scholarly journals Cool Marble Building Envelopes: The Effect of Aging on Energy Performance and Aesthetics

2016 ◽  
Vol 8 (8) ◽  
pp. 753 ◽  
Author(s):  
Federica Rosso ◽  
Anna Pisello ◽  
Weihua Jin ◽  
Masoud Ghandehari ◽  
Franco Cotana ◽  
...  
Keyword(s):  
Energy Performance ◽  
Building Envelopes

Recommended angle of a modular dynamic façade in hot-arid climate: daylighting and energy simulation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Seyedeh Samaneh Golzan ◽  
Mina Pouyanmehr ◽  
Hassan Sadeghi Naeini
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Energy Performance ◽  
Arid Climate ◽  
Visual Comfort ◽  
Building Envelopes ◽  
Content Type ◽  
Optimum Angle ◽  
Energy Efficient Buildings ◽  
Hot Arid Climate

PurposeThe modular dynamic façade (MDF) concept could be an approach in a comfort-centric design through proper integration with energy-efficient buildings. This study focuses on obtaining and/or calculating an efficient angle of the MDF, which would lead to the optimum performance in daylight availability and energy consumption in a single south-faced official space located in the hot-arid climate of Yazd, Iran.Design/methodology/approachThe methodology consists of three fundamental parts: (1) based on previous related studies, a diamond-based dynamic skin façade was applied to a south-faced office building in a hot-arid climate; (2) the daylighting and energy performance of the model were simulated annually; and (3) the data obtained from the simulation were compared to reach the optimum angle of the MDF.FindingsThe results showed that when the angle of the MDF openings was set at 30°, it could decrease energy consumption by 41.32% annually, while daylight simulation pointed that the space experienced the minimum possible glare at this angle. Therefore, the angle of 30° was established as the optimum angle, which could be the basis for future investment in responsive building envelopes.Originality/valueThis angular study simultaneously assesses the daylight availability, visual comfort and energy consumption on a MDF in a hot-arid climate.

scholarly journals On Innovative Cool-Colored Materials for Building Envelopes: Balancing the Architectural Appearance and the Thermal-Energy Performance in Historical Districts

2017 ◽  
Vol 9 (12) ◽  
pp. 2319 ◽  
Author(s):  
Federica Rosso ◽  
Anna Pisello ◽  
Veronica Castaldo ◽  
Marco Ferrero ◽  
Franco Cotana
Keyword(s):  
Thermal Energy ◽  
Energy Performance ◽  
Building Envelopes

Effective R-value of enclosed reflective space for different building applications

2019 ◽  
Vol 43 (5) ◽  
pp. 398-427 ◽  
Author(s):  
Hamed H Saber ◽  
Wahid Maref ◽  
Ali E Hajiah
Keyword(s):  
Heat Flow ◽  
Thermal Performance ◽  
Accurate Determination ◽  
Energy Performance ◽  
Climatic Conditions ◽  
Operating Conditions ◽  
Building Envelopes ◽  
Inclination Angles ◽  
R Value ◽  
Enclosed Space

Many parts of the building envelopes contain enclosed airspaces. Also, the insulating glass units in fenestration systems, such as curtain walls, windows, and skylight devices, contain enclosed spaces that are normally filled with air or heavy gas such as argon, xenon, or krypton. The thermal resistance (R-value) of an enclosed space depends mainly on the type of the filling gas, emissivity of all surfaces that bound the space, the size and orientation of the space, the direction of heat flow through the space, and the respective temperatures of all surfaces that define the space. Assessing the energy performance of building envelopes and fenestration systems, subjected to different climatic conditions, requires accurate determination of the R-values of the enclosed spaces. In this study, a comprehensive review is conducted on the thermal performance of enclosed airspaces for different building applications. This review includes the computational and experimental methods for determining the effective R-value of enclosed reflective airspaces. Also, the different parameters that affect the thermal performance of enclosed airspaces are discussed. These parameters include the following: (a) dimensions, (b) inclination angles, (c) directions of heat flow, (d) emissivity of all surfaces that bound the space, and (e) operating conditions. Moreover, numerical simulations are conducted using a previously developed and validated model to investigate the effect of the inclination angle, direction of heat transfer, and the coating emissivity on the R-values of enclosed spaces when they are filled with different types of gases.

scholarly journals Selecting Insulating Materials for Building Envelope: A Life Cycle Approach

2021 ◽  
Vol 65 (2-4) ◽  
pp. 312-316
Author(s):  
Surnam Sonia Longo ◽  
Maurizio Cellura ◽  
Maria Anna Cusenza ◽  
Francesco Guarino ◽  
Ilaria Marotta
Keyword(s):  
Life Cycle ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Cellulose Fibers ◽  
Energy Performance ◽  
Embodied Energy ◽  
Life Cycle Approach ◽  
Insulation Material ◽  
Gas Emissions ◽  
Building Envelopes

This paper aims at assessing the embodied energy and greenhouse gas emissions (GHGs) of two building envelopes, designed for a two floors semi-detached house located in the Central Italy. The analysis is performed by applying the Life Cycle Assessment methodology, following a from cradle-to-gate approach. Fixtures (windows and doors), external and internal opaque walls, roof and floors (including interstorey floors) make the building envelopes. Their stratigraphy allows for achieving the thermal transmittance values established in the Italian Decree on energy performance of buildings. The two examined envelopes differ only for the insulation material: extruded expanded polystyrene (XPS) or cellulose fibers. The results shows that the envelope using cellulose fibers has better performance than that using XPS: it allows for reducing the embodied energy and the GHGs of about 13% and 9.3%, respectively. A dominance analysis allows to identify the envelope components responsible of the higher impacts and the contribution of the insulating material to the impacts. The study is part of the Italian research “Analysis of the energy impacts and greenhouse gas emissions of technologies and components for the energy efficiency of buildings from a life cycle perspective” funded by the Three-year Research Plan within the National Electricity System 2019-2021.

Numerical assessing energy performance for building envelopes with phase change material

2018 ◽  
Vol 43 (12) ◽  
pp. 6222-6232 ◽  
Author(s):  
Ru Ji ◽  
Zehui Zou ◽  
Meihan Chen ◽  
Yaxian Zheng ◽  
Shilin Qu
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Energy Performance ◽  
Building Envelopes ◽  
Change Material

scholarly journals Evaluation of School Building Energy Performance and Classroom Indoor Environment

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2489 ◽  
Author(s):  
Jitka Mohelníková ◽  
Miloslav Novotný ◽  
Pavla Mocová
Keyword(s):  
Energy Consumption ◽  
Energy Performance ◽  
Climatic Conditions ◽  
School Buildings ◽  
School Building ◽  
Indoor Climate ◽  
Building Stock ◽  
Building Envelopes ◽  
Existing Building ◽  
School Renovation

Existing building stock represents potential for energy saving renovations. Energy savings and indoor climate comfort are key demands for sustainable building refurbishment. Especially in schools, indoor comfort is an extremely important issue. A case study of energy consumption in selected school buildings in temperate climatic conditions of Central Europe region was performed. The studied buildings are representatives of various school premises constructed throughout the last century. The evaluation was based on data analysis of energy audits. The goal was aimed at assessment of the school building envelopes and their influence on energy consumption. One of the studied schools was selected for detailed evaluation. The school classroom was monitored for indoor thermal and visual environments. The monitoring was performed to compare the current state and renovation scenarios. Results of the evaluation show that the school buildings are highly inefficient even if renovated. Indoor climate in classrooms is largely influenced by windows. Solar gains affect interior thermal stability and daylighting. Thermal insulation quality of building envelopes and efficient solar shading systems appear to be fundamental tasks of school renovation strategies.

scholarly journals Energy Performance Analysis of Building Envelopes

2021 ◽  
Vol 11 (3) ◽  
pp. 196-206
Author(s):  
Ibrahim Motawa ◽  
Asser Elsheikh ◽  
Esraa Diab
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Life Cycle Cost ◽  
Energy Performance ◽  
Building Envelopes ◽  
Heating And Cooling ◽  
Main Challenge ◽  
Sustainable Materials ◽  
High Level ◽  
Total Life

Abstract The building sector has a high level of energy consumption caused mainly by the buildings heating and cooling energy demands to satisfy indoor comfort requirements. Reducing both the amount of energy consumed and the life cycle cost is a main challenge for the construction of buildings. It is evident that sustainable materials have low environmental impacts and need low consumption of energetic resources in addition to their durability and recyclability. Therefore, this research aims to test different sustainable materials available in Egypt for the construction of building envelopes that include local stones “Marble and Limestone” and insulation materials “Polyurethane- expanded and Extruded polystyrene (XPS) foam” in order to achieve savings in energy and total life cycle cost. The simulation tests were conducted through Design Builder software. The results aim to provide solutions for building designers to achieve energy-efficiency and costeffective design. The proposed alternatives showed a significant reduction in energy consumption by up to 62% and the total life cycle costs significantly reduced by up to 45.8%.

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