scholarly journals Conservation compatible energy retrofit technologies: Part II: Documentation and assessment of conventional and innovative solutions for conservation and thermal enhancement of window systems in historic buildings

2021 ◽  
Author(s):  
Dagmar Exner ◽  
Jørgen Rose ◽  
Élodie Héberlé ◽  
Sara Mauri
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Energy Demand ◽  
Historic Buildings ◽  
Energy Retrofit ◽  
Window Systems ◽  
Thermal Enhancement ◽  
Innovative Solutions

The main objective of Subtask C is to identify, assess and in some cases further develop retrofit solutions and strategies for historic buildings. The solutions should fulfil the conservation compatibility of historic buildings as well as energy efficiency goals towards lowest possible energy demand and CO2 emissions (NZEB). Further, the objective is to make the solutions available for comprehensive integrated refurbishing concepts and strategies.

Influence of Shading and Transparent Surfaces on Historical Building Energy Retrofit

2015 ◽  
Vol 737 ◽  
pp. 173-177
Author(s):  
Luca Evangelisti ◽  
Claudia Guattari ◽  
Gabriele Battista ◽  
Luciano Santarpia
Keyword(s):  
Energy Efficiency ◽  
Thermal Properties ◽  
Energy Demand ◽  
Energy Requirement ◽  
Building Energy ◽  
Point Of View ◽  
Historical Building ◽  
Energy Retrofit

This study aims to assess the influence of greenery shading and transparent surfaces on historical building’s energy demand under a retrofit point of view. To achieve this goal, the energy requirement of the whole building has been considered. In order to improve buildings energy efficiency several simulations have been performed. In particular, the effects of some interventions related to different windowed elements, characterized by progressively improved thermal properties, have been taken into account.

scholarly journals Case Studies Assessment Report

2021 ◽  
Author(s):  
Daniel Herrera ◽  
Franziska Haas ◽  
Alexandra Troi ◽  
Gustaf Leijonhufvud ◽  
Tor Broström ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Knowledge Base ◽  
Case Studies ◽  
Energy Efficient ◽  
Building Energy ◽  
Historic Buildings ◽  
Historic Building ◽  
Assessment Report ◽  
Energy Retrofit

One of the main targets of SHC Task 59 is to provide a solid knowledge base on deep renovation of historic buildings. The Historic Building Energy Retrofit Atlas (HiBERatlas, www.hiberatlas.com) provides a bestpractice database of exemplary energy efficient  interventions in historic buildings. The database presents bestpractice examples of how a historic building can be renovated to achieve high levels of energy efficiency while respecting and protecting its heritage significance.

Wind energy and the historic environment: A business-driven symbiosis approach

2021 ◽  
pp. 0958305X2110148
Author(s):  
George A Xydis ◽  
Katerina Kremastioti ◽  
Maria Panagiotidou
Keyword(s):  
Energy Efficiency ◽  
Wind Energy ◽  
Heat Pump ◽  
Energy Demand ◽  
Energy Savings ◽  
Model Building ◽  
Electricity Consumption ◽  
Historic Buildings ◽  
Building Stock ◽  
Optimum Energy

The present study discusses alternative ways of achieving optimum energy efficiency for historic buildings in areas where sustainable energy projects are planned. About 25% of Europe’s building stock was constructed before the mid-20th century and despite EU’s strenuous efforts for the protection and conservation of historic buildings and complexes, achieving energy efficiency with the minimum or preferably no intervention remains as a requirement. The settlement of Monemvasia, has been selected as our case study. A model building was chosen, its special characteristics are presented, and four solutions to the energy efficiency upgrade of the building were tested: (a) the application of internal insulation, (b) a heat pump installation, (c) the application of roof insulation, and (d) the replacement of the internal doorframes. The four scenarios were simulated via the TEE-KENAK software and the percentage of the annual energy saved through the application of each one of the mentioned measures was estimated. The results proved that installing a heat pump and internal insulation would maximise energy savings. Coupling the energy demand of the settlement in correlation with a wind energy project in the wider area, and the available curtailment was explored. The results showed that if 300 houses decide on acquiring their electricity consumption from the local wind independent power producer, at a price of EUR 35/MWh, the possible profit from the market could reach EUR100,000 per year. Such a business-driven concept could be extrapolated and evolve into a holistic wind energy and historic environment symbiosis setting.

scholarly journals Affordable, Energy-Efficient Housing Design for Chile: Achieving Passivhaus Standard with the Chilean State Housing Subsidy

2020 ◽  
Vol 10 (21) ◽  
pp. 7390 ◽  
Author(s):  
Aner Martinez-Soto ◽  
Yarela Saldias-Lagos ◽  
Valentina Marincioni ◽  
Emily Nix
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Energy Efficient ◽  
Energy Demand ◽  
Economic Feasibility ◽  
Housing Subsidy ◽  
Passive House ◽  
Housing Design ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

In Chile, it is estimated that the energy demand will continue to increase if substantial energy efficiency measures in housing are not taken. These measures are generally associated with technical and mainly economic difficulties. This paper aims to show the technical and economic feasibility of achieving Passivhaus standard house in Chile, considering the budget of the maximum state subsidy currently available (Chilean Unidad de Fomento (CLF) 2000 ≈ 81,000 USD). The design was simulated in the Passive House Planning Package software to determine if the house could be certified with the selected standard. At the same time, the value of all the items was quantified in order not to exceed the stipulated maximum budget for a house considered as affordable. It was shown that in terms of design it is possible to implement the Passivhaus standard given the current housing subsidy. The designed housing ensures a reduction of 85% in heating demand and a 60% reduction in CO2 emissions during the operation, compared to an average typical Chilean house.

scholarly journals The Trends of the Energy Intensity and CO2 Emissions Related to Final Energy Consumption in Ecuador: Scenarios of National and Worldwide Strategies

2019 ◽  
Vol 12 (1) ◽  
pp. 20 ◽  
Author(s):  
Flavio R. Arroyo M. ◽  
Luis J. Miguel
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Energy Demand ◽  
Energy Intensity ◽  
Simulation Models ◽  
Energy Matrix ◽  
Final Energy ◽  
A Value ◽  
Final Energy Consumption ◽  
Final Energy Demand

Climate change and global warming are related to the demand for energy, energy efficiency, and CO2 emissions. In this research, in order to project the trends in final energy demand, energy intensity, and CO2 emission production in Ecuador during a period between 2000 and 2030, a model has been developed based on the dynamics of the systems supported by Vensim simulation models. The energy matrix of Ecuador has changed in recent years, giving more importance to hydropower. It is conclusive that, if industrialized country policies or trends on the use of renewable energy and energy efficiency were applied, the production of CO2 emissions by 2030 in Ecuador would reach 42,191.4 KTCO2, a value well below the 75,182.6 KTCO2 that would be seen if the current conditions are maintained. In the same way, by 2030, energy intensity would be reduced to 54% compared to the beginning of the simulation period.

scholarly journals Risk-Benefit Assessment Scheme for Renewable Solar Solutions in Traditional and Historic Buildings

2021 ◽  
Vol 13 (9) ◽  
pp. 5246
Author(s):  
Cristina S. Polo López ◽  
Elena Lucchi ◽  
Eleonora Leonardi ◽  
Antonello Durante ◽  
Anne Schmidt ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Outdoor Environment ◽  
Historic Buildings ◽  
Indoor Environmental Quality ◽  
Thermal Systems ◽  
Solar Systems ◽  
Energy Retrofit ◽  
Implementation Evaluation ◽  
Integration Of Renewables ◽  
The Impact

Within the framework of IEA-SHC Task 59, a multidisciplinary team of experts from around the world has come together to investigate current approaches for energy retrofit of the built heritage with energy efficiency conservation-compatible measures, in accordance with cultural and heritage values, and to check and adapt the new standard EN-16883:2017 for historic buildings. This paper introduces activities within IEA-SHC Task 59 (Subtask C) focused on retrofit solutions with high impact on sustainability, energy efficiency, and the integration of renewables, which is the main goal of the solar group, focused on the integrated solar systems for historic buildings. Relying on an extensive, detailed, and accurate collection of case studies of application of solar photovoltaic and thermal systems in historic buildings, the assessment criteria of the standard have been reviewed and tailored for better solar implementation evaluation in a heritage context. All this is studied based on technical compatibility, the heritage significance of the building and its settings, the economic viability, the energy performances and indoor environmental quality and use, as well as the impact on the outdoor environment of solar renewables.

scholarly journals Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan

2021 ◽  
Vol 13 (13) ◽  
pp. 7251
Author(s):  
Mushk Bughio ◽  
Muhammad Shoaib Khan ◽  
Waqas Ahmed Mahar ◽  
Thorsten Schuetze
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Electricity Consumption ◽  
Information Modeling ◽  
Base Case ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact ◽  
Cooling Energy Demand ◽  
Campus Building

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared with different alternative building envelope compositions applied as PEEMs in the renovation of the existing exemplary ACB. Finally, cooling energy demand reduction potentials and the related potential electricity demand savings were determined. The quantification of the cooling energy demand facilitates the definition of the building’s electricity consumption benchmarks for cooling with specific technologies.

scholarly journals Sustainability Investigation of Vehicles’ CO2 Emission in Hungary

2021 ◽  
Vol 13 (15) ◽  
pp. 8237
Author(s):  
István Árpád ◽  
Judit T. Kiss ◽  
Gábor Bellér ◽  
Dénes Kocsis
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Energy Supply ◽  
Internal Combustion Engines ◽  
Combustion Engines ◽  
The European Union ◽  
New Approach ◽  
Technology System ◽  
Low Co2

The regulation of vehicular CO2 emissions determines the permissible emissions of vehicles in units of g CO2/km. However, these values only partially provide adequate information because they characterize only the vehicle but not the emission of the associated energy supply technology system. The energy needed for the motion of vehicles is generated in several ways by the energy industry, depending on how the vehicles are driven. These methods of energy generation consist of different series of energy source conversions, where the last technological step is the vehicle itself, and the result is the motion. In addition, sustainability characterization of vehicles cannot be determined by the vehicle’s CO2 emissions alone because it is a more complex notion. The new approach investigates the entire energy technology system associated with the generation of motion, which of course includes the vehicle. The total CO2 emissions and the resulting energy efficiency have been determined. For this, it was necessary to systematize (collect) the energy supply technology lines of the vehicles. The emission results are not given in g CO2/km but in g CO2/J, which is defined in the paper. This new method is complementary to the European Union regulative one, but it allows more complex evaluations of sustainability. The calculations were performed based on Hungarian data. Finally, using the resulting energy efficiency values, the emission results were evaluated by constructing a sustainability matrix similar to the risk matrix. If only the vehicle is investigated, low CO2 emissions can be achieved with vehicles using internal combustion engines. However, taking into consideration present technologies, in terms of sustainability, the spread of electric-only vehicles using renewable energies can result in improvement in the future. This proposal was supported by the combined analysis of the energy-specific CO2 emissions and the energy efficiency of vehicles with different power-driven systems.

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