IBPSA UK Conference paper (2020)

Conference paper presented in IBPSA-England Building Simulation and Optimisation Conference 2020

Available for download in NUIG repository and Zenodo.

Title: A novel ROM methodology to support the estimation of the energy savings under the Measurement and Verification protocol.

Language: English

Authors: Alessandro Piccinini (*1,2,3), Magdalena Hajdukiewicz (*1,2,3), Letizia D’Angelo (*1,2,3), Luis Miguel
Blanes (*1,2,3), Marcus M. Keane (*1,2,3)

*1: School of Engineering, College of Science and Engineering, National University of Ireland
Galway, Ireland
*2: Informatics Research Unit for Sustainable Engineering (IRUSE) Galway, Ireland
*3: Ryan Institute, National University of Ireland Galway, Ireland

Abstract: This paper presents a novel Reduced Order grey box Model (ROM) methodology, based on a Resistor-Capacitor (RC) network, which supports the creation of the baseline energy consumption and the estimation of energy savings due to Energy Conservation Measures (ECMs) under the Measurement and Verification protocol. Within this scope, a description of the RC network, including a calculation of the parameters’ needed to execute the ROM, are presented. This ROM methodology is demonstrated on an educational building located in Sant Cugat, Spain as part of the H2020 GEOFIT project. The results presented in this paper demonstrate that the ROM is sufficiently accurate for the creation of the baseline energy consumption and for estimating the energy savings of different ECMs.

Energies Article (2020)

Article pulished in Energies Journal (2020)

Title: An Integrated HBIM Simulation Approach for Energy Retrofit of Historical Buildings Implemented in a Case Study of a Medieval Fortress in Italy

Language: German

Authors: Cristina Piselli (*1,2) , Jessica Romanelli (*2), Matteo Di Grazia (*2), Augusto Gavagni (*2), Elisa Moretti (*1,2), Andrea Nicolini (*1,2), Franco Cotana (*1,2), Francesco Strangis (*2), Henk J. L. Witte (*3) and Anna Laura Pisello (*1,2).

*1: Department of Engineering, University of Perugia, 06125 Perugia, Italy.
*2: CIRIAF – Centro Interuniversitario di Ricerca sull’Inquinamento da Agenti Fisici, Interuniversity Research
Centre, University of Perugia, 06125 Perugia, Italy.
*3: Groenholland Geo-Energysystems, Valschermkade 26, 1059CD Amsterdam, The Netherlands

Abstract: The Italian building stock consists of buildings mainly constructed until the mid-20th century using pre-industrial construction techniques. These buildings require energy refurbishment that takes into account the preservation of their architectural heritage. In this view, this work studies an innovative integrated modelling and simulation framework consisting of the implementation of Historical Building Information Modeling (HBIM) for the energy retrofit of historical buildings with renewable geothermal HVAC system. To this aim, the field case study is part of a medieval complex in Central Italy (Perugia), as representative ancient rural offshore architecture in the European countryside. The system involves of a ground source heat pump, a water tank for thermal-energy storage connected to a low-temperature radiant system, and an air-handling unit. The building heating energy performance, typically influenced by thermal inertia in historical buildings, when coupled to the novel HVAC system, is comparatively assessed against a traditional scenario implementing a natural-gas boiler, and made inter-operative within the HBIM ad hoc platform. Results show that the innovative renewable energy system provides relevant benefits while preserving minor visual and architectural impact within the historical complex, and also in terms of both energy saving, CO2 emissions offset, and operation costs compared to the traditional existing system. The integrated HBIM approach may effectively drive the path toward regeneration and re-functioning of heritage in Europe.

BS Rome – IBPSA Paper (2019)

Presentation of GEOFIT at BS ROME – 16th IBPSA International COnference and Exhibition (2019)

Title: Environmental sustainability and Energy Efficiency in Historical Buildings: GeoFit Project Implementation in the Case Study of a medieval fortress in Perugia

Language: English

Authors: Jessica Romanelli (*1), Matteo Di Grazia(*1), Cristina Piselli (*1,2), Anna Laura Pisello (*1,2), Franco Cotana (*1,2)

*1: CIRIAF – Interuniversity Research Centre, University of Perugia, Italy
*2: Department of Engineering, University of Perugia, Italy

Abstract: Italian cities are mainly constituted by buildings constructed until the mid-20th century by pre-industrial construction techniques. A HVAC system for the energy retrofit of historical buildings is evaluated when applied in the case study of Sant’Apollinare. It consists of a ground source heat pump a water tank for thermal energy storage connected to a low-temperature radiant system and air handling unit. The building thermal-energy behavior, typically influenced by thermal inertia in historical buildings, and the novel HVAC system performance interactions are comparatively assessed together with more traditional scenarios. Energy demand decreases by about one third compared to the pre-retrofit situation.

Thermally driven heat pump development and testing


Within GEOFIT project, a novel heat pump will be developed, able to efficiently exploit geothermal energy to provide heat under several climates and conditions. To this aim, a hybrid configuration for a reversible heat pump is being developed: it consists in the coupling of a gas-driven adsorption cycle with a vapour compression cycle. In this way, the temperature lift on the vapour compression cycle that is commonly employed is reduced and the energy consumption of the component is lower. The proposed solution, that is modular and based on commercial components, is suitable for both new installations and retrofitting applications, allowing a high flexibility.

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Sustainable Places Proceedings (2018)

Presentation of GEOFIT at Sustainable Places (2018)

Title: Introducing GEOFIT: Cost-Effective Enhanced Geothermal Systems for Energy Efficient Building Retrofitting

Language: English

Authors: Thomas Messervey  (*1), Marco Calderoni (*1), Angel Font (*2), Mikel Borras (*3), Ray Sterling (*1),
David Martin (*4) and Zia Lennard (*1)

*1: R2M Solution, S.r.l.; Via Fratelli Cuzio 42, 27100 Pavia, Italy.
*2: COMSA Corporación de Infraestructuras, SL, 08014 Barcelona, Spain.
*3: IDP Ingeniería y Arquitectura Iberia S.L.U., Av. de Francesc Macià, 60, 08208 Sabadell, Barcelona, Spain.
*4: COMET GESINCO SL, C Calle unio, 32-LC, Mataro, 08302 Barcelona, Spain.

Abstract: GEOFIT, “Deployment of novel GEOthermal systems, technologies and tools for energy efficient building retrofitting,” is a recently launched 4-year H2020 project funded by the Innovation and Networks Executive Agency (INEA) under the call topic LCE-17-2017: Easier to install and more efficient geothermal systems for retrofitting buildings. GEOFIT is a part of INEA’s Energy Portfolio Low Carbon Economy (LCE), Renewable Energy Technologies (RET) and brings together 24 partners from 10 European countries to work on the development of novel and smart shallow geothermal systems. This paper introduces the project.