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

Bellos, Evangelos; Iliadis, Petros; Papalexis, Christos; Rotas, Renos; Mamounakis, Ioannis; Sougkakis, Vasileios; Νikolopoulos, Nikos; Kosmatopoulos, Elias B.

doi:10.1016/j.jclepro.2022.135202

Cited by 12 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A typical profile representing the daily hot water demand distribution is shown in Figure 4, which considers a variable demand distribution throughout the day that keeps up with the occupancy profile of the building. The tap water coming from the network has an annual mean temperature of around 12 • C, and a typical water temperature variation during the year was selected [33]. Electrical heaters cover the DHW demand with an efficiency of 90%, including distribution losses.…”

Section: Energy System Descriptionmentioning

confidence: 99%

“…For the present analysis, the basic timestep is set to be 1 h, wherein the solver user is the Dassl solver [45] with 10 −4 tolerance. The INTEMA.building tool has been used in various studies investigating the thermal performance of buildings and the operation of their energy systems [33,42,46] by the authors of this paper. Additionally, the respective tool has also been compared with the TRNSYS 18 simulation software [33] and validated according to the European Standard EN15265 [47].…”

Section: Simulation Strategymentioning

confidence: 99%

See 1 more Smart Citation

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

Ziozas,

Kitsopoulou,

Bellos

et al. 2024

Sustainability

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Energy System Descriptionmentioning

confidence: 99%

Section: Simulation Strategymentioning

confidence: 99%

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

Ziozas,

Kitsopoulou,

Bellos

et al. 2024

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, the daily operating profile of the building follows the profile proposed in Ref. [33], which has also been considered in a previous work with the INTEMA.building tool [34]. The infiltration rate was selected at 0.4 air changes per hour (ACH), while the natural ventilation rate was at 0.4 ACH; these are typical values for a residential building.…”

Section: Description Of the Buildingmentioning

confidence: 99%

“…For the ASHP, only the operating cost for covering the space-heating demand was considered, while no initial investment costs were taken into account. Additionally, in the economic analysis, the electricity cost was considered to be (k el = 0.25 EUR /kWh el ) [34]. The lifetime project is chosen to be (N = 25 years) [40] and the discount factor was (r 0 = 2%) [58].…”

Section: Net Present Costmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2023

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Extending the concept of high-performance buildings to existing dwellings

Palma

Ramos

Delgado

et al. 2023

Energy and Buildings

View full text Add to dashboard Cite

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

Cited by 12 publications

References 32 publications

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

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

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

Extending the concept of high-performance buildings to existing dwellings

Contact Info

Product

Resources

About