Green Building Technologies and Materials II

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Authors: Lamberto Tronchin
Abstract: The energy performance of buildings (EPB) is usually calculated by reference to winter conditions. All standards, technical, normative and national laws consider building calculation of costs and energy performance during winter months. The energy performance of a building is related to outside temperature and comfortable inside temperature, therefore EPB depends on external weather trends. The “measure unit” of weather trends, used in some calculation models, is the Day Degree which represents the hours when the outside temperature is below the inside temperature standard. However, world climate changes and the diffusion of HVAC (Heating, Ventilation and Air Conditioning) systems, especially single-unit systems (split system), introduced the concept of comfort in the summer months and weather derivates - Hot Day Degree (HDD) and Cool Day Degree (CDD) used to establish weather risks for insurance purposes. HDD and CDD can be used to plan, check and evaluate energy performance before and after an energy project. To evaluate energy performance in a building in summer conditions we can use the studies on comfort perceptions to translate a Day Degree concept in “measured units” to evaluate with respect to a normalised cooling regime. In this article the outside temperature Summer Day Degree trend is proposed, within fixed temperature values (comfort range), humidity, wind velocity, and radiation incidence. Moreover, an example of how the Summer Day Degree can be applied is presented.
Authors: Min Zhang, Jing Kong, Juan Wang, Ming Ma
Abstract: During the reconstruction design of exterior public space in Chaogewenduer Gacha, this study tried to do some applications of energy saving technolog, such as the space scales reconstitution, use of water saving measures and methane tanks, then put forward suggestions for the next building energy conservation design, such as use of passive solar houses and cow-dungs fuel, reuse of the yurts and so on. All of these proposed the sustainable living patterns for ecological immigrant settlements.
Authors: Hong Gao, Qiang Li, Guo Lv
Abstract: In China, green management of a construction project’s full life-cycle is an essential step the construction industry has to take towards achieving sustainable development. This paper outlines the implementation of green management based on the contents of a construction project. It discusses green management over the entire life-cycle of the project from design, construction, use to removal phase. Finally, the paper concludes how to assure the implementatation of green management of construction projects through establishing environmental quality assessment and evaluation systems.
Authors: Won Duck Seo, Kang Guk Lee
Abstract: This study presents the application method of the intelligent facade and interactive design of environment-friendly buildings. The planning elements of the environment-friendly and intelligent skin design include (1) energy power generation system, (2) solar ray control system, (3) indoor climate control system, and environment-friendly buildings. An introduction for technologies relevant to these planning elements is yet to be explored in this early stage of the study. An introduction is presented for the new skin design method in response to the critical aspect and present era of facilitating high-tech equipment.
Authors: Suleiman Aliyu Shika, Maimunah Sapri, Ibrahim Sipan, Alkali Ibrahim Abubakar, Aminu Umar, Usman Bukar Wakawa
Abstract: Simulation tools represent continuous, stochastic processes in buildings by discrete time-step, deterministic model estimations. All models make assumptions when representing real buildings. Detailed models more closely represent the operation of the real building and allow Energy Conservation Measures (ECM) to be investigated at finer resolution, using fewer assumptions. This paper presents a systematic, evidence-based approach to calibrated simulation. This approach yields a calibrated model that is based solely on referenced sources of information about the building. The proposed methodology builds on some of the best techniques from the reviewed literature and combines these with an evidence-based approach that uses version control software to track the calibration process.Although the process produces a single, deterministic model for an inherently stochastic process (building operation), such an approach can produce meaningful conclusions where sub-utilities hourly measured data and significant resources for further investigation and measurement are available.
Authors: Won Duck Seo
Abstract: The purpose of this study is to survey the characteristics of the building’s skin design structure necessary for facilitating solar energy, defining the design factors, and presenting the technique in the actual application. The building’s skin design requires an application plan based on the characteristics and status of the building structure. The application plan corresponds with regional requirement, climate, and other factors.
Authors: Xu Zhang, Feng Lu, Yin Fei Yan
Abstract: By investigating and analyzing the building envelope and energy consumption of old buildings in hot summer and cold winter regions in China, and with applying integrated passive energy-saving methods, the article puts forward several reasonable and practical energy saving strategies for old teaching buildings. Three aspects are examined, namely the transformation of solar window, the transformation of external wall insulation and the transformation of eco-roof, following the renovation of No.7 Teaching Building in Chongqing University.
Authors: Jae Sik Kang, Ji Hye Lim, Gyeong Seok Choi, Seung Eon Lee
Abstract: In this paper, the status of South Korea's policy (i.e., major support measures and energy performance standards) for the achievement of zero-energy buildings was investigated. Development of a high-performance envelopment system and its performance were also analyzed. The South Korean government has been proclaiming and enacting standards and ordinances related to green buildings since 1999. In 2008, it announced more specific and detailed regulations based on the Framework Act on Green Growth, which presents annual greenhouse gas emission reduction goals and mandates the realization of zero-energy buildings by 2025. To meet these legal standards and achieve the country’s energy-saving goals, the high-performance building envelop system was developed. The insulation performance of this system turned out to be equal or higher than the insulation performance standards for passive houses. It is expected that the use of the high-performance envelop system and renewable energy will contribute to realizing the nation's goal of mandatory application of zero-energy apartment houses.
Authors: Lei Fu, Qian Fei Shi
Abstract: Traditional dwellings in Shanxi province have a poor insulation performance. This paper focused on improving their winter indoor temperature. The measurement is using cement expanded perlite mortar and polyethylene plastic foam board as thermal insulation materials to transform outer walls, in combination with Autodesk Ecotect Analysis software to calculate temperature variation. Result shows that our transform method can increase interior temperature effectively.

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