Double Glass Wall Ventilated Façade Office Building with Double Skin Glazed Curtain Wall

Double Glass Wall Ventilated Façade Office Building with Double Skin Glazed Curtain Wall

Quick Detail:
1. Surface Finished: PVDF Cotaed/Power Coating/Anodizing
2. Available Glass: Low-E/Reflective/Floated/Coated
3. Aluminium Thickness: 1.4-2.5mm

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Double-skin facade systems and its categories illustrates narrow fully sealed assemblies of systems which includes operable external louvers or shading devices. They all possess an inner and outer layer or glazed skin.

For a period of time now the use of DSF have increased due to their relevant usage and profit with respect to their possession of increased energy efficiency and daylighting improvement.

The paper will focus on the evaluation of Double-skin façade system for sustainable development in different climatic zones. An overview of the DSF literature illustrating the different types of double skin façade was carried, case studies of different DSF types was carried in different buildings in different locations namely; Eurotheum Frankfurt Germany, Seattle America and the Aurora Place, Sydney Australia.

Then analysis from the finding and discussions yield out the possible recommendations derived from the basic benefits and advantages of the DSF which includes; reduce heating demand, providing views, control solar gain, thermal, insulation, enhanced security, allowing natural ventilation, serves as pollution barrier, reduced artificial lightening m-Increased building life span, improve occupants comfort, future proofing, providing emergency egress, acoustic protection etc.

Then its disadvantages mainly is the initial cost of construction and space consumption. Therefore possible recommendation entailing the proper studying of different climatic zones in which the preferred DSF will be used was suggested so as to enhance further research and the technological advancement of the use of the DSF which was the concluding view point.

TWIN FACE DSF SYSTEM:

This consist of conventional curtain or thermal mass wall system inside a single glazed building skin. The outer glass may be safety or laminated glass or insulating glass. Shading devices may be included. This system must have an interior space of at least 500mm-600mm to permit cleansing.

It has an opening for allowing natural ventilation in the twin faced DSF which distinguishes it from the buffer and extract air DSF system. The outer skin is used for protecting air cavity contents (shading device), whereas the internal skin provides insulation for minimizing heat loss.

BUFFER DSF SYSTEM:

These predate insulating glass invented to maintain daylight into buildings while increasing sound and insulating properties of the wall system. They use two layers of single glazing spaced 250mm-900mm apart, sealed and allowing fresh air into the building through a controlled means of either a HVAC system or box type window which cut through the overall double skin with shading devices included in the cavity. The picture below shows an example of a buffer DSF system.

EXTRACT AIR DSF SYSTEM:

This comprised of a second layer of glazing placed on the interior of a main façade of double glazing (thermopane units) which makes the air space between the two layers of glazing to become part of the HVAC system.

The heated used air between the glazed layers extracted through the cavity with the use of fans, which tempers the inner layer of the glazing while the outer layer of insulating glass minimizes heat-transmission loss. Also fresh air is supplied by HVAC which precludes natural ventilation.

Shading devices are also mounted on the cavity with air spacing between the layers of glasses with the range of spacing between 150mm-900mm.This system is usually used in location where natural ventilation is not possible or places with high noise, wind, fumes etc. The picture below shows and example of an extract air DSF.

Double Skin Façade (DSF) system glass curtain wall is employed increasingly in high profile buildings, designed by famous Architects, using acclaimed engineering consultants, and being touted as an exemplary “green” building strategy. It is a new technology that is more often found in high-end European and Pacific Rim area buildings. For the majority of mainstream architects, double skin technology remains elusive. From perspectives of both knowledge and budget, double skin systems are often beyond the scope of most commercially driven projects.

The question arises as to whether or not double skin buildings truly are more environmentally responsible and sustainable. Is the commercial architecture missing out on potential energy and environmental savings? The Double Skin Façade is based on the notion of exterior walls that respond dynamically to varying ambient conditions, and that can incorporate a range of integrated sun-shading, natural ventilation, and thermal insulation devices or strategies.

Early modern architects in the window design of the different projects explored this new building technology. Early solar passive design exemplified in the "trombe" wall, is also viewed as a precursor to modern double skin systems Only recently has double skin technology become analogous with explorations in transparent and glass architecture, and moreover, acclaimed as environmentally "responsible" design. This paper represents the findings of a team of upper level B.Arch. and Masters students who have conducted an initial investigation into double skin cladding systems.

Specification:

Although the Double Skin Façade concept is not new, there is a growing tendency from the architects to put it into practice. Its complexity and adaptability to different climatic conditions increase the need for careful design. Since the construction types can differ from one location to another, it is obvious that the comparison of different literature sources is not always relevant. Since the concept of Double Skin Facades is complicated and its use and function affects different parameters of the building, the literature studied is from different fields.

It is clear that the design of the system is crucial for the performance of the building. It is the opinion of the author that the Double Skin Facades can provide both improved indoor climate and reduced use of energy in the same time if designed properly. If the approach is overall and the goals to be achieved are clear, then the mentioned system is flexible enough to meet climatic changes for most types of building use.

The classification of the Double Skin Facades is important since the initial approach can influence the design stage. After selecting the type of Double Façade appropriate for the building, it is necessary to define the design and the technical parameters (such as the materials used) that can influence the function and the performance of the system and the physical properties of the cavity. The accuracy of calculations of the façade performance in the design stage will lead to more precise predictions. It is clear that by prioritizing the main goals of the double façade system in different ways, the building design and construction can differ adapting to the performance requirements of the designers, and the needs of the users. The advantages and disadvantages of double skin façades found in different literature sources are mentioned and described.

Furthermore, examples of office buildings with Double Skin Façades are presented. Double Skin Façades 14 Finally a discussion and conclusions section follows in which the point of view of the author is given and comments are made. Fields of further research an development needed are presented.

As the co-founder of FAMOUS Engineering Company, Mr.Tomy GAO has been in the construction field for many years, and established series of companies with the target to create ecological chain in the building construction industry.

Nowadays, under FASECBuildings Group, there are several typical companies namely:

1. Hangzhou FAMOUS Steel Engineering Company

2. FASEC (Hangzhou) Window Wall Company

3. Hangzhou FASEC Building Material Company

Hangzhou USEU Metal Manufacturing Company and some more not listed here.

The key business scope of FASECbuildings Group include but not limited at:

1. Structural Steelworks & Steel Framing (Heavy/Light) construction

2. Glass Windows Doors, Curtain Wall Facade, Aluminum Panels Cladding, Partition Walls, Railing & Louvers, Screens Grills, BIPV etc

3. Building Roof Wall Flooring integrated material and other interiors new material R & D.

FASECbuildings Group always aim to offer cost saving prefab materials for USA-Europe & UK-Australia etc foreign standard market customers, with freely technical supports like engineering design when needed/detailing drawings/site construction guidance etc. We have multiple certification/experiences as well as the overall 2D/3D modelling capability for the building framing and the surroundings.

Brief Introduction of Subsidiaries:

1. Hangzhou FAMOUS Steel Engineering Co.,ltd. focus on the Design & Construction of various Steel Buildings and Structural Steelworks fabrication. The company have received a lot of foreign projects ranging from warehouse buildings, multi-storey apartments, high rise office & hotel buildings, space framing theaters, triangle truss buildings, to steel bridges, handling machinery framing, power plant towers, mining production line steelworks, cement production line steelworks, petro-chemical rackings etc. Basically the company have the full capability to operate various large-scaled projects complex except the simple building project.

2. FASEC (Hangzhou) Window Wall Company specializes in the offer of various aluminum & glass-related products design/manufacture/supply & installation. We have successfully supplied quite a lot of insulated & laminated glass panes, windows, glass doors, curtain walls, partition walls, railings, louvers, grills, metal claddings etc not only in China but also around the world. Australian standard, British Standard, Europe standard, and American standard etc aluminum & glass facade products are in our main research & development range.

3. Hangzhou FASEC Building Material Company play the role of the bridging and lubricating with different customers of new building material requirement for roof wall floor and interiors. Our building material team always are on the way to research and develop new style building material to save cost and time of building industrial customers. USEU Metal factory is its strong manufacturing backup force, and our own engineering team can offer various technical supports too.

FASECBuildings Group have passed by series of certifications like the quality management system (ISO 9001:2008), the Europe product quality control system EN1090, the structural fabrication system certificates of Europe ISO3834 and America AWS D1.1, the Australia AS2047 Glazed Windows Doors Qualifications etc.

Currently, FASECbuildings Group have spread its network across Xi’an, Shanghai, Nanjing, Guangzhou, Wuhan, Xiangfan, Liuzhou, Wuhu, Suzhou, Zhengzhou, and Yunnan, etc., as well as exporting business with America, Canada, Australia, New Zealand, United Kingdom, Germany, France, Bolivia, Chile, Argentina, Uruguary, Peru, Thailand, Philippine, Nigeria, Vietnam, South Africa, Ghana, Kenya, Zambia, UAE, Sudan, Iran, Irap, Angola, Poland, Mongolia, Russia and so on.

Through so many domestic & overseas project cases, FASECbuildings Group has successfully won reputations and experiences not only in China, but also in various foreign standards markets with examples of Europe Standards, America Standards, Australia Standards, British Standards, etc building related materials and building construction.

We keep improvement and innovation, with the slogan of “USA-EUROPE Standard Engineering and Quality Control Build Our Brand Reliability! One Trial Order Bring Constant Cooperation!”

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