scholarly journals Evaluating economic and environmental aspects of using solar panels on multi-angled facades of office buildings

2017 ◽  
Author(s):  
Loay Akram Hannoudi ◽  
Michael Lauring ◽  
Jørgen Erik Christensen
Author(s):  
Muhammadiya Rifqi ◽  
Heni Fitriani ◽  
Puteri Kusuma Wardhani

Buildings contribute more than 40% of world energy consumption, so it is feared that it will cause energy problems in thefuture, especially in the construction sector. One solution to reducing this problem is by analyzing energy use at the initialdesign stage and utilizing solar energy as one of the solar power plants (PLTS) in office buildings. To analyze the use ofenergy in buildings, Building Information Modeling (BIM) was used. The purpose of this research is to analyze the annualenergy level of office buildings in Palembang using BIM software, namely Autodesk Revit. The number of solar panels aswell as the amount of energy were also identified using web-based software (HelioScope) resulting the economic feasibilityas indicated by the installation of solar panels as a component of PV mini-grid. The results showed that the use of BIMtechnology in analyzing building energy can provide a detailed description of the building model at the design stage. Revitanalysis indicates that the building consumed electrical energy per year for about 3,647,713 kWh with a roof area of 1,657m2. In addition, based on the HelioScope analysis, the use of renewable energy from the installation of PLTS was 152,900kWh/year. Meanwhile, for economic feasibility analysis, the installation of PLTS in office buildings can provide a positive NetPresent Value (NPV), indicating a feasible project.


Author(s):  
Michael Nosonovsky

“Green tribology” is the concept that was introduced in 2009 by the founder of Tribology, Prof. P. Jost, who defined it as “the science and technology of the tribological aspects of ecological balance and of environmental and biological impacts.” This includes tribological technology that mimics living nature (biomimetic surfaces) and thus is expected to be environment-friendly, the control of friction and wear that is of importance for energy conservation and conversion, environmental aspects of lubrication and surface modification techniques, and tribological aspects of green applications such as the wind-power turbines, tidal turbines, or solar panels. It is clear that a number of tribological problems could be put under the umbrella of “green tribology” and is of mutual benefit to one another. Biomimetic applications are of particular interest for the Green Tribology, because of their environment-friendliness. Nosonovsky and Bhushan suggested the “12 principles of the Green Tribology.” The common feature in various biomimetic surfaces is their hierarchical structure and the ability for self-organization. I will discuss the principles of self-organization in hierarchical tribological systems on the basis of the concepts of the non-equilibrium thermodynamics (the Onsager formalism). In particular, I will show that the thermodynamic approach in tribology can yield new and practically important results.


Author(s):  
Panagiota Antoniadou ◽  
Effrosyni Giama ◽  
Sandro Nižetić ◽  
Agis M. Papadopoulos

2018 ◽  
Vol 22 (Suppl. 3) ◽  
pp. 819-830 ◽  
Author(s):  
Panagiota Antoniadou ◽  
Effrosyni Giama ◽  
Agis Papadopoulos

Environmental aspects are of high priority for the identification and evaluation of the parameters that affect the design and construction of buildings. Their improvement in case of the existing European building stock while considering and maintaining the occupants? comfort sensation in high levels, is imperative for creating an environmental friendly building. The combination of those aspects can upgrade the indoor conditions leading to the creation of an appealing workspace where the well fair of the occupants is established. In this line of approach, an integrated evaluation of the indoor environmental parameters was conducted in office buildings, located in Thessaloniki, Greece, based on the occupants? comfort sensation. Main goal of the study is the determination of the existing correlations between the perceived comfort sensation and a variety of environmental parameters considered in building rating certification schemes. Those correlations can outline the weight of every aspect based on the occupants' view and also help the policy makers to accomplish the vision of an environmental sustainable, not only concerning the energy consumption but also the occupants, building.


2019 ◽  
Vol 46 (12) ◽  
pp. 1103-1113 ◽  
Author(s):  
Kyuman Cho ◽  
Jungwoo Kim ◽  
Taehoon Kim

The construction industry engages in renovation work to improve the physical, economic, and environmental aspects of office buildings. During consideration of renovation of deteriorated office buildings, it is critical for project owners to estimate the change in monetary value of the office buildings due to the completed renovation work. Nevertheless, related research and methods for predicting this value remain insufficient. In this study, the monetary value prediction model for post-renovation office buildings was developed by using artificial intelligence techniques and multivariate data analysis techniques based on 90 actual cases of renovated office buildings. The model application results showed (i) relatively high prediction performance (average error rate of 14.12%) and (ii) advantages in various aspects compared to existing approaches. It is expected that project owners considering office building renovations can be supported in decision-making by the developed proposed model. Furthermore, this research will contribute to promoting the office building renovation market.


Crisis ◽  
2014 ◽  
Vol 35 (5) ◽  
pp. 292-300 ◽  
Author(s):  
Rebecca Soole ◽  
Kairi Kõlves ◽  
Diego De Leo

Background: Suicide among children under the age of 15 years is a leading cause of death. Aims: The aim of the current study is to identify demographic, psychosocial, and psychiatric factors associated with child suicides. Method: Using external causes of deaths recorded in the Queensland Child Death Register, a case-control study design was applied. Cases were suicides of children (10–14 years) and adolescents (15–17 years); controls were other external causes of death in the same age band. Results: Between 2004 and 2012, 149 suicides were recorded: 34 of children aged 10–14 years and 115 of adolescents aged 15–17 years. The gender asymmetry was less evident in child suicides and suicides were significantly more prevalent in indigenous children. Children residing in remote areas were significantly more likely to die by suicide than other external causes compared with children in metropolitan areas. Types of precipitating events differed between children and adolescents, with children more likely to experience family problems. Disorders usually diagnosed during infancy, childhood, and adolescence (e.g., ADHD) were significantly more common among children compared with adolescents who died by suicide. Conclusion: Psychosocial and environmental aspects of children, in addition to mental health and behavioral difficulties, are important in the understanding of suicide in this age group and in the development of targeted suicide prevention.


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