scholarly journals Numerical Simulation Modelling of Building-Integrated Photovoltaic Double-Skin Facades

2021 ◽  
Author(s):  
Siliang Yang ◽  
Francesco Fiorito ◽  
Deo Prasad ◽  
Alistair Sproul
Keyword(s):  
Numerical Simulation ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Layer Structure ◽  
Building Design ◽  
Simulation Modelling ◽  
Building Envelope ◽  
Design Tool ◽  
Building Integrated Photovoltaic ◽  
Double Skin

Building-integrated photovoltaic (BIPV) replaces building envelope materials and provides electric power generator, which has aroused great interest for those in the fields of energy conservation and building design. Double-skin façade (DSF) has attracted significant attention over the last three decades due to its bi-layer structure, which improves thermal and acoustic insulation and therefore increases the energy efficiency and thermal comfort of buildings. It is hypothesised that the integration of BIPV and DSF (BIPV-DSF) would help buildings in reducing energy consumption and improving indoor thermal comfort concurrently. However, the prototype of the BIPV-DSF has not been well explored. Thus, the investigations of the BIPV-DSF are worthwhile. Numerical simulation is a cost and time effective measure for the design and analysis of buildings. This chapter spells out a comprehensive method of numerical simulation modelling of the novel BIPV-DSF system in buildings, which is carried out by using a graphically based design tool – TRNSYS and its plugins. TRNSYS has been validated and widely used in both the BIPV and building related research activities, which are capable in analysing the effects of BIPV-DSF on building performance such as energy consumption and indoor thermal condition.

scholarly journals Determination of Optimum Envelope of Religious Buildings in Terms of Thermal Comfort and Energy Consumption: Mosque Cases

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6597
Author(s):  
Ahmet Bircan Atmaca ◽  
Gülay Zorer Gedik ◽  
Andreas Wagner
Keyword(s):  
Thermal Properties ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Thermal Insulation ◽  
Energy Savings ◽  
Gain Factor ◽  
Building Envelope ◽  
Comfort Level ◽  
Humid Climate ◽  
Savings Rate

Mosques are quite different from other building types in terms of occupant type and usage schedule. For this reason, they should be evaluated differently from other building types in terms of thermal comfort and energy consumption. It is difficult and probably not even necessary to create homogeneous thermal comfort in mosques’ entire usage area, which has large volumes and various areas for different activities. Nevertheless, energy consumption should be at a minimum level. In order to ensure that mosques are minimally affected by outdoor climatic changes, the improvement of the properties of the building envelope should have the highest priority. These optimal properties of the building envelope have to be in line with thermal comfort in mosques. The proposed method will be a guide for designers and occupants in the design process of new mosques or the use of existing mosques. The effect of the thermal properties of the building envelope on energy consumption was investigated to ensure optimum energy consumption together with an acceptable thermal comfort level. For this purpose, a parametric simulation study of the mosques was conducted by varying optical and thermal properties of the building envelope for a temperature humid climate zone. The simulation results were analyzed and evaluated according to current standards, and an appropriate envelope was determined. The results show that thermal insulation improvements in the roof dome of buildings with a large volume contributed more to energy savings than in walls and foundations. The use of double or triple glazing in transparent areas is an issue that should be considered together with the solar energy gain factor. Additionally, an increasing thickness of thermal insulation in the building envelope contributed positively to energy savings. However, the energy savings rate decreased after a certain thickness. The proposed building envelope achieved a 33% energy savings compared to the base scenario.

Building Envelope Design Optimization of a Hypothetical Classroom Considering Energy Consumption, Daylighting, and Thermal Comfort: Case Study in Lhokseumawe, Indonesia

2021 ◽  
Vol 12 (6) ◽  
pp. 1217
Author(s):  
Fahmi Nur Hakim ◽  
Yana Muhamadinah ◽  
Atthaillah Atthaillah ◽  
Rizki A. Mangkuto ◽  
Anugrah S. Sudarsono
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Design Optimization ◽  
Building Envelope

scholarly journals Developing thermal comfort model through regional budget expenditure analysis towards low energy consumption in public building facility (case object: government building in north and south of Jakarta)

2018 ◽  
Vol 74 ◽  
pp. 05001
Author(s):  
Bayu Andalas ◽  
Haryoto Kusnoputranto ◽  
Raldi H. Koestoer
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Field Study ◽  
Early Stage ◽  
Building Energy ◽  
Building Envelope ◽  
Monitoring Method ◽  
Budget Analysis ◽  
Regional Budget ◽  
Budget Expenditure

Building efficiency policy has implemented Indonesia. However, energy consumption in building sector remains significantly increased. Jakarta Government relied on AC in providing a comfortable condition for its service it consumed 57% of its total energy consumption. Current available energy monitoring method based on the expensive electrical device, so a new method using regional budget expenditure is developed in this research. This study established: Field study (6 buildings), regional budget expenditure analysis (313 buildings) on thermal comfort and building energy in 112 administrative office building equipped with Natural air ventilated (NV) and Air Conditioned (AC) and 224 building occupants/building manager were taking part in this research. Quantitative method used in this research with variables: thermal comfort (Air temperature, Relative humidity, radiant temperature, Air velocity, and personal clothing index) with Fanger’s Predicted Mean Vote (PMV) method calculation. Another variable used in this research is government standard for Building Energy Consumption Index (IKE) through regional government budget analysis. During an early stage, the budget analysis shows 6 out of 112 office buildings energy consumption (electricity) categorised as ‘extravagant.’ Field study higher IKE caused by too cold temperature setting, underperformed Air Conditioning System, building envelope and ventilation or ‘inappropriate’ building orientation (facing east-west).

scholarly journals Mathematical Modeling of Double-Skin Facade in Northern Area of China

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Zou Huifen ◽  
Fei Yingchao ◽  
Yang Fuhua ◽  
Tang Hao ◽  
Zhang Ying ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Influence Factors ◽  
Building Energy ◽  
Building Envelope ◽  
Circulation System ◽  
Building Energy Consumption ◽  
Strategy Analysis ◽  
Cold Area ◽  
Double Skin ◽  
Air Circulation

This paper focuses on the operation principles of the double-skin facade (DSF) in winter of severe cold area. The paper discussed the main influence factors of building energy consumption, including the heat storage cavity spacing, the air circulation mode, the building envelope, and the building orientation. First, we studied the relationship among the thermal storage cavity spacing, the temperature distribution in the cavity of the DSF, and the indoor temperature. Then, we discussed the influence on the ambient temperature in the building exerted by the air circulation system of the double-skin facade. Finally, we analyzed the influence on the whole building energy consumption of the DSF buildings under the situation of different building envelopes and different building orientations. Based on the results of the numerical simulation, the paper put forward an operation strategy analysis of the DSF buildings in severe cold area, in order to achieve the purpose of building energy saving.

scholarly journals Performance Study of a Multi-Objective Mathematical Programming Modeling Approach for Energy Optimization in Building Envelopes

2017 ◽  
Vol 14 (1) ◽  
Keyword(s):  
Thermal Comfort ◽  
Climatic Factors ◽  
Model Simulation ◽  
Energy Optimization ◽  
Building Design ◽  
Building Envelope ◽  
Performance Study ◽  
Building Envelopes ◽  
Design Elements ◽  
Shading Devices

Architecture is very responsive to the environmental and climatic factors which affect the built environment with unsteady state. Technology can be used to keep these factors under control by optimizing building design to fit with the surrounding environment and the energy needs. In addition, building envelopes play a major role in achieving thermal comfort for occupants and reducing energy consumption. Building envelopes energy optimization became a leading approach in the architectural research and implementation. This study hypothesizes that using solar shading devices with suitable design decisions of the fenestration affects the daylight level, solar heat gain, visual comfort, and thermal comfort for users. The main objective of this study is to examine the relationships between building envelope design and building energy efficiency through research and simulations. In addition, it explores which combinations of the design elements are the most efficient in terms of lighting and HVAC loads which gives the designers a variety of optimum design solutions to choose the architectural from. This research focuses on the implementation and effectiveness of shading devices, glass type, and window-wall ratio (WWR) in energy optimization through building envelope. The study used MATLAB software for the mathematical model simulation while Revit software was used for the model validation. The study found that south orientation for buildings associated with horizontal shading elements is the best solution in terms of cooling loads in summer. In winter, however, the optimal solution was south orientation with vertical shading elements in terms of heating loads and illuminance levels.

Numerical simulation study of BIPV/T double-skin facade for various climate zones in Australia: Effects on indoor thermal comfort

2018 ◽  
Vol 12 (1) ◽  
pp. 51-67 ◽  
Author(s):  
Siliang Yang ◽  
Alessandro Cannavale ◽  
Deo Prasad ◽  
Alistair Sproul ◽  
Francesco Fiorito
Keyword(s):  
Numerical Simulation ◽  
Thermal Comfort ◽  
Simulation Study ◽  
Climate Zones ◽  
Indoor Thermal Comfort ◽  
Double Skin

scholarly journals Effect of Water Spray in Controlling Temperature of Hot Gas Propagation through Double Skin Facade

2018 ◽  
Vol 67 ◽  
pp. 04038
Author(s):  
Wolter Purba ◽  
Afiri Dianti ◽  
Jefri Sigalingging ◽  
Nadhira Gilang Ratnasari ◽  
Yulianto Nugroho
Keyword(s):  
Heat Load ◽  
Fire Suppression ◽  
Rapid Development ◽  
Building Design ◽  
Building Envelope ◽  
Fire Event ◽  
Construction Design ◽  
Active Fire ◽  
Fire Scenarios ◽  
Double Skin

The rapid development of science and technology have contributed in the applied building design. One of them is the improvement of the construction design of the building envelope. Current high-rise building design impacts in wider building envelop surface area and greater heat load received from the sun irradiation. One of the common used design is the doubleskin façade type building envelope. The insulation characteristic given by the envelope interlayer gap can reduce the heat load received. However, in fire cases, the gap becomes hot gasses path, supporting wider flame propagation. Its position in the outside leads to harder fire suppression effort. During this time, the active fire protection system design has just considering fire scenarios inside the building. This research is conducted to see water droplets impact as extinguisher aspect on interlayer gap hot gasses propagation. The experiment used wooden layer with 540 mm x 80 mm x 6 mm dimention as the envelope layer. The interlayer gap varies among others 30 mm, 50 mm, and 70 mm to see flame output characteristic through and time needed for 4 nozzles to extinguish the flame. The suppression system applied is expected to be a solution in the case of double-skin façade building envelope fire event.

scholarly journals A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates

2019 ◽  
Vol 11 (13) ◽  
pp. 3582 ◽  
Author(s):  
Lotfabadi ◽  
Hançer
Keyword(s):  
Thermal Comfort ◽  
Vernacular Architecture ◽  
Building Design ◽  
Building Envelope ◽  
Point Of View ◽  
Thermal Calculation ◽  
Insulation Material ◽  
Energy Usage ◽  
Construction Techniques ◽  
Hot And Humid Climates

Expectations of traditional and contemporary buildings are different in terms of thermal comfort. Traditional buildings mostly achieve comfort through passive means, without HVAC support, but old levels of thermal satisfaction do not meet today’s expectations, although their passive thermal performances are notable for contemporary building designs. In this regard, the current study tries to investigate the possibility of comparing traditional and contemporary buildings’ construction techniques to achieve thermal comfort from an architectural point of view. In other words, is it possible to achieve passive building design by considering vernacular architecture principals as a reference? Likewise, how well can architects define insulation layers in contemporary construction surfaces in hot and humid climates? To this end, a dynamic, numerical, thermal calculation case study has been modeled in Famagusta, Northern Cyprus, to answer the above-mentioned questions. A mixed-use mode benefitting free-run periods is proposed and compared with a mode providing 24 hours of air-conditioning in different scenarios using the same initial settings. Thus, different floor-to-ceiling heights, insulation placements and indoor conditions have been tested separately in both winter and summer periods. The results show that thermal comfort can be achieved in free-run periods only during a limited percentage of the year. Furthermore, although increasing building heights may lead to a rise in the free-run periods, in contemporary buildings it increases the total energy usage of the buildings between 6% and 9% in the mixed mode. Therefore, vernacular architecture strategies are proper in their own context. However, this energy usage can still be controlled and optimized by such considerations as insulation material placement. In this regard, the best envelope properties for different building functions are proposed for application in hot and humid climates.

Low-cost retrofit packages for residential buildings in hot-humid Lagos, Nigeria

2019 ◽  
Vol 37 (3) ◽  
pp. 250-272 ◽  
Author(s):  
Nwakaego Chikaodinaka Onyenokporo ◽  
Ekele Thompson Ochedi
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Low Income ◽  
Residential Buildings ◽  
Relevant Literature ◽  
Building Envelope ◽  
Design Strategies ◽  
Content Type ◽  
Passive Design ◽  
Reducing Energy

Purpose The purpose of this paper is to develop a set of affordable retrofit packages that can be applied to existing residential buildings in hot-humid regions to improve occupants’ thermal comfort and reduce energy consumption. Design/methodology/approach A critical review of relevant literature to identify passive design strategies for improving thermal comfort and reducing energy consumption in hot-humid climates with focus on the building envelope was conducted in addition to a simulation study of an existing building typology in study area. Findings There is enormous potential to reduce energy costs and improve thermal comfort through building retrofit packages which is a recent concept in developing countries, such as Nigeria. Analysing the results of the retrofit interventions using building energy simulation helped in developing affordable retrofit packages which had optimum effect in improving indoor comfort temperature to the neutral temperature specified for hot humid Nigeria and further down to 3°C less than that of the reference building used. The use of passive design strategies to retrofit the building might help homeowners reduce their annual energy consumption by up to 46.3 per cent just by improving the indoor thermal comfort. Originality/value In addition to improving thermal comfort and reducing energy consumption, this research identified affordable retrofit packages and considered its cost implications especially to low-income earners who form a larger population of Lagos, Nigeria, as this was not considered by many previous researchers.

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