OVERALL TRANSFER THERMAL VALUE (OTTV) INDEX ASSESSMENT ON 4G11 TOWER, MINISTRY OF WOMEN FAMILY AND COMMUNITY DEVELOPMENT, PUTRAJAYA, MALAYSIA

2019 ◽  
Vol 1 (1) ◽  
pp. 106
Author(s):  
Amirul Amin Ismail ◽  
Azman Zainonabidin
Keyword(s):  
Building Envelope ◽  
Office Building ◽  
City Development ◽  
Sustainable City ◽  
Baseline Design ◽  
High Rise ◽  
Building Typology ◽  
U Value ◽  
Measuring Tool

In the Eleventh Malaysia Plan, Malaysia will be pioneering a sustainable city development by retrofitting all Government buildings to be energy efficient. Overall Thermal Transfer Value (OTTV) is a measuring tool of thermal efficiency for building envelope. A case study on iconic 4G11 Tower is carried out to determine the possibility of improving OTTV assessment for existing high-rise office building thus enhance the building’s overall efficiency. Through this exercise, several variables influence the OTTV score such as U-Value, Shading Coefficient (SC) and Window-to-Wall Ratio (WWR). Characterised by Baseline Design, MS1525 Design and Platinum Design, this will be a precedent of OTTV assessment for high-rise office building typology. 

scholarly journals Energy Efficient Glazed Office Building Envelope Solutions for Different European Climates

2017 ◽  
Vol 9 (4) ◽  
pp. 470-481
Author(s):  
Marco Scanferla ◽  
Violeta Motuzienė
Keyword(s):  
Primary Energy ◽  
Building Envelope ◽  
Point Of View ◽  
Office Building ◽  
Renewable Energy Systems ◽  
High Rise ◽  
U Value ◽  
Optimal Values ◽  
Influential Parameters ◽  
Critical Aspects

The aim of this study is to show the critical aspects of a completely glazed high rise office building from an energy efficiency point of view in different European climates. The achievable consumptions and the most influential parameters such as glazing U-value, VT/SHGC and shading and their optimal values were investigated. The study has been carried out for a theoretical office building in Italy and Lithuania, representatively of a southern and northern EU climate. The building chosen is representative of all the glazed-simple shape buildings and the analysis of the entirety of the building enables a clear and im-mediate outcome of global consumptions. Number of DesignBuilder simulations were performed and the annual consumptions are summed with the primary energy criteria. Results show the critical aspects of 100% WWR buildings: in the coldest climate the main problem is the huge surface of relatively high glass U-value compared with standard walls, while in the warmer one the main efforts need to be done to avoid the summer overheating caused by incoming solar radiation. Finally, it is shown that it is difficult to lower the overall primary energy consumptions below 130 and 140 kWh/m2a for North-Italy and Lithuania locations respectively. The analysis is focused only in the envelope parameter, thus it is not included renewable energy systems, which can generate higher energy efficiencies.

scholarly journals ESTIMATING ENERGY SAVING POTENTIAL BY TAKING INTO ACCOUNT INTERDEPENDENCE EFFECT CASE STUDY: HIGH RISE OFFICE BUILDING IN JAKARTA

2021 ◽  
Vol 2 (1) ◽  
pp. 26-32
Author(s):  
Endang Widayati
Keyword(s):  
Energy Saving ◽  
Energy Performance ◽  
Office Building ◽  
Cooling Load ◽  
Energy Saving Potential ◽  
High Rise

Abstrak: Tujuan studi ini adalah membandingkan perhitungan potensi penghematan energi tanpa memperhitungkan efek interdepensi dengan perhitungan potensi penghematan energi dengan memperhitungkan efek interdependensi berdasarkan studi kasus pada bangunan gedung terkondisikan. Estimasi potensi penghematan energi yang akurat akan menghasilkan proyek konservasi dan efisiensi energi yang bankable akan meningkatkan kepercayaan terhadap investasi proyek – proyek penghematan energi. Hal ini  akan meminimalkan ketidakpastian penghematan energi yang dapat dicapai serta meningkatkan potensi untuk mencegah risiko investasi dari  implementasi proyek – proyek konservasi dan efisiensi energi. Hasil dari studi ini menunjukkan bahwa terjadi kenaikan estimasi penghematan energi sebesar 4,29% pada ESM-1 yaitu retrofit tata cahaya dan kenaikan estimasi penghematan energi sebesar 22,75% pada ESM-2 yaitu pemasangan VSD pada AHU. Pengaruh interdependensi tersebut adalah adanya pengurangan cooling load pada bangunan gedung karena efek interdependensi pada ESM-1 dan ESM -2.  Secara total perhitungan efek interdependensi akan meningkatkan prosentase total estimasi potensi penghematan energi dari 34.23% menjadi 39,05% berdasarkan baseline energi dengan baseyear yang telah ditetapkan atau meningkat sebesar 4,82%. Perhitungan efek interdependensi akan sangat berpengaruh untuk meminimalisasi ketidakpastian apabila proyek proyek konservasi dan efisiensi energi dibiayai dengan energy performance contract dengan skema guaranteed saving maupung shared saving. Perlu tindak lanjut dari studi ini yaitu perhitungan dan verfifikasi penghematan energi hasil implementasi ESM-1, ESM-2 dan ESM-3 pada tahun berjalan.  

scholarly journals Energy Efficient Improvements of Existing Buildings through Building Envelope Upgrade Case Study of High Rise Block of Flats on 76, Boulevard Partizanski Odredi in Karpos IV, Skopje

2016 ◽  
Vol 2016 ◽  
pp. 1-180
Author(s):  
Katerina Petrushevska
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Performance ◽  
Building Envelope ◽  
Living Room ◽  
Building Stock ◽  
Existing Building ◽  
High Rise ◽  
Class B

AIM: This research examines the important issue of energy efficient improvements to the existing building stock through building envelope upgrade. To facilitate this, the energy performance characteristics of the existing building stock were identified with a view to establishing an existing building stock type, where building envelope upgrades can contribute to a higher level of energy efficiency improvements. The literature review along with the selected building precedents was used to establish the best current practice for building envelope upgrades.MATERIAL AND METHODS: Established building precedents and identified best practice for building envelope upgrade, a high rise block of flats was identified and used as a case study, with the current and predicted, following building envelope upgrade, energy performance of the building calculated. This has allowed us to identify the possible energy efficiency improvements for this type of building following the building envelope upgrade. RESULTS: In the projected case, the building with energy class - "D" become class "B". In addition, increased quality of the living room in the attic was enabled. It was possible to obtain a decrease of the heating energy from 130.76 kWh/m²a to 37.73 kWh/m²a or to jump in the class "B" of energetic passport.CONCLUSION: This research contributes to the local implementation of the global agenda for sustainable development, design and construction, and it demonstrates the possible way and level of energy efficiency improvements to the least efficient building stock through existing building envelope upgrade.

scholarly journals A Systemic Approach to City Image Building. The Case of Katowice City

2019 ◽  
Vol 11 (16) ◽  
pp. 4470 ◽  
Author(s):  
Anna Adamus-Matuszyńska ◽  
Jerzy Michnik ◽  
Grzegorz Polok
Keyword(s):  
Real Life ◽  
City Image ◽  
City Development ◽  
Sustainable City ◽  
Causal Mapping ◽  
Novel Approach ◽  
Image Building ◽  
The City

Making long-term decisions and developing successful policy is always a challenge for a governing body. Within the framework of causal mapping, we evolved a model for the problem of creating and reinforcing a city’s image. Then, the model was enhanced into a quantitative form and processed with a novel approach: the extended form of the Weighted Influence Non-linear Gauge System (WINGS). A real-life case study of the city of Katowice showed that the presented approach can be helpful for city authorities. It reinforces the understanding of the problem, facilitates choosing policy options, and supports sustainable city development.

scholarly journals Towards a Smart and Sustainable City with the Involvement of Public Participation—The Case of Wroclaw

2019 ◽  
Vol 11 (2) ◽  
pp. 332 ◽  
Author(s):  
Dorota Bednarska-Olejniczak ◽  
Jarosław Olejniczak ◽  
Libuše Svobodová
Keyword(s):  
Sustainable Development ◽  
Public Participation ◽  
Smart City ◽  
Full Range ◽  
Point Of View ◽  
City Development ◽  
Sustainable City ◽  
Case Study Analysis ◽  
Unexplored Area

The purpose of this article is to identify the directions and scope of inclusion of the residents’ participation into the concept of city’s sustainable development and the smart city concept, taking into account national and international conditions, on the basis of Wroclaw’s practices in 1998–2018. Many researchers have emphasized the necessity of including residents’ participation in both the smart city concept and the sustainable city development concept, but they do not focus on a coherent linking of these activities during evolution toward a sustainable smart city (SSC). The in-depth case study analysis considered, i.e., three subsequent Wroclaw development strategies (1998–2018) and implementation of the smart city concept in Wroclaw (2015–2018) with particular emphasis on the issue of public participation and sustainable development of the city. The results of study show that in the case of the developments in the activities of smart city and sustainable city development carried out by Wroclaw, it is possible to identify two different approaches to residents’ participation in city activities. In Wroclaw, ‘residents’ participation’ in the framework of the sustainable city development activities currently covers all theoretical levels of participation, while within the smart city activities it focuses mainly on the participatory budget and the limited use of ICT. The conducted research indicates that for the implementation of the SSC concept it would be important to integrate these approaches in order to ensure the full range of residents’ participation in accordance with theoretical postulates. The conducted analysis therefore covers mostly unexplored area of research, which is important from the point of view of a city’s evolution toward becoming a sustainable smart city. The conclusions from the research are also an empirical contribution to the analysis of the changes of cities towards SSC and indicate the need for further, extended research on the undertaken problem.

Sign in / Sign up

Export Citation Format

Share Document