Leveraging TRNSYS simulations of a single family house in Spain for renewable energy integration

Green Energy and Sustainability 2025;5(4):0008 | https://doi.org/10.47248/ges2505040008

Original Research Open Access

Leveraging TRNSYS simulations of a single family house in Spain for renewable energy integration

George Dogkas ¹ , Alexandros Tsimpoukis ¹ , Milen Pérez Cammañ ² , Jesús Samaniego Muñoz ² , Juan Carlos del Castillo Garcia ² , Ola Gustafsson ³ , Grigorios Itskos ¹ , Nikolaos Nikolopoulos ¹

1. Centre for Research & Technology Hellas, Chemical Process and Energy Resources Institute (CERTH, CPERI), 6th km Charilaou-Thermis, GR 570 01, Thermi, Greece
2. División de Energías, Fundación CARTIF, Parque Tecnológico de Boecillo 205, 47151 Boecillo, Valladolid, Spain
3. RISE Research Institutes of Sweden, Sven Hultins plats 5, 41258, Gothenburg, Sweden

Correspondence: George Dogkas

Academic Editor(s): Tony Roskilly, Georgios Martinopoulos, Georgia Kastrinaki, Hande Eryilmaz, Martin Roeb

Received: Aug 5, 2025 | Accepted: Oct 3, 2025 | Published: Oct 9, 2025

This article belongs to the Special Issue Selected Papers from the Conference ICRES 2025

Cite this article: Dogkas G, Tsimpoukis A, Cammañ MP, Samaniego Muñoz J, Garcia JCC, Gustafsson O, Itskos G, Nikolopoulos N. Leveraging TRNSYS simulations of a single family house in Spain for renewable energy integration. Green Energy Sustain. 2025;5(4):0008. https://doi.org/10.47248/ges2505040008

Abstract

A dynamic model was developed in TRNSYS® software package to simulate the thermal behavior of a single family house in Spain during a year. The model takes into consideration the characteristics of the building (orientation, insulation, thermal zones, etc.), heating and cooling devices, weather conditions and electric grid usage. Additionally, the model incorporates occupancy profiles, lighting, heat producing devices and infiltration to estimate thermal loads and photovoltaic production. So, with the utilization of the model, a characterization of the thermal and photovoltaic systems is accomplished, which can be used for the assessment of potential coupling with individual models of thermal energy storage solutions and comparison of cases with and without storage. As a result, the investigation of load shift strategies together with the exploitation of the photovoltaic energy source, will be feasible if the required input becomes available. According to the model, the annual thermal demands are 1618 kWh for space heating, 2358 kWh for space cooling and 1671 kWh for domestic hot water. The total electricity consumption of the heat pump and all circulating pumps is 1273 kWh, while the photovoltaic array produces 6512 kWh per year.

Keywords

TRNSYS, photovoltaic, building, thermal storage, thermal demand, space heating, heat pump

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