Suchergebnisse

In Europe the building sector represents 41% of the final energy consumption and the 40% of the total GHG emissions of end-use sectors (Directive 2010/31/EU) [1]. Solar energy is one of the forms of renewable energy that has great potential to enable EU the ambition of 12% of heating coming from renewable sources by 2020 [2]. Within this context, the overall objective of the project Innovative Micro Solar Heat and Power System (Innova MicroSolar) is to develop a high performance and cost effective solar heat and power system, which consist in a novel flat Fresnel mirror solar concentrating collector and micro organic Rankine cycle plant combined with advanced phase change materials as thermal storage, all system managed by smart control units. This technology will be initially implemented in individual dwellings and small business residential buildings for on-site electricity and heat generation using solar thermal energy. ; This study has received funding from European Union's Horizon 2020 research and innovation programme under grant agreement Nº723596 (Innova MicroSolar) and Nº 657466 (INPATHTES), from the European Commission Seventh Framework Programme (FP/2007-2013) under grant agreement Nº PIRSES-GA-2013-610692 (INNOSTORAGE). The work is partially funded by the Spanish government (ENE2015-64117-C5-1-R (MINECO/FEDER) and ENE2015- 64117-C5-3-R (MINECO/FEDER)). GREA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2014 SGR 123). Alvaro de Gracia would like to thank Ministerio de Economia y Competitividad de España for Grant Juan de la Cierva, FJCI-2014-19940.

Rapid expansion of solar thermal energy for increasing energy efficiency of buildings has been adopted in short/medium and long-term energy strategies of EU countries. This enhancement of energy efficiency in buildings is in line with regional actions with the European climate energy objectives as defined in the European Union's "20-20-20" targets and in the European Commission's Energy Roadmap 2050. Within this context, the overall objective of this work is to develop an innovative high performance and cost effective hybrid solar heat and power system, which consist in a novel flat Fresnel mirror solar concentrating collector and micro organic Rankine cycle plant combined with advanced phase change materials as thermal storage, all system managed by smart control units. The initial application is to be implemented in individual dwellings and small business residential buildings for on-site electricity and heat generation using solar thermal energy. It is estimated that the proposed technology will deliver 60% of domestic energy requirements and provide 20% reduction in energy costs and greenhouse gas emissions compared to the best existing low carbon energy technologies. To reach the main objectives, the first step consist in providing information on features of architecture of domestic and small business residential buildings and their annual energy demands for different countries such as: Spain, France Germany, Italy, and United Kingdom. This will include detailed building information of envelopes (walls, roof, lofts, etc.), structure, fabric, and results of energy demands (domestic hot water, space heating and electricity) for the abovementioned countries. This information will be used as input data during the development of this technology as it will point out the potential benefits of the system in different countries, climates, and building typologies. ; This study has received funding from European Union's Horizon 2020 research and innovation programme under grant agreement Nº723596 (Innova MicroSolar) and Nº 657466 (INPATH-TES), from the European Commission Seventh Framework Programme (FP/2007-2013) under grant agreement Nº PIRSES-GA-2013-610692 (INNOSTORAGE). The work is partially funded by the Spanish government ENE2015- 64117-C5-1-R (MINECO/FEDER), ENE2015-64117-C5-3-R (MINECO/FEDER) and (ULLE10-4E-1305). GREA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2014 SGR 123). Alvaro de Gracia would like to thank Ministerio de Economia y Competitividad de España for Grant Juan de la Cierva, FJCI-2014-19940.

Solar thermal energy has been adopted in medium and long‐term energy strategies within EU countries for increasing the energy efficiency of buildings. In this context, the overall objective of this project consists in developing an innovative high performance and cost effective hybrid system (solar heat and electrical power). The initial application is to be implemented in residential buildings for on‐site electricity and heat generation using solar thermal energy. The proposed technology is expected to deliver 60% of domestic energy requirements (heating and domestic hot water) and provide 20% reduction in energy costs and greenhouse gas emissions compared to the best existing low carbon energy technologies. A benchmark on the energy demand for the different types of residential buildings in Europe serves as reference scenario to evaluate the potential applicability of the different existing renewable technologies and to establish a comparative framework in terms of quantitative values. Thus, the specific aim of this study consists in performing a state‐of‐the‐art on the different building typologies, which can host this technology, and their energy demands for heating and domestic hot water, as well as their associated CO2 emissions. ; This study has received funding from European Union's Horizon 2020 research and innovation programme under grant agreement Nº723596 (Innova MicroSolar) and Nº 657466 (INPATH‐TES). The work is partially funded by the Spanish government ENE2015‐64117‐ C5‐1‐R (MINECO/FEDER) and ENE2015‐64117‐C5‐3‐R (MINECO/FEDER). GREA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2014 SGR 123). Alvaro de Gracia would like to thank Ministerio de Economía y Competitividad de España for Grant Juan de la Cierva, FJCI‐2014‐19940.

The building sector accounts for one third of the global energy consumption and it is expected to grow in the next decades. This evidence leads researchers, engineers and architects to develop innovative technologies based on renewable energies and to enhance the thermal performance of building envelopes. In this context, the potential applicability and further energy performance analysis of these technologies when implemented into different building typologies and climate conditions are not easily comparable. Although massive information is available in data sources, the lack of standardized methods for data gathering and the non-public availability makes the comparative analyses more diffcult. These facts limit the benchmarking of different building energy demand parameters such as space heating, cooling, air conditioning, domestic hot water, lighting and electric appliances. Therefore, the first objective of this study consists in providing a review about the common typologies of residential buildings in Europe from the main data sources. This study contains specific details on their architecture, building envelope, floor space and insulation properties. The second objective consists in performing a cross-country comparison in terms of energy demand for the applications with higher energy requirements in the residential building sector (heating and domestic hot water), as well as their related CO2 emissions. The approach of this comparative analysis is based on the residential building typology developed in TABULA/EPISCOPE projects. This comparative study provides a reference scenario in terms of energy demand and CO2 emissions for residential buildings and allows to evaluate the potential implementation of new supply energy technologies in hot, temperate and cold climate regions. From this study it was also concluded that there is a necessity of a free access database which could gather and classify reliable energy data in buildings. ; This study has received funding from European Union's Horizon 2020 research and innovation programme under grant agreement Nº723596 (Innova MicroSolar). The work is partially funded by the Spanish government (RTI2018-093849-B-C31). Julià Coma would like to thank Ministerio de Economía y Competitividad de España for Grant Juan de la Cierva, FJCI-2016-30345. José Miguel Maldonado would like to thank the Spanish Government for his research fellowship (BES-2016-076554). This work is partially supported by ICREA under the ICREA Academia programme.

Rapid expansion of solar thermal energy for increasing energy efficiency of buildings has been adopted in short/medium and long-term energy strategies of EU countries. Within this context, the overall objective of this work is to develop an innovative high performance and cost effective hybrid solar heat and power system. The initial application is to be implemented in individual dwellings and small business residential buildings for onsite electricity and heat generation using solar thermal energy. It is estimated that the proposed technology will deliver 60% of domestic energy requirements and provide 20% reduction in energy costs and greenhouse gas emissions compared to the best existing low carbon energy technologies. The aim of this study consists in performing a comparative analysis of the different building typologies, which can host this technology, and their energy demands for heating and domestic hot water, as well as their CO2 emissions. ; This study has received funding from Eurepean Union's Horizon 2020 research and innovation programme under grant agreement Nº 723596 (Innova MicroSolar) and Nº 657466 (INPATH-TES). The work is partially funded by the Sapnish government ENE2015-64117-C5-1-R (MINECO/FEDER) and ENE2015-64117-C5-3-R (MINECO/FEDER). GREA is certified agent TECNIO in the cathegory of technology developers from the Government of Catalonia. The authors would like to thanks the Calatan Governmnet for the quality accreditation given to their research group (2014 SGR 123). Alvaro de Gracia would like to thanks Ministerio de Economia y Competitividad de España for Grant Juan de la Cierva, FJCI-2014-19940.

In this paper, the smart management of buildings energy use by means of an innovative renewable micro-cogeneration system is investigated. The system consists of a concentrated linear Fresnel reflectors solar field coupled with a phase change material thermal energy storage tank and a 2 kWe/18 kWth organic Rankine cycle (ORC) system. The microsolar ORC was designed to supply both electricity and thermal energy demand to residential dwellings to reduce their primary energy use. In this analysis, the achievable energy and operational cost savings through the proposed plant with respect to traditional technologies (i.e., condensing boilers and electricity grid) were assessed by means of simulations. The influence of the climate and latitude of the installation was taken into account to assess the performance and the potential of such system across Europe and specifically in Spain, Italy, France, Germany, U.K., and Sweden. Results show that the proposed plant can satisfy about 80% of the overall energy demand of a 100 m2 dwelling in southern Europe, while the energy demand coverage drops to 34% in the worst scenario in northern Europe. The corresponding operational cost savings amount to 87% for a dwelling in the south and at 33% for one in the north. ; This research was funded by European Union's Horizon 2020 Research and Innovation Programme, grant number 723596. The APC was waived for this invited paper

Combined heat and power plants driven by renewable energy sources (RES) are becoming more and more popular, given the energy transition towards the integration of more renewable energy sources in the power generation mix. In this paper an innovative micro-solar 2kWe/18kWth Organic Rankine Cycle system, which is being developed by the consortium of several Universities and industrial organizations, with the funding from EU under the Innova MicroSolar project, is considered. In particular, its application to supply electricity and thermal energy for Domestic Hot Water (DHW) in a residential building is investigated by means of simulation analysis. Different Domestic Hot Water supply plant configurations are evaluated and the design parameters are varied in order to determine the best configuration to recover as much energy as possible from the ORC, while maintaining the final users' comfort. It was found out that with the considered plant around 67% of the Domestic Hot Water energy demand of 15 apartments can be satisfied with a water storage tank of 10'000 liters. However, in order to always guarantee the supply water temperature, a back-up boiler, which serves directly the final users when needed, is requested. ; This study is a part of the Innova MicroSolar Project, funded in the framework of the European Union's Horizon 2020 Research and Innovation Programme (grant agreement No 723596).

Ha generat l'article: Energies, 2020, 13(2), 429; https://doi.org/10.3390/en13020429 ; In this paper four different detailed models of pipelines have been proposed, they are supposed to be used in a quasi steady-state model of a micro solar Combined Heat and Power plant developed under the EU funded project Innova MicroSolar. The integrated plant consists of a Linear Fresnel Reflectors solar field, 3.8 tons of Latent Heat Thermal Energy Storage system equipped with reversible heat pipes and an Organic Rankine Cycle unit designed for a power production of 2 kWe/18 kWth. Previous numerical analyses carried out by some of the authors have revealed a high incidence of pipelines on the plant performance due to thermal losses and their dynamic behavior. Hence, in this paper four different levels of models detail of such pipelines have been developed and tested based on the micro CHP operating conditions in order to find out which approach provides the most accurate dynamic behavior in small scale CHP systems simulations. ; This study is a part of the Innova MicroSolar Project, funded in the framework of the European Union's Horizon 2020 Research and Innovation Programme (grant agreement No 723596)

Reducing the energy consumption in the building sector, as well as its associated CO2 emissions, is one of the main environmental concerns at worldwide level. In developed countries, the building sector means 41% of the total energy consumption and 40% of the total greenhouse gases emissions. To improve the energy efficiency of residential buildings, several energy strategies were carried out in European countries to encourage the development of active energy saving systems; such as the solar thermal energy. The presented study is in the frame of the Innova MicroSolar European project, which is sponsored by the European Union's Horizon 2020 research and innovation programme. The main goal of this project is to develop an innovative concentrated solar heat and power system for residential buildings, which supplies 2-kWelec and 18-kWth. This technology includes a concentrated solar system, a high performance micro organic Rankine cycle (ORC) turbine, and an enhanced latent heat thermal energy storage (LHTES). The solar system is based on linear Fresnel mirrors which are considerably easier and cheaper to manufacture than their parabolic equals. Also, the mirrors are led by a sun tracking mechanism so they are always focusing the absorber tubes, heating up to 295ºC the heat transfer fluid (HTF) flow. The total area of the real scale prototype solar field is 140 square metres, which could provide from 80 to 15 kWth. The micro ORC technology is equipped with a high speed permanent magnet AC alternator able to supply 2.3 kWel. The ORC block has to be fed with 22 kWth. Finally, the TES tank consists of two main blocks, the PCM tank and the enhanced heat sink. Both blocks are connected between them by reversible heat pipes as heat carrier. The storage is designed to supply 25 kWth during four working hours. The whole system will supply 60% of the total building energy demand, reducing the energy cost up to 20%, as well as the greenhouse gases emissions when comparing against the best renewable energy technologies available on the market. This study shows the first experiments of the whole systems. The HTF (Therminol 62) is heated up to 270ºC with the solar field, then the HTF is lead to the ORC evaporator and the organic fluid (cyclopenthane) evaporates and runs the turbine. The TES tank is charged when the solar field reaches maximum power levels. Once the solar production cannot run the ORC, the solar field is bypassed and the TES tank successfully becomes the main energy supplier. ; The research leading to these results has received funding from the European Union´s Horizon 2020 Research & Innovation Programme under Grant Agreement 723596 with reference name Innova MicroSolar. This work was partially funded by Spanish government (ENE2015-64117-C5-1-R (MINECO/FEDER)). José Miguel Maldonado would like to thank the Spanish Government for his research fellowship (BES-2016-076554). Alvaro de Gracia has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 712949 (TECNIOspring PLUS) and from the Agency for Business Competitiveness of the Government of Catalonia. The authors would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537). GREiA is a certified agent TECNIO in the category of technology developers from the Government of Catalonia.