A rapid evaluation method for design strategies of high-rise office buildings achieving nearly zero energy in Guangzhou

2021 ◽  
Vol 44 ◽  
pp. 103297
Author(s):  
Sisi Chen ◽  
Lihua Zhao ◽  
Lintao Zheng ◽  
Guanghong Bi
2021 ◽  
Vol 13 (9) ◽  
pp. 5201
Author(s):  
Kittisak Lohwanitchai ◽  
Daranee Jareemit

The concept of a zero energy building is a significant sustainable strategy to reduce greenhouse gas emissions. The challenges of zero energy building (ZEB) achievement in Thailand are that the design approach to reach ZEB in office buildings is unclear and inconsistent. In addition, its implementation requires a relatively high investment cost. This study proposes a guideline for cost-optimal design to achieve the ZEB for three representative six-story office buildings in hot and humid Thailand. The energy simulations of envelope designs incorporating high-efficiency systems are carried out using eQuest and daylighting simulation using DIALux evo. The final energy consumptions meet the national ZEB target but are higher than the rooftop PV generation. To reduce such an energy gap, the ratios of building height to width are proposed. The cost-benefit of investment in ZEB projects provides IRRs ranging from 10.73 to 13.85%, with payback periods of 7.2 to 8.5 years. The energy savings from the proposed designs account for 79.2 to 81.6% of the on-site energy use. The investment of high-performance glazed-windows in the small office buildings is unprofitable (NPVs = −14.77–−46.01). These research results could help architects and engineers identify the influential parameters and significant considerations for the ZEB design. Strategies and technical support to improve energy performance in large and mid-rise buildings towards ZEB goals associated with the high investment cost need future investigations.


2021 ◽  
Vol 675 (1) ◽  
pp. 012079
Author(s):  
Weidong Wu ◽  
Qi Meng ◽  
Yajun Lv ◽  
Xinyang Li ◽  
Huanyu Hou ◽  
...  

2009 ◽  
Vol 15 (10) ◽  
pp. 3624-3632 ◽  
Author(s):  
Yuji Mishima ◽  
Natsuhiko Sugimura ◽  
Yuko Matsumoto-Mishima ◽  
Yasuhito Terui ◽  
Kengo Takeuchi ◽  
...  

2013 ◽  
Vol 787 ◽  
pp. 711-716
Author(s):  
Daryanto ◽  
Eko Budihardjo ◽  
Wahyu Setyabudi ◽  
Gagoek Hardiman

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.


2021 ◽  
Vol 13 (11) ◽  
pp. 6259
Author(s):  
Jizhong Shao ◽  
Minge Yang ◽  
Guan Liu ◽  
Ye Li ◽  
Dan Luo ◽  
...  

As current society’s reflection on the rapid development of motorization and increasing emphasis on the ecological environment, the study of walkable cities has become one of the key points of urban sustainable design. Creating a walkable city is an effective way to build a low-carbon and healthy city. With the development of cities, walkability concepts and theories are constantly being given new life, and research methods and design strategies continue to be updated. A city’s walkability and walkability index have become current research hotspots. Based on prior research on walkability and related urban policies, this study selects Coomera Town on the Gold Coast of Queensland, Australia, as the research area because of Coomera Town policy regulations and environmental requirements. This study utilizes traditional qualitative and quantitative research methods, machine mining technology, and the deep learning big data analysis technology to conduct thematic design research in a real place. Its combines walkability evaluation with walkability design to construct a walkable city in a targeted manner. This provides a reference for related city design in the future.


2008 ◽  
pp. 813-821
Author(s):  
Chintha Perera ◽  
Sujeeva Setunge ◽  
Arun Kumar ◽  
Tom Molyneauxa

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