Petros Iliadis

Democritus University of Thrace

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Nikolaos Nikolopoulos

Centre for Research and Technology Hellas

Evangelos Bellos

University of West Attica

Komninos Angelakoglou

Centre for Research and Technology Hellas

Konstantinos Atsonios

Centre for Research and Technology Hellas

Renos Rotas

Centre for Research and Technology Hellas

Ioannis Mamounakis

Centre for Research and Technology Hellas

Athanasios Nesiadis

Centre for Research and Technology Hellas

Angeliki Kitsopoulou

National Technical University of Athens

Nikolaos Ziozas

Centre for Research and Technology Hellas

Elias B. Kosmatopoulos

Democritus University of Thrace

Cooperative Institutions

Centre for Research and Technology Hellas

National Technical University of Athens

Aristotle University of Thessaloniki

Democritus University of Thrace

University of West Attica

University of Patras

Fondazione Bruno Kessler

Imperial College London

National and Kapodistrian University of Athens

Utrecht University

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Energy analysis and environmental impact assessment for self-sufficient non-interconnected islands: The case of Nisyros island

Journal of Cleaner Production (2024)

Niki Skopetou P. Zestanakis Renos Rotas Petros Iliadis Charalampos Papadopoulos

10.1016/j.jclepro.2024.141647

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Citations (1)

Holistic renovation of a multi-family building in Greece based on dynamic simulation analysis

Journal of Cleaner Production (2022)

Evangelos Bellos Petros Iliadis Christos Papalexis Renos Rotas Ioannis Mamounakis

Dynamic simulation

10.1016/j.jclepro.2022.135202

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Citations (13)

Dynamic modeling and energy analysis of renewable heating and electricity systems at residential buildings using phase change material based heat storage technologies

Journal of Energy Storage (2020)

Ioannis Violidakis Konstantinos Atsonios Petros Iliadis Nikolaos Nikolopoulos

Renewable heat

Phase-change material

Storage heater

10.1016/j.est.2020.101942

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Citations (18)

Dynamic Energy Analysis of Different Heat Pump Heating Systems Exploiting Renewable Energy Sources

Sustainability (2023)

Angeliki Kitsopoulou Antonis Zacharis Nikolaos Ziozas Evangelos Bellos Petros Iliadis

Renewable energy source-fed heat pumps (HPs) may perform up to very high-efficiency standards, offering a promising tool in the wider residential heat decarbonization effort. In this context, this paper investigates different heating configurations utilizing various renewable thermal sources in conjunction with an HP-based system in order to determine the optimal configuration in terms of efficiency, using an existing, fully functioning residential building in Zaragoza, Spain, as our case study, comprising 40 dwellings. Four different HP configurations are investigated:, (i) an air-source system, (ii) a ground-source system, (iii) a dual-source system with solar thermal collectors, and (iv) a triple-source system based on solar, geothermal, and ambient sources. For the purpose of such investigation, detailed dynamic energy simulations are conducted through the use of the INTEMA.building tool (developed in Modelica), applying a multi-objective optimization process that aims at minimizing both the annual electricity consumption and the net present cost. It is demonstrated that the renewable thermally driven HPs are more efficient than the conventional, air-source ones, with the seasonal coefficient of performance increasing by 9.98% (ground source), 4.57% (dual source), and 17.40% (triple source), compared to the air-source heat pump system. Finally, it is revealed (via integrated techno-economic analyses) that the most effective and economical design is the dual source system, while the most expensive is the ground-source configuration. These findings can guide the ongoing design efforts on green residential heat solutions at both research and commercial implementation level.

Modelica

Heating system

Energy source

Renewable heat

10.3390/su151411054

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Citations (7)

Energy management and techno‐economic assessment of a predictive battery storage system applying a load levelling operational strategy in island systems

International Journal of Energy Research (2020)

Petros Iliadis Stefanos Ntomalis Konstantinos Atsonios Athanasios Nesiadis Nikolaos Nikolopoulos

In the present study, a predictive battery energy storage system (BESS) for application in geographical non-interconnected islands with high renewable energy penetration is proposed, capable of performing load levelling. The system under consideration is composed of diesel and heavy oil generators, a photovoltaic farm, and a small wind turbine. The proposed solution integrates machine learning (ML) methods for the forecasting of load and intermittent solar and wind power productions, alongside a custom scheduling algorithm, which calculates the necessary BESS setpoints that accomplish the desired levelling effect. An important feature of the scheduling algorithm is that the charge and discharge energy amounts of each day are by design equal and independent of the forecasts' accuracy. This aspect enables economic investigations to identify the appropriate BESS capacity for the particular system, also taking into account the battery's capacity degradation. The overall system is modelled and simulated utilizing the open-source languages Python and Modelica. Simulations presented a 9.8% peak-to-mean ratio (PMR) reduction of the thermal plant's load. Furthermore, economic investigations estimated a marginal BESS cost of 287.1 €/kWh revealing the financial viability of the proposed integrated system, in at least the case of geographical islands.

Levelling

10.1002/er.5963

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Citations (34)

Αn integrated life cycle assessment and life cycle costing approach towards sustainable building renovation via a dynamic online tool

Applied Energy (2023)

Vasilis Apostolopoulos Ioannis Mamounakis Andreas Seitaridis Nikolas Tagkoulis Dimitrios‐Sotirios Kourkoumpas

Retrofitting

Building Information Modeling

Embodied Energy

10.1016/j.apenergy.2023.120710

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Citations (33)

Smart energy management algorithm for load smoothing and peak shaving based on load forecasting of an island’s power system

Applied Energy (2019)

Spyridon Chapaloglou Athanasios Nesiadis Petros Iliadis Konstantinos Atsonios Nikolaos Nikolopoulos

Peaking power plant

Load profile

Smoothing

Peak demand

Electrical load

10.1016/j.apenergy.2019.01.102

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Citations (137)

Energy Performance Analysis of the Renovation Process in an Italian Cultural Heritage Building

Sustainability (2024)

Nikolaos Ziozas Angeliki Kitsopoulou Evangelos Bellos Petros Iliadis Dimitra Gonidaki

Renovating buildings with cultural heritage significance is an important step toward achieving sustainability in our cities. The benefits are not only energy-related but also encompass social aspects that make these renovations a high apriority. The present work investigates the renovation process of a cultural heritage building in the Municipality of Trento in Italy, specifically focusing on achieving energy savings and renewable energy integration by implementing various renovation actions. These renovation actions include improvements to the building envelope, such as roof insulation and window replacements. Additionally, the renovation actions for active systems involve the installation of a ground-source heat pump for heating/cooling coupled with a borehole thermal energy storage system, which is an innovative technology for the renovation of cultural heritage buildings. The electrical systems of the building are upgraded through the addition of standard rooftop photovoltaics, innovative building-integrated photovoltaics (shingles), and the installation of an LED lighting system. The baseline and the renovation scenarios are studied using the dynamic simulation tool INTEMA.building, written in the programming language Modelica. This tool simulates both the building envelope and the energy systems with a high level of detail, using advanced control systems and adjustable time steps. According to the simulation analysis, the primary energy demand is reduced by 30.49%, the final energy demand by 36.74%, and the net electricity demand by 8.72%. Results from this study can be useful to interested stakeholders (e.g., building owners, architects, construction companies, public agents, and urban planners) dealing with the renovation of cultural heritage and protected buildings. Also, the results can be exploited for estimating energy savings by applying advanced renovation strategies for cultural heritage buildings.

10.3390/su16072784

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Citations (1)

Dynamic investigation of centralized and decentralized storage systems for a district heating network

Journal of Energy Storage (2022)

Evangelos Bellos Petros Iliadis Christos Papalexis Renos Rotas Nikolaos Nikolopoulos

Heating system

Modelica

Component (thermodynamics)

10.1016/j.est.2022.106072

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Citations (15)