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Dr. Apostolos Michopoulos

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Energy and Environmental Design of Buildings Research Lab., Faculty of Engineering, University of Cyprus, 2109 Nicosia, Cyprus
Interests: conventional and renewable energy sources; hybrid and conjugated energy systems; HVAC systems; energy savings; energy management; implementation of energy technologies in buildings, built environment, and industry; energy and environmental assessment; technoeconomic analysis; efficient energy use; thermal comfort; indoor air quality
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Special Issue Information

Dear Colleagues,

The transformation of the energy generation, transmission, distribution, and supply systems from the centralized concept-form into the decentralized–local one is the main target for the current and upcoming decades. This challenge is directly associated with a number of sustainable development goals set by the UN and supports the meeting of energy and environmental targets of UN Framework Convention on Climate Change (UNFCCC). Within this framework, a number of new and improved energy technologies ranging from small- to large-scale capacity and application supported by energy savings and improvement actions is going to be the key and master tool.

The aim of this Special Issue is to shade light onto not only the new findings and proposals of the pure innovative and fundamental research, but also to become a discussion forum for the applied research outcomes. Results from innovative applications and case studies, dealing with the implementation of emerging and efficiency-improving energy technologies at the supply and demand side in any scale and sector are also welcome. The topic of the emerging energy technologies and energy savings is one of the most inter-, trans-, and multidisciplinary fields encompassing a large number of scientists from engineering to business, social to environmental sciences, governance to the market analysts and policy makers, and other closely-related areas.

The contribution of this Special Issue would be its focus on the:

New developments of conventional and RES-based energy technologies;
Efficient manner of the implementation of the newest, innovative, conjugated, and hybrid energy technologies in the current and future global energy systems;
New achievements moving towards affordable and clean energy sectors;
Policy and financial schemes for further supporting the implementation high-edge energy technologies, such as hydrogen, ocean and wave, etc.;
Energy-saving projects at district and city scale focusing on the development of the future sustainable cities and communities.

All the above will serve as a basis for sustainable growth and development that would take actions against the climate change challenges and accelerate energy system transformation into a low carbon and highly efficient one.

Dr. Apostolos Michopoulos
Guest Editor

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. Sustainability 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

Solar, wind and geothermal energy and technology
Hydrogen energy and technology
Ocean, wave, and tidal energy and technology
Biomass and bioenergy technologies
Conventional high-efficiency energy technologies
Conjugated and hybrid energy technologies
Waste-to-energy technologies
Energy saving
Energy efficiency
Energy management
Environmental sustainability
Economical sustainability
Social sustainability
Energy technologies applications’ at district and city scale
Industrial improvements and sustainability
Clean and low carbon industrial processes

Published Papers (2 papers)

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Research

19 pages, 6627 KiB

Open AccessArticle

3D IoT System for Environmental and Energy Consumption Monitoring System

by Bruno Mataloto, Daniel Calé, Kaiser Carimo, Joao C. Ferreira and Ricardo Resende

Sustainability 2021, 13(3), 1495; https://doi.org/10.3390/su13031495 - 01 Feb 2021

Cited by 14 | Viewed by 3615

Abstract

Energy consumption in buildings depends on the local climate, building characteristics, and user behavior. Focusing on user interaction, this research work developed a novel approach to monitoring and interaction with local users by providing in situ context information through graphic descriptions of energy consumption and indoor/outdoor environment parameters: temperature, luminosity, and humidity, which are routinely measured in real-time and stored to identify consumption patterns and other savings actions. To involve local users, collected data are represented in 3D color representation using building 3d models. A simplified color scale depicts environmental comfort (low/comfortable/high temperature/relative humidity) and energy consumption (above/below usual patterns). We found that these indices induced user commitment and increased their engagement and participation in saving actions like turning off lights and better management of air conditioning systems. Full article

(This article belongs to the Special Issue Emerging Energy Technologies and Energy Savings)

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17 pages, 2410 KiB

Open AccessArticle

Mass Transfer Performance Study for CO₂ Absorption into Non-Precipitated Potassium Carbonate Promoted with Glycine Using Packed Absorption Column

by Nur Farhana Ajua Mustafa, Azmi Mohd Shariff, Wee Horng Tay, Hairul Nazirah Abdul Halim and Siti Munirah Mhd Yusof

Sustainability 2020, 12(9), 3873; https://doi.org/10.3390/su12093873 - 09 May 2020

Cited by 19 | Viewed by 3297

Abstract

The removal of carbon dioxide (CO₂) at offshore operation requires an absorption system with an environmentally friendly solvent that can operate at elevated pressure. Potassium carbonate promoted with glycine, PCGLY, is a green solvent that has potential for offshore applications. For high solvent concentrations at elevated pressure, the by-product of CO₂ absorption consists of precipitates that increase operational difficulty. Therefore, this study was done to assess the CO₂ absorption performance of non-precipitated PCGLY with concentration 15wt%PC+3wt%GLY, which is known to have comparable solubility performance with MDEA. A packed absorption column was used to identify the CO₂ removal efficiency, mass transfer coefficient in liquid film,

k_{l} a_{e},

and overall volumetric mass transfer coefficient,

K_{G} a_{v}

. A simplified rate-based model was used to determine

k_{l} a_{e}

and

K_{G} a_{v}

based on the experimental data with a maximum MAE value, 0.057. The results showed that liquid flow rates and liquid temperature gives significant effects on the

k_{l} a_{e}

and

K_{G} a_{v}

profile, whereas gas flow rate and operating pressure had little effect. The CO₂ removal efficiency of PCGLY was found to be 77%, which was only 2% lower than 1.2 kmol/m³ MDEA.

K_{G} a_{v}

of PCGLY is comparable with MDEA. The absorption process using PCGLY shows potential in the CO₂ sweetening process at offshore. Full article

(This article belongs to the Special Issue Emerging Energy Technologies and Energy Savings)

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