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Energies
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Research in Building Physics and Renewable Energy
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Research in Building Physics and Renewable Energy

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

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 4621

Special Issue Editors

Dr. Rafał Figaj

E-Mail Website
Guest Editor
Department of Sustainable Energy Development, Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Krakow, Poland
Interests: renewable energy and environment protection; renewable energy technologies; photovoltaics; energy modeling; energy systems and buildings simulations; hydrid and multigeneration energy systems, building energy systems; energy saving in buildings
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Mariusz Filipowicz

E-Mail Website
Guest Editor
Department of Sustainable Energy Development, Faculty of Energy and Fuels, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
Interests: renewable energy technologies; energy conversion; photovoltaics; solar energy; biomass; wind energy; hybrid energy systems; polygeneration; waste heat recovery; energy modelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Buildings and renewable energy sources are one of the most important sectors leading the transformation of the energy system paradigm. According to the International Energy Agency data, the building-related sector is responsible for around one-third of the global energy consumption and about 15% of the CO2 emissions directly emitted into the atmosphere. This snapshot of the building sector is also accompanied by a global increase in building energy demands, which rises year by year due to new building and construction growth in developed and developing countries, increased access to energy grids, improvements in the standard of living and other related factors. On the one hand, the energy sector is shaped by the expansion of renewable energy sources, with the share rates of these renewable sources in the energy mix of countries increasing year by year due to their application at small and large scales. In this framework, the role of both the building sector and renewable energy sources is paramount in order to achieve the goal of high energy effectiveness and efficiency coupled with decreasing CO2 emissions.

The increasing attention given by researchers to buildings and renewable energy source applications is determining the advances in the creation of new construction concepts, modeling, design, the adoption of new materials and management. Thus, the conventional way of thinking about buildings and renewables is being positively altered by topics such as near-zero or plus energy buildings, smart energy systems, intelligent building, hybridization of energy sources, electrical and thermal energy storage, aimed retrofit interventions and optimization of installation operations. Significant research efforts are focused on these topics in order to provide new theoretical and practical knowledge.

The scope of this Special Issue is to invite authors who wish to publish their novel research studies regarding theoretical approaches, modeling methods, design criteria, measurement and experimental methods, application of new materials and technologies, complex analyses and optimization in buildings and/or renewable energy systems.

Dr. Rafał Figaj
Prof. Dr. Mariusz Filipowicz
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

  • buildings
  • renewable energy systems
  • materials
  • novel technologies
  • emission reduction
  • energy efficiency
  • modeling
  • design
  • optimization

Published Papers (3 papers)

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Research

13 pages, 4081 KiB  
Article
Computational Analysis of the Automation Strategies of Temperatures of Supplied Air, Chilled and Condensation Water in Commercial Buildings
by Javier Diaz-Valdivia and Flávio A. S. Fiorelli
Energies 2023, 16(8), 3445; https://doi.org/10.3390/en16083445 - 14 Apr 2023
Viewed by 793
Abstract
The automation strategies currently used in HVAC systems do not control the system temperature variables (supplied air, chilled, and condensation water temperatures) in an optimized way. Normally, these temperatures are fixed in design conditions, or vary according to the weather conditions. However, studies [...] Read more.
The automation strategies currently used in HVAC systems do not control the system temperature variables (supplied air, chilled, and condensation water temperatures) in an optimized way. Normally, these temperatures are fixed in design conditions, or vary according to the weather conditions. However, studies demonstrate that adequate control of these three temperatures can provide significant reductions in the energy consumption of the air conditioner system. Therefore, this work analyzes the benefits of individualized and integrated automation of these three variable temperatures in different tropical and subtropical weather conditions through computer simulation for a typical commercial building. The results of integrated automation show savings in consumption between 5.03% and 19.68% compared to a fixed control, and between 3.22% and 8.21% compared to a weather-based control alone, showing that the integrated strategies are better than both models adopted as market benchmarks. Full article
(This article belongs to the Special Issue Research in Building Physics and Renewable Energy)
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20 pages, 2749 KiB  
Article
Development and Tests of the Solar Air Heater with Thermal Energy Storage
by Krzysztof Sornek and Karolina Papis-Frączek
Energies 2022, 15(18), 6583; https://doi.org/10.3390/en15186583 - 08 Sep 2022
Cited by 5 | Viewed by 1423
Abstract
Passive solutions in buildings have recently been rediscovered because they allow the rational use of solar radiation, which promotes energy savings. Thermal energy gained from the sun may be stored in the form of sensible heat in accumulative solid materials in a building [...] Read more.
Passive solutions in buildings have recently been rediscovered because they allow the rational use of solar radiation, which promotes energy savings. Thermal energy gained from the sun may be stored in the form of sensible heat in accumulative solid materials in a building envelope. This paper proposes an innovative solar air heater that captures and accumulates solar energy during the day and releases it during the night. The analyzed system is based on inexpensive ceramic modules, which can be used to construct thermal storage walls or solar chimneys in modern buildings. Both configurations have been tested experimentally and by a numerical model in ArCADia BIM software. Experiments have been carried out in laboratory conditions using a specially developed prototype. Among other parameters, power transferred from the solar air heater to the ventilation air in different conditions has been analyzed. When airflow was set to 150 m3/h, the maximum power observed under stable working conditions was approx. 355.0 W when the developed solar air heater operated as the solar chimney, and approx. 165.0 W when it operated as the solar thermal wall. When airflow was set to 200 m3/h, the maximum power was approx. 385.0 W. Experimental results have been used to calculate the efficiency of the solar air heater in real conditions. The total efficiency in the case of the solar chimney was estimated as 0.25, while in the case of the thermal wall it was estimated as 0.78, which resulted in an annual reduction in energy usage at a level of 190.7 kWh and 556.1 kWh, respectively (4.8 and 14.0%). In practice, these values can be significantly higher due to the possibility of increasing the length and shape of the accumulation heat exchanger. Full article
(This article belongs to the Special Issue Research in Building Physics and Renewable Energy)
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33 pages, 5535 KiB  
Article
A Novel Hybrid Polygeneration System Based on Biomass, Wind and Solar Energy for Micro-Scale Isolated Communities
by Rafał Figaj, Maciej Żołądek, Maksymilian Homa and Anna Pałac
Energies 2022, 15(17), 6331; https://doi.org/10.3390/en15176331 - 30 Aug 2022
Cited by 9 | Viewed by 1753
Abstract
The availability of freshwater and energy is a serious issue in remote and islanded areas, especially at a small scale, where there may not be the possibility to access the grid and/or water distribution systems. In this context, polygeneration systems operating on the [...] Read more.
The availability of freshwater and energy is a serious issue in remote and islanded areas, especially at a small scale, where there may not be the possibility to access the grid and/or water distribution systems. In this context, polygeneration systems operating on the basis of local, renewable energy sources can be an answer to the users’ demand for electricity, heating, cooling, and domestic hot water. The scope of the proposed paper was to investigate, numerically, the energy and economic feasibility of a novel hybrid polygeneration system powered by biomass, solar, and wind energy for a micro-district of households. The proposed system consists of a biomass-fueled steam cycle, wind turbine, photovoltaic field coupled with thermal and electrical energy storage, adsorption chiller, and a reverse osmosis water desalination unit. The system is also assisted by an LPG generator set running as backup. The system provides space heating and cooling, electrical energy, and fresh and domestic hot water to 10 households located on Pantelleria Island, Italy. The proposed system is modelled and simulated through TRNSYS software with realistic user demand. The energy and economic performance of the proposed system are assessed with respect to a reference system in different scenarios, taking into account islanded operation, connection to the grid, and biomass tariffs. The results show that the proposed system achieves an excellent primary energy saving performance in all the investigated scenarios, with savings of more than 94% for all the investigated scenarios. Excluding any kind of funding, in case of new investment for the system, the simple payback oscillates between 7 and 12 years, showing that the developed alternative is fairly valid with respect to traditional solutions. Full article
(This article belongs to the Special Issue Research in Building Physics and Renewable Energy)
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