fundamental approach, novel technical developments, analytical, experimental, assessment, as well as reviews. This Special Issue aims to share research knowledge and skills, to promote new applied research, and to encourage other challenges in renewable energy systems in buildings.

Dr. Bae Sangmu
Dr. Chae Hobyung
Prof. Dr. Yujin Nam
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 submissions that pass pre-check are 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 2600 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.

Keywords

  • renewable energy systems
  • photovoltaics
  • BIPV (building integrated photovoltaic)
  • solar thermal energy
  • photovoltaic-thermal
  • ground source heat pumps
  • zero energy building
  • building energy simulation

Published Papers (3 papers)

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Research

22 pages, 9410 KiB  
Article
Study of Thermal Inertia in the Subsoil Adjacent to a Civil Engineering Laboratory for a Ground-Coupled Heat Exchanger
by Raúl Antonio Gutiérrez-Durán, Luciano. A. Cervantes, Dagoberto López López, Juan Peralta-Jaramillo, Emerita Delgado-Plaza, Guido Abril-Macias, Pablo Limon-Leyva and Ian Sosa-Tinoco
Energies 2023, 16(23), 7756; https://doi.org/10.3390/en16237756 - 24 Nov 2023
Viewed by 973
Abstract
This document presents a study of thermal inertia in the subsoil adjacent to the Civil Engineering laboratory of the Technological Institute of Sonora (ITSON) in the south of Sonora, Mexico, in service of the development of a solution proposal of a ground-coupled air [...] Read more.
This document presents a study of thermal inertia in the subsoil adjacent to the Civil Engineering laboratory of the Technological Institute of Sonora (ITSON) in the south of Sonora, Mexico, in service of the development of a solution proposal of a ground-coupled air heat exchanger for the cooling months. The research was divided into three phases: first, the monitoring of temperature in 10 layers of the ground; second, the analysis of thermal ground properties; and last, the design and simulation of a ground-coupled air heat exchanger. The objectives were to determine the variation in the thermal inertia of the soil with depth and over time and to determine the optimum depth for a ground-coupled heat exchanger system. The second objective was to develop a design proposal for a ground-coupled heat exchanger for the university laboratory. We found that the optimum depth is 3.0 m in a soil with high-compressibility clay with 21% humidity and 0.152 W/mK of thermal conductivity. However, the proposed design identified the best depth for the cooling system as 3 m considering a ground-coupled heat exchanger for a volume of 222.2 m3, corresponding to the volume of the classrooms of the building. With this design, the approach was to reduce the temperature by at least 10 °C on the hottest day (41 °C) of the year studied. We concluded that with this kind of system, the climate of the building studied could reduce the thermal load of active AC systems and reduce the energy load by 59%. Full article
(This article belongs to the Special Issue Renewable Energy Systems for Sustainable Buildings)
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25 pages, 5522 KiB  
Article
Analysis of the Energy and Economic Effects of Green Remodeling for Old Buildings: A Case Study of Public Daycare Centers in South Korea
by Jeong-Heum Cho, Sangmu Bae and Yujin Nam
Energies 2023, 16(13), 4961; https://doi.org/10.3390/en16134961 - 26 Jun 2023
Viewed by 1105
Abstract
In South Korea, green remodeling policies have been promoted to improve the energy performance of buildings, especially old buildings. Moreover, simultaneous improvement of both energy and structural performance has emerged as an important issue. Although several proposals have been made by different governments [...] Read more.
In South Korea, green remodeling policies have been promoted to improve the energy performance of buildings, especially old buildings. Moreover, simultaneous improvement of both energy and structural performance has emerged as an important issue. Although several proposals have been made by different governments for the improvement of energy and structural performance, most were related to technological development or construction methods. Therefore, to simultaneously improve the energy and structural performance of old buildings, in this study, we performed an analysis to evaluate the feasibility of improvement based on an actual case of green remodeling of an old building. In addition, the expected social effects were analyzed by examining the effect of fiscal expenditure on employment, considering personnel and operating expenses. As a result, primary energy consumption was reduced by approximately ≥48% after green remodeling, and CO2 emissions during the building operation stage were reduced by approximately ≥46%. When green remodeling and structural retrofitting were performed concurrently, the construction cost was reduced by approximately ≥27% when overlapping items in the construction schedule were optimized. These findings are relevant to the setting of goals and the establishment of strategies during green remodeling and structural retrofitting of old buildings. Full article
(This article belongs to the Special Issue Renewable Energy Systems for Sustainable Buildings)
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29 pages, 16640 KiB  
Article
Modeling of an Integrated Renewable-Energy-Based System for Heating, Cooling, and Electricity for Buildings
by Marika Pilou, George Kosmadakis and George Meramveliotakis
Energies 2023, 16(12), 4691; https://doi.org/10.3390/en16124691 - 13 Jun 2023
Cited by 1 | Viewed by 1134
Abstract
An integrated numerical model that describes the operation of a renewable-energy-based system for a building’s heating, cooling, and domestic hot water needs is described in this study. The examined energy system includes a vapor compression multi-source heat pump, PVT collectors, borehole thermal energy [...] Read more.
An integrated numerical model that describes the operation of a renewable-energy-based system for a building’s heating, cooling, and domestic hot water needs is described in this study. The examined energy system includes a vapor compression multi-source heat pump, PVT collectors, borehole thermal energy storage, and water tanks. Energy balance equations for the collectors and the tanks are coupled with correlations for the heat pump and the piping losses within a thermal network approach. The non-linear system of equations that arises is solved by employing in-house software developed in Python v. 3.7.3. The performance of the numerical tool is validated against measurements collected during the pilot operation of such a system installed in Athens (Greece) for two 5-day periods (summer and winter). It is shown that the proposed model can predict, both qualitatively and quantitatively, the building’s energy system performance, whereas limited deviations from the experimental findings are mostly observed when highly transient phenomena occur. The numerical tool is designed with flexibility in mind and can be easily adapted to accommodate additional energy-system configurations and operational modes. Thus, it can be utilized as a supporting decision tool for new energy systems’ designs and the optimization of existing ones. Full article
(This article belongs to the Special Issue Renewable Energy Systems for Sustainable Buildings)
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