scholarly journals Sustainable design for building envelope in hot ‎climates; a case study for the role of the dome as ‎a component of an envelope in heat exchange ‎

2018 ◽  
Vol 4 (2) ◽  
pp. 127-134 ◽  
Author(s):  
Dr. Akeel Noori Almulla Hwaish
Keyword(s):  
Heat Exchange ◽  
Sustainable Design ◽  
Building Envelope

scholarly journals Studying the Role of System Aggregation in Energy Targeting: A Case Study of a Swedish Oil Refinery

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 958 ◽  
Author(s):  
Elin Svensson ◽  
Matteo Morandin ◽  
Simon Harvey ◽  
Stavros Papadokonstantakis
Keyword(s):  
Heat Exchange ◽  
Heat Recovery ◽  
Process Integration ◽  
Heat Integration ◽  
Direct Process ◽  
Utility System ◽  
Process Heat ◽  
Definition Of

The definition of appropriate energy targets for large industrial processes is a difficult task since operability, safety and plant layout aspects represent important limitations to direct process integration. The role of heat exchange limitations in the definition of appropriate energy targets for large process sites was studied in this work. A computational framework was used which allows to estimate the optimal distribution of process stream heat loads in different subsystems and to select and size a site wide utility system. A complex Swedish refinery site is used as a case study. Various system aggregations, representing different patterns of heat exchange limitations between process units and utility configurations were explored to identify trade-offs and bottlenecks for energy saving opportunities. The results show that in spite of the aforementioned limitations direct heat integration still plays a significant role for the refinery energy efficiency. For example, the targeted hot utility demand is reduced by 50–65% by allowing process-to-process heat exchange within process units even when a steam utility system is available for indirect heat recovery. Furthermore, it was found that direct process heat integration is motivated primarily at process unit level, since the heat savings that can be achieved by allowing direct heat recovery between adjacent process units (25–42%) are in the same range as those that can be obtained by combining unit process-to-process integration with site-wide indirect heat recovery via the steam system (27–42%).

scholarly journals Identification of the Building Envelope Performance of a Residential Building: A Case Study

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2469
Author(s):  
Evi Lambie ◽  
Dirk Saelens
Keyword(s):  
Heat Exchange ◽  
Real Life ◽  
Residential Building ◽  
Poor Performance ◽  
Energy Performance ◽  
Building Envelope ◽  
Calculation Methods ◽  
Characterization Methods ◽  
Target Values

Since households are one of the most energy-intensive sectors in Europe, retrofit of dwellings is promoted to increase energy efficiency. Recent research, however, shows that the energy performance after retrofit does not always meet the target values, which can be caused by amongst other things, a deviating building envelope performance. This paper compares the theoretical and measured building envelope performance for a real-life case study in post-retrofit state, in order to illustrate the limitations of calculation methods and characterization models. First, the performance is evaluated on building scale by verifying the correspondence between the default theoretical heat loss coefficient (HLC) and the measured HLC, which was determined by following the guidelines formulated within IEA EBC Annex 58 and Annex 71. In order to illustrate the limitations of the standard calculation method in real-life conditions, the theoretical variability of the HLC is evaluated, generated by variating infiltration heat losses and heat exchange with neighboring dwellings. Second, the performance is investigated on a component scale by assessing the theoretical and measured thermal resistances, identified from heat flux tests. Additionally, nonhomogeneous assembled components and air leaks are simulated to verify probable causes for the locally varying measured values and to illustrate the limitations of calculations and characterization methods. The results illustrate the limitations of the calculation methods by the assessment of the strong variability of the theoretical HLC, depending on assumptions regarding infiltration and heat exchange with neighboring dwellings. In addition, component simulations indicated that deficiencies on a component scale could be caused by a nonhomogeneous assembly and air cavity flows of the component. Moreover, a detailed assessment of an unreliable thermal resistance illustrates the limitations of the used characterization method. Finally, a contrast was found between the quite good performance on building scale (15% deviation between the theoretical and measured HLC) and poor performance on a component scale (only one out of nine monitored components met their theoretical target values), which illustrates the complexity of the building envelope performance.

scholarly journals Research on the Application of Sustainable Design in 3D Animated Characters——A Case study of budding bear

2021 ◽  
Vol 236 ◽  
pp. 05071
Author(s):  
Yang Cui
Keyword(s):  
Theoretical Basis ◽  
Sustainable Design ◽  
Three Dimensional ◽  
Comprehensive Analysis ◽  
Artistic Expression ◽  
Expression Study ◽  
Type Design ◽  
Animated Characters

This topic with the examples of budding bear series guided by the sustainable design, in the three dimensional animation role in comprehensive analysis comparison, induction and summary, hope through sustainable design to promote the role of the three dimensional animation application and development, under the three dimensional animation role in sustainable design of artistic expression and innovation concept, for the application of sustainable design in the three dimensional animation role study provide theoretical basis. This article first budding bear series 3 d animation, for example, analysis of sustainable design in the application of the three dimensional animation role, introduce bud bear series animation content, sustainable design were discussed from the six aspects of artistic expression in the three dimensional animation artistic expression, study plants, animals, machinery and other types of 3 d animation role type design; Finally, it summarizes the advantages and limitations of sustainable design in the application of 3D animated characters, lists the research cases of sustainable design in the application and innovation of 3D animated characters, and makes a comparative analysis with the series of works of Budding Bear.

Cooltek House in Malaysia

2011 ◽  
Vol 224 ◽  
pp. 120-124 ◽  
Author(s):  
Ismail Muhammad Azzam ◽  
Abdul Rashid Fahanim
Keyword(s):  
Air Conditioning ◽  
Indoor Environment ◽  
Climatic Conditions ◽  
Building Envelope ◽  
Design Strategies ◽  
Indoor Temperature ◽  
Residential Electricity ◽  
Residential Air Conditioning

Currently, there is a distinct lack of innovative approaches to designing and building houses in Malaysia that could overcome the harsh climatic conditions to achieve thermal comfort. At the same time, demand for residential air-conditioning units has skyrocketed due to the lifestyle expectations of home buyers, the low prices of the units and the very low national residential electricity tariff. Most existing and new houses are not designed to be air-conditioned properly due to poor building material selections and endemic construction practices. These houses are not sealed and are thermally inefficient. Besides looking back to the indigenous passive solar design strategies, new design paradigms have to be explored and promoted for the benefit of all. One innovative approach that has been well-developed and proven successful is the Cooltek concept which was first used at a private bungalow in Melaka, Malaysia. The overarching principle of this concept is to reverse the role of the building envelope of colder climates from keeping the heat inside the building to keeping the heat out of the building which could provide a more conducive indoor environment for air-conditioning in order to reduce the indoor temperature and the relative humidity with minimal use of electricity. This paper describes the Cooltek concept and a case study in detail and how the concept works.

The role of multiplicity in a cult: A case study

1987 ◽  
Author(s):  
William A. Worrall ◽  
Ann W. Stockman

Endangered Butterflies and their Non-Native Host Plants: Examining Shifting Values of Belonging in Restoration

2019 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Robert M. Anderson ◽  
Amy M. Lambert
Keyword(s):  
Ecological Restoration ◽  
Native Species ◽  
Puget Sound ◽  
A Value ◽  
The Social ◽  
Remote Island ◽  
Scientific Truth ◽  
Native Host

The island marble butterfly (Euchloe ausonides insulanus), thought to be extinct throughout the 20th century until re-discovered on a single remote island in Puget Sound in 1998, has become the focus of a concerted protection effort to prevent its extinction. However, efforts to “restore” island marble habitat conflict with efforts to “restore” the prairie ecosystem where it lives, because of the butterfly’s use of a non-native “weedy” host plant. Through a case study of the island marble project, we examine the practice of ecological restoration as the enactment of particular norms that define which species are understood to belong in the place being restored. We contextualize this case study within ongoing debates over the value of “native” species, indicative of deep-seated uncertainties and anxieties about the role of human intervention to alter or manage landscapes and ecosystems, in the time commonly described as the “Anthropocene.” We interpret the question of “what plants and animals belong in a particular place?” as not a question of scientific truth, but a value-laden construct of environmental management in practice, and we argue for deeper reflexivity on the part of environmental scientists and managers about the social values that inform ecological restoration.

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