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Applied Sciences
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Progress on Sustainable Energy Technologies for Building Applications
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Progress on Sustainable Energy Technologies for Building Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 5077

Special Issue Editors

Prof. Dr. Siddig Adam Omer

E-Mail Website
Guest Editor
University of Nottingham, Nottingham, UK
Interests: sustainable and renewable energy technologies; sustainable building technologies; building integrated renewable energy systems; refrigeration/cooling devices including ejector cooling; absorption and desiccant cooling system and thermoelectric devices; phase change materials and energy efficient systems
Prof. Dr. Hu Mingke

E-Mail Website
Guest Editor
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, Anhui, China
Interests: solar thermal; sky radiative cooling; solar PV/T; building integrated renewable energy systems

Special Issue Information

Dear Colleagues,

Sustainability is a term that is receiving considerable atttention in all areas of our life, and energy supply and use in buildings are some of the key elements of sustainable development. Therefore, the way we produce, supply and use energy is undergoing a major transformation in attempts to tackle issues of increasing rates of GHG emission and climate change. In achieving sustainable energy supply, current trends lean towards tapping into renewable and clean energy. Saving energy through the improvement and enhancement of energy conversion and utilisation processes is one way to reduce energy consumptions through energy efficiency measures. A considerable amount of research involving technological upgrades has been devoted to enhancing renewable energy conversion processes and reducing energy consumption in the building sector in the last two decades, and most of this expert knowledge and these findings are disseminated through a range of scientific journal and conference contributions. There is a massive volume of research output out there, which needs to be brought to the attention of stakeholders for the benefit of accelerating the process of laying down the fundamentals of sustainability in the energy sector.

This Special Issue will collate and compile the progress on the research, development, and application of sustainable energy technologies for buildings applications and any relevant sectors, bringing this to the attention of a wider audience across the globe in a concise form. This Special Issue will welcome research papers reporting critical review, theoretical investigation, laboratory and field trials of new innovations and developments of sustainable energy technologies for building applications. Manuscripts should be unpublished and report significant developments in this area.

Prof. Dr. Siddig Adam Omer
Prof. Dr. Hu Mingke
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. Applied Sciences 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 2400 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 integration with buildings
  • Sustainable energy integration with buildings
  • Sustainable technologies
  • Zero-energy buildings
  • Green building
  • Energy systems and technologies
  • Energy harvesting systems
  • Operational performance of energy systems
  • Operational performance of low-energy buildings
  • Operation and maintenance of low-energy buildings
  • Progress in sustainable energy technologies
  • Economic of environmentally friendly energy systems
  • Small-scale power and energy systems
  • Environmental impact analysis of sustainable technologies
  • New development in energy systems
  • Energy efficiency systems
  • Sustainability measures in energy systems
  • Sustainable applications
  • Energy storage and energy management systems
  • Hybrid energy systems
  • Energy systems modelling for sustainability
  • Integration of large-scale renewable energy into the grid system
  • Off-grid renewable energy integration
  • Energy distribution systems
  • Ejector cooling system
  • Desiccant cooling systems
  • Phase change material for building applications.

Published Papers (2 papers)

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Research

15 pages, 4170 KiB  
Article
Investigation on an Improved Household Refrigerator for Energy Saving of Residential Buildings
by Jingyu Cao, Qiliang Wang, Mingke Hu, Xiao Ren, Weixin Liu, Yuehong Su and Gang Pei
Appl. Sci. 2020, 10(12), 4246; https://doi.org/10.3390/app10124246 - 20 Jun 2020
Cited by 5 | Viewed by 2971
Abstract
The efficiency improvement of household refrigerators is of significance to electricity consumption reduction of residential buildings. The cold loss recovery in household refrigerators is a promising development direction. In this study, a refrigerator improved by heat pipes is designed to reduce the cold [...] Read more.
The efficiency improvement of household refrigerators is of significance to electricity consumption reduction of residential buildings. The cold loss recovery in household refrigerators is a promising development direction. In this study, a refrigerator improved by heat pipes is designed to reduce the cold loss at freezer walls to enhance the overall efficiency of the refrigerator. A complete steady-state mathematical model is built for characterizing its overall energy saving behaviors by introducing the real structural parameters of a Midea BCD-111 refrigerator and measured temperature boundary conditions. The performances of the improved refrigerator are investigated with typical operating states, variable ambient temperature, and heat pipe design. The simulative results indicate that the cold loss of the freezer of the improved refrigerator can be reduced by 8.3–16.5%, and the energy saving capability is relatively reliable. Results verify that the cold loss recovery of the improved refrigerator is feasible in various operating conditions. Full article
(This article belongs to the Special Issue Progress on Sustainable Energy Technologies for Building Applications)
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16 pages, 7312 KiB  
Article
Assessment of Performance Enhancement Potential of a High-Temperature Parabolic Trough Collector System Combining the Optimized IR-Reflectors
by Qiliang Wang, Hongxing Yang, Gang Pei, Honglun Yang, Jingyu Cao and Mingke Hu
Appl. Sci. 2020, 10(11), 3744; https://doi.org/10.3390/app10113744 - 28 May 2020
Cited by 2 | Viewed by 1837
Abstract
Heat collecting elements (HCEs) are the core components in the parabolic trough collector (PTC) system because photothermal conversion of the whole system occurs in the HCEs. However, considerable heat loss from the HCEs at high operating temperature exerts seriously negative impact on the [...] Read more.
Heat collecting elements (HCEs) are the core components in the parabolic trough collector (PTC) system because photothermal conversion of the whole system occurs in the HCEs. However, considerable heat loss from the HCEs at high operating temperature exerts seriously negative impact on the photothermal conversion efficiency of the PTC system and subsequent application systems. To effectively reduce the heat loss and thus enhance the overall performance of the PTC system, in our previous work, we proposed three kinds of novel HCEs by partially depositing different IR-reflector coatings on the inner and outer surfaces of the glass envelope. The infrared (IR)-reflector of actual transparent conductive oxide (TCO) film, IR-reflector with a fixed cutoff wavelength of 2.5 μm, and the IR-reflector with optimal cutoff wavelength showed extremely effective roles in the reduction of heat loss in HCEs. In this paper, the comprehensive energy and exergy performances of these three novel HCEs in a real 72 m small-scale PTC system are further investigated by the mathematical models established. Additionally, the comparisons among overall performances of the proposed HCEs under different direct solar irradiances are also carried out. The results show that the simulated data yields good consistence with the experimental results, and that all three of the novel HCEs achieve superior overall performance compared with the conventional HCEs. The PTC system installing the novel HCEs with the IR-reflector coating which possesses the optimal cutoff wavelength has the best energetic and exergetic efficiencies, which are significantly improved by 25.2% and 28.1% compared with the conventional HCEs at the solar irradiance of 800 W/m2 and inlet temperature of 580 °C. Moreover, the proposed novel HCEs have a much superior performance at lower solar irradiance. The performance-enhanced PTC system will play a significantly positive role in the performance improvement of the heating and cooling of buildings in the future. Full article
(This article belongs to the Special Issue Progress on Sustainable Energy Technologies for Building Applications)
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