Energy assessment and optimization of perforated metal sheet double skin façades through Design Builder; A case study in Spain

2016 ◽  
Vol 111 ◽  
pp. 326-336 ◽  
Author(s):  
Jesús M. Blanco ◽  
Aiert Buruaga ◽  
Eduardo Rojí ◽  
Jesús Cuadrado ◽  
Belinda Pelaz
Keyword(s):  
Metal Sheet ◽  
Energy Assessment ◽  
Double Skin ◽  
Double Skin Facades

Double Skin Facades with Natural Ventilation Capability: A Case Study of Acoustical Enhancement via Passive and Active (Noise Cancelling) Methods

2016 ◽  
Vol 861 ◽  
pp. 537-544 ◽  
Author(s):  
Christian Tauber ◽  
Egzon Bajraktari ◽  
Josef Lechleitner ◽  
Ulrich Pont ◽  
Ardeshir Mahdavi
Keyword(s):  
Natural Ventilation ◽  
Low Cost ◽  
Noise Cancellation ◽  
Destructive Interference ◽  
Active Noise ◽  
Noise Cancelling ◽  
Double Skin ◽  
Double Skin Facades ◽  
Cost Components

Within an ongoing project, we explore the potential of double skin facades to provide both noise control and natural ventilation capability. Three strategies are investigated: i) Manipulation of sound paths via offset of the openings in the two shells of the façade; ii) Application of absorbing materials in the interstitial space of the façade; iii) Active noise cancelling methods utilizing wave-destructive interference. This contribution describes the overall project but focuses primarily on the active noise cancellation approach. Aside from a comprehensive background research on existing technology, we undertook the design of an actual setting for noise cancellation testing with suitable low-cost components as a proof-of-concept. Results of the experiments are expected to inform subsequent efforts to include noise-cancelling technology in double skin facades.

Characteristics of Glazing Layers of Double-Skin Facades and Energy Consumption: A Case Study in Arid Climate of Tehran

AEI 2019 ◽  
2019 ◽  
Author(s):  
Mohammadmehdi Danesh ◽  
Edelmiro Escamilla ◽  
Fatemeh Pariafsai ◽  
Mohammadreza Ostadalimakhmalbaf
Keyword(s):  
Energy Consumption ◽  
Arid Climate ◽  
Double Skin ◽  
Double Skin Facades

scholarly journals A Comprehensive Framework for Standardising System Boundary Definition in Life Cycle Energy Assessments

Buildings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 230
Author(s):  
Hossein Omrany ◽  
Veronica Soebarto ◽  
Jian Zuo ◽  
Ruidong Chang
Keyword(s):  
Life Cycle ◽  
Energy Use ◽  
Embodied Energy ◽  
Building Energy Efficiency ◽  
System Boundary ◽  
Policy Makers ◽  
Energy Assessment ◽  
Boundary Definition ◽  
Comprehensive Framework

This paper aims to propose a comprehensive framework for a clear description of system boundary conditions in life cycle energy assessment (LCEA) analysis in order to promote the incorporation of embodied energy impacts into building energy-efficiency regulations (BEERs). The proposed framework was developed based on an extensive review of 66 studies representing 243 case studies in over 15 countries. The framework consists of six distinctive dimensions, i.e., temporal, physical, methodological, hypothetical, spatial, and functional. These dimensions encapsulate 15 components collectively. The proposed framework possesses two key characteristics; first, its application facilitates defining the conditions of a system boundary within a transparent context. This consequently leads to increasing reliability of obtained LCEA results for decision-making purposes since any particular conditions (e.g., truncation or assumption) considered in establishing the boundaries of a system under study can be revealed. Second, the use of a framework can also provide a meaningful basis for cross comparing cases within a global context. This characteristic can further result in identifying best practices for the design of buildings with low life cycle energy use performance. Furthermore, this paper applies the proposed framework to analyse the LCEA performance of a case study in Adelaide, Australia. Thereafter, the framework is utilised to cross compare the achieved LCEA results with a case study retrieved from literature in order to demonstrate the framework’s capacity for cross comparison. The results indicate the capability of the framework for maintaining transparency in establishing a system boundary in an LCEA analysis, as well as a standardised basis for cross comparing cases. This study also offers recommendations for policy makers in the building sector to incorporate embodied energy into BEERs.

Predicting airflow in naturally ventilated double-skin facades: Theoretical analysis and modelling

2021 ◽  
Author(s):  
Yao Tao ◽  
Xiang Fang ◽  
Michael Yit Lin Chew ◽  
Lihai Zhang ◽  
Jiyuan Tu ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Double Skin ◽  
Double Skin Facades

The Role of Wind on Double Skin Facades in High Rise Office Building

2013 ◽  
Vol 787 ◽  
pp. 711-716
Author(s):  
Daryanto ◽  
Eko Budihardjo ◽  
Wahyu Setyabudi ◽  
Gagoek Hardiman
Keyword(s):  
Energy Conservation ◽  
Building Envelope ◽  
Office Buildings ◽  
Thermal Discomfort ◽  
High Rise ◽  
Double Skin ◽  
The Subject ◽  
Air Conditioning Systems ◽  
Double Skin Facades

There was an indication that high rise buildings in Jakarta was not designed based on energy conservation principles. The most important aspects of the high-rise buildings is energy saving technology located in the building envelope design. Building envelope with a full glass design functions for widening view and enhancing natural lights, even though but it is also increasing energy consumption and thermal discomfort due to the intensity of solar radiation in hot humid climates. During the current decade, the development of double building envelope type (Double Skin Façade: DSF) seemed more just to improve the aesthetics and the use of natural light, while the wind and thermal performance aspects were still lack of serious consideration. Those aspects will be chosen as the subject matter in this research. The research was aimed to investigate and compare the value of heat transfer in the building envelope of high-rise office buildings. Samples were taken from five DSF buildings, with closed and open cavity. CFD software is used for simulation of the five different models of DSF. The research proves that the high-rise office buildings as the research object in Jakarta do not apply energy conservation principle. The utilization of wind in the DSF cavity can reduce temperature and relieve the burden of air conditioning systems that is energy save. An important finding of the research is the need for ventilation in the design of a double skin at high-rise office buildings in the humid tropics.

scholarly journals Study on the Influence of Mounting Dimensions of PV Array on Module Temperature in Open-Joint Photovoltaic Ventilated Double-Skin Façades

2021 ◽  
Vol 13 (9) ◽  
pp. 5027
Author(s):  
Wenjie Zhang ◽  
Tongdan Gong ◽  
Shengbing Ma ◽  
Jianwei Zhou ◽  
Yingbo Zhao
Keyword(s):  
Heat Dissipation ◽  
Temperature Drop ◽  
Vertical Direction ◽  
Wind Pressure ◽  
Pv Array ◽  
Pv Module ◽  
Pv Modules ◽  
Double Skin ◽  
Open Joint ◽  
Double Skin Facades

In building integrated photovoltaics (PV), it is important to solve the heat dissipation problem of PV modules. In this paper, the computational fluid dynamics (CFD) method is used to simulate the flow field around the open-joint photovoltaic ventilated double-skin façades (OJ-PV-DSF) to study the influence of the mounting dimensions (MD) of a PV array on the module temperature. The typical summer afternoon meteorological parameters, such as the total radiation (715.4 W/m2), the outdoor temperature (33.1 °C), and the wind speed (2.0 m/s), etc., are taken as input parameters. With the DO (discrete ordinates) model and the RNG (renormalization-group) k − ε model, a steady state calculation is carried out to simulate the flow of air in and around the cavity under the coupling of hot pressure and wind pressure, thereby obtaining the temperature distribution of the PV array and the wall. In addition, the simulation results are compared with the onsite experimental data and thermal imaging to verify the accuracy of the CFD model. Then three MD of the open joints are discussed. The results show that when the a value (represents the distance between PV modules and wall) changes from 0.05 to 0.15, the temperature drop of the PV module is the most obvious, reaching 2.0 K. When the b value (representing the distance between two adjacent PV modules in the vertical direction) changes from 0 to 0.1, the temperature drop of the PV module is most obvious, reaching 1 K. When the c value (represents the distance between two adjacent PV modules in the horizontal direction) changes from 0 to 0.1, the temperature of the PV module is lowered by 0.8 K. Thus, a = 0.1–0.15, b = 0.1 and c = 0.1 are recommended for engineering applications to effectively reduce the module temperature.

Double-Skin Façades: Boundary Conditions, Challenging Examples and Developments

ce/papers ◽  
2018 ◽  
Vol 2 (5-6) ◽  
pp. 103-112
Author(s):  
Fabian Schmid ◽  
Xenia Cseh ◽  
Emil Rohrer ◽  
Martien Teich
Keyword(s):  
Boundary Conditions ◽  
Double Skin ◽  
Double Skin Facades
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