Environmental and energy impact of the EPBD in residential buildings in hot and temperate Mediterranean zones: The case of Spain

Ochoa, Luis María López; Las-Heras-Casas, Jesús; González, Luis Español; Olasolo-Alonso, Pablo

doi:10.1016/j.energy.2018.07.104

Cited by 32 publications

(26 citation statements)

References 31 publications

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“…The summer climate severity is obtained from the summer degree-days with a base temperature of 20 • C in summer, using the corresponding values for the months from June to September. As this study focuses on hot and temperate Mediterranean climate zones, the studied buildings are located in the most representative Spanish cities in climate zones A3, A4, B3, B4, C1, C2, C3, and C4 [33,35]. The cities selected for the study include 22 provincial capitals and two autonomous cities.…”

Section: Climate Zonesmentioning

confidence: 99%

Energy Renovation of Residential Buildings in Hot and Temperate Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

et al. 2021

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One of the greatest challenges facing the European Union is the conversion of the existing residential building stock into nearly zero-energy buildings (NZEBs) by 2050 through energy renovation, given that the residential sector is one of the largest consumers of final energy and that approximately two-thirds of existing dwellings were built before 1980. The objective of this study is to assess the energy, environmental, and economic impacts of the energy renovation of thermal envelopes of existing multi-family buildings in the hot and temperate climate zones of Spain by using life cycle cost analysis (LCCA) to determine the optimal thicknesses of insulation to be added to the walls, roof, and first floor framework of the buildings and replacing existing building openings to achieve NZEBs. Four thermal insulation materials are considered with four different heating and cooling systems and ten different models. With the methodology developed, the best energy renovation solutions are estimated and then thermally simulated. In total, 67 of the 576 proposed energy renovation solutions achieve NZEBs. This study fills in the gap between LCCA estimates and reality.

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Section: Climate Zonesmentioning

confidence: 99%

Energy Renovation of Residential Buildings in Hot and Temperate Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

et al. 2021

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“…The studied building [7,28,29] has a ground floor and 5 levels. The base is square with an area of 484.00 m 2 , and the height of each floor is 3.00 m. The main façade has a northerly orientation.…”

Section: Main Characteristics Of the Studied Buildingmentioning

confidence: 99%

“…Equations (18)- (29) and Equations (33)-(37) were obtained and adapted from [16,17], and Equations (43)-(49) were used in [28,29].…”

Section: Ecs Renomentioning

confidence: 99%

“…The optimization of the insulation thickness is performed to minimize both the total heating costs and the total heating and cooling costs using thermal insulation materials including expanded polystyrene (EPS), wool mineral (MW), polyurethane (PUR) and extruded polystyrene (XPS) for different heating and cooling systems with heating oil boilers, natural gas boilers, biomass boilers and electric heat pumps. The residential building studied is the multi-family housing block that was used in [7,28,29] to assess the energy and environmental impacts of the EPBD in Spain. The existing thermal envelope of the building has the main features of the thermal envelopes of the existing residential stock in the studied areas [30].…”

Section: Introductionmentioning

confidence: 99%

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Energy Renovation of Residential Buildings in Cold Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

et al. 2020

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The residential sector of the European Union consumes 27% of the final energy of the European Union, and approximately two-thirds of the existing dwellings in the European Union were built before 1980. For this reason, the European Union aims to transform the existing residential building stock into nearly zero-energy buildings by 2050 through energy renovation. The most effective method to achieve this goal is to increase the thermal insulation of opaque elements of the thermal envelope. This study aims to assess the energy, environmental and economic impacts of the energy renovation of the thermal envelopes that are typical of the existing multi-family buildings of the 26 provincial capitals in the cold climate zones of Spain. To achieve this goal, the insulation thickness to be added to the walls, roof and first floor framework is optimized by a life cycle cost analysis, and the existing building openings are replaced, thus minimizing both the total heating costs and the total heating and cooling costs. The study uses four thermal insulation materials for four different heating and cooling systems in 10 different models. The results obtained will be used to propose energy renovation solutions to achieve nearly zero-energy buildings both in Spain and in similar Mediterranean climate zones.

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“…2 Design of buildings with low-energy consumption has been, during the last two decades, a matter of research and study. 3,4 There are approaches oriented to reduce the building's energy demand, through the design of buildings with very low-energy requirements, 5 and also through the implementation of efficient energy supply systems considering as well the integration of renewable energy technologies. 6,7 The integration of thermal and electrical systems makes feasible to increase the share of renewable energy and also achieving CO 2 emissions reduction.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the design of polygeneration systems for the residential sector under different self‐consumption regulations

2020

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Polygeneration systems enable natural resources to be exploited efficiently, decreasing CO 2 emissions and achieving economic savings relative to the conventional separate production. However, their economic feasibility depends on the legal framework. Preliminary design of polygeneration systems for the residential sector based on the last Spanish self-consumption regulations RD 900/2015 and RD 244/2019 was carried out in Zaragoza, Spain. Both regulations were applied to individual and collective installations. Several technologies, appropriate for the energy supply to residential buildings, for example, photovoltaics, wind turbines, solar thermal collectors, microcogeneration engines, heat pump, gas boiler, absorption chiller, and thermal and electric energy storage were considered candidate technologies for the polygeneration system. A mixed integer linear programming model was developed to minimize the total annual cost of polygeneration systems. Scenarios with and without electricity sale were considered. CO 2 emissions were also calculated to estimate the environmental impact. Results show that RD 900/2015 discourages the investment in self-consumption systems whereas the RD 244/2019 encourages them, especially in renewable energy technologies. Moreover, in economic terms, it is more profitable to invest in collective self-consumption installations over individual installations. However, this does not necessarily represent a significant reduction of CO 2 emissions with respect to individual installations since the natural gas consumption tends to increase as its unit price decreases because of the increase of its consumption level. Thus, more appropriate pricing of natural gas in residential sector, in which its cost would not be reduced when increasing its consumption, would be required to achieve significant CO 2 emissions reduction. In all cases, the photovoltaic panels (PV) are competitive and profitable without subsidies in self-consumption schemes and the reversible heat pump (HP) played an important role for the CO 2 emissions reduction. In a horizon to achieve zero CO 2 emissions, the net metering scheme could be an interesting and profitable alternative to be considered.

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Environmental and energy impact of the EPBD in residential buildings in hot and temperate Mediterranean zones: The case of Spain

Cited by 32 publications

References 31 publications

Energy Renovation of Residential Buildings in Hot and Temperate Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

Energy Renovation of Residential Buildings in Hot and Temperate Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

Energy Renovation of Residential Buildings in Cold Mediterranean Zones Using Optimized Thermal Envelope Insulation Thicknesses: The Case of Spain

Optimization of the design of polygeneration systems for the residential sector under different self‐consumption regulations

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