Strategy for Application of Non-Wood Fibrous Material on Roofs at Rurual Areas in Cold Region

2015 ◽  
Vol 730 ◽  
pp. 105-108
Author(s):  
Xin Ran Wang ◽  
Yu Zhang
Keyword(s):  
Fibrous Material ◽  
Thermal Environment ◽  
Material Selection ◽  
Poor Quality ◽  
Engineering Practice ◽  
Construction Technology ◽  
Design Strategies ◽  
Cold Region ◽  
Climate Conditions ◽  
Insulation Performance

Large energy consumption, serious pollution and poor quality of indoor thermal environment are generally seen during construction in villages and towns in China nowadays, leading to poor building insulation performance. Envolope of enclosure of a buidling is key to its insulation performance. Material selection of building enclosures and green design of construction technology are the key to promoting insulation performance of the building as villages and towns in cold region are subject to special geographical position, climate conditions and economic factors. With a focus on research of traditional non-wood fibrous material modification with existing technology and the engineering practice in non-wood fibre roof in villages and towns of cold region, this paper came up with the prospects of its applicatin in the following design strategies including “ecological and conservation-oriented roofing with modified local materials, new hybrid roofing with simplified construction technology and paper tensioning roofing with innovative synthetic materials”.

scholarly journals Indoor Thermal Environment and Occupant’s Living Pattern of Traditional Timber Houses in Tropics

Designs ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 10
Author(s):  
Rezuana Islam ◽  
Khandaker Shabbir Ahmed
Keyword(s):  
Architectural Design ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Well Being ◽  
Construction Technology ◽  
Design Strategies ◽  
Policy Makers ◽  
Indoor Thermal Environment ◽  
Local Construction ◽  
Questionnaire Surveys

Traditional timber houses in tropics have specific environmental characteristics that evolved considering material constraints, local construction technology and climate. To provide occupants with the necessary comfort, these naturally ventilated houses adopted several passive design strategies. Moreover, occupants have unique living patterns which may have contributed towards achieving indoor thermal comfort. However, scientific knowledge regarding these issues is still limited. Therefore, considering traditional timber houses of Bangladesh as sample cases, this study aims to investigate existing relationship between an indoor thermal environment and an occupant’s living pattern within these tropical houses. Physical measurement of thermal parameters and questionnaire surveys followed by personal observations were conducted. Findings show that indoor air temperature (AT °C) fluctuates readily with that outdoors without a timelag resulting in daytime overheating. The occupant’s daytime thermal sensation is mostly slightly warm to hot. Semi-open and outdoor shaded spaces become a way to cope with the daytime overheating period. Occupants frequently use indoor spaces during the night when thermal sensation ranges between neutral to slightly cool. Finally, from the findings an interpretational graph has been developed relating indoor thermal environment with occupant’s living pattern within a traditional timber house. Findings will contribute to professionals and policy-makers developing architectural design strategies that may impact the occupant’s well-being in future.

Effects of thermal environment on elderly in urban and rural houses during heating season in a severe cold region of China

2019 ◽  
Vol 198 ◽  
pp. 61-74 ◽  
Author(s):  
Huibo Zhang ◽  
Ya Chen ◽  
Jingwen Rui ◽  
Hiroshi Yoshino ◽  
Jinfeng Zhang ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Heating Season ◽  
Cold Region

scholarly journals CHALLENGES IN ENGINEERING DESIGN EDUCATION: VERTICAL AND LATERAL LEARNING

2015 ◽  
Author(s):  
Aleksander Czekanski ◽  
Maher Al-Dojayli ◽  
Tom Lee
Keyword(s):  
Engineering Education ◽  
Engineering Design ◽  
Design Education ◽  
Engineering Students ◽  
Engineering Practice ◽  
Design Strategies ◽  
Engineering Design Education ◽  
Advanced Analysis ◽  
Capstone Projects ◽  
Team Design

Engineering practice and design in particular have gone through several changes during the last two decades whether due to scientific achievements including the evolution in novel engineering materials, computational advancements, globalization and economic constraints as well as the strategic needs which are the drive for innovative engineering. All these factors have impacted and shaped to certain extent the educational system in North America and Canada in particular. Currently, high percentage of the engineering graduates would require extensive training in industry to be able to conduct reliable complex engineering designs supported by scientific verification and validation, understand the complete design stages and phases, and identify the economic and cultural impact on such designs. This task, however, faces great challenges without educational support in such vastly changing economy.Lots of attention has been devoted to engineering design education in the recent years to incorporate engineering design courses supported by team design projects and capstone projects. Nevertheless, the lack of integrated education system towards engineering design programs can undermine the benefits of such efforts. In this paper, observations and analysis of the challenges in engineering design are presented from both academic and industrial points of view. Furthermore, a proposed vertical and lateral engineering education program is discussed. This program is structured to cover every year of the engineering education curricula, which emphasizes on innovative thinking, design strategies, support from and integration with other technical engineering courses, the use of advanced analysis tools, team collaboration, management and leadership, multidisciplinary education and industrial involvement. Its courses have just commenced for freshmen engineering students at the newly launched Mechanical Engineering Department at the Lassonde School of Engineering, York University.

scholarly journals THERMAL COMFORT INVESTIGATION ON HOLY MOSQUE IN BANDUNG Case Study : Lautze 2 Mosque Bandung

2020 ◽  
Vol 2 (1) ◽  
pp. 82
Author(s):  
Agung Prabowo
Keyword(s):  
Thermal Comfort ◽  
Quantitative Research ◽  
Thermal Environment ◽  
Tropical Climate ◽  
Air Humidity ◽  
Air Velocity ◽  
Related Factors ◽  
Climate Conditions ◽  
Comfort Index ◽  
Main Factors

Abstract -Thermal comfort is a state of mind that expresses satisfaction with the thermal environment. There are two main categories in the effort to obtain a comfort index; empirical and analytical. Empirical is based on social surveys, while analysis is based on the physics principle of heat flow.Bandung city is one of the historical cities in Indonesia which has many historical heritage buidings. One of them which is commonly known as colonial buildings in Bandung is Lautze 2 Mosque, located at Tamblong Street in the city center of Bandung. This research was conducted to analyze the thermal comfort in the Lautze 2 Mosque Bandung. The analytical method used in this study is a quantitative research method by measuring the main factors namely air temperature, air humidity and air velocity. The main factors become obstacles to get thermal comfort data at the Lautze 2 Mosque Bandung is the location of buildings located in areas with tropical climate conditions with high air temperatures, high air humidity, and low air velocitys.The research conclude that thermal comfort in the Lautze 2 Mosque Bandung building can be categorized as uncomfortable, it can be seen from the measurement results of related factors, namely the temperature and humidity that exceeds the comfort limit and the low air velocity in the building becomes an obstacle to obtain thermal comfort. Keywords: colonial buildings, mosque, thermal comfort, tropical climate.

Research of Large LNG Tank Structure

2014 ◽  
Vol 1070-1072 ◽  
pp. 378-382
Author(s):  
Ting Ke Li ◽  
Jia Di Li ◽  
Li Fu Xiao ◽  
Wei Li
Keyword(s):  
Storage Tank ◽  
Material Selection ◽  
Type Material ◽  
Size Optimization ◽  
Construction Technology ◽  
Cryogenic Storage ◽  
Lng Tank ◽  
Over Time

In recent years, the demand of Large LNG storage tank increases over time, but large LNG cryogenic storage tank has not yet established a series of standards and norms, and tank construction technology is also lagging behind. Aiming at the design of the tank form a single, smaller, did not tackle the issue of, this paper mainly discusses from Large LNG tanks, such as type, material selection, structure ,size optimization and so on, which can provide reference for independent construction of storage tank.

scholarly journals Relation between energy use and indoor thermal environment in animal husbandry: a case study

2019 ◽  
Vol 111 ◽  
pp. 01042
Author(s):  
Matteo Bilardo ◽  
Lorenzo Comba ◽  
Paolo Cornale ◽  
Andrea Costantino ◽  
Enrico Fabrizio
Keyword(s):  
Relative Humidity ◽  
Animal Welfare ◽  
Thermal Environment ◽  
Animal Husbandry ◽  
Electrical Energy ◽  
Indoor Climate ◽  
Climate Conditions ◽  
Indoor Thermal Environment ◽  
Data Loggers ◽  
Energy Consumptions

Climate control is of the foremost importance in structures for intensive animal rearing because many animals (e.g. pigs and broilers) tolerate a small range of climate conditions (mainly air temperature and relative humidity) that may differ considerably from the outdoor environment. For this reason, the indoor climate in the majority of structures for animal husbandry is guaranteed by HVAC systems. On the one hand, the use of mechanical systems makes it possible to avoid production risks due to the unpredictability of the outdoor weather conditions and to maximize the feed efficiency, with positive effects on both the animal welfare and farm profit. On the other hand, the use of HVAC entails not negligible thermal and electrical energy consumptions. In literature, few data about the real thermo-hygrometric conditions and energy consumption of animal houses are present. In this work (in the framework of the EPAnHaus – Energy Performance certification of Animal Houses –project), the results obtained from a long-term monitoring campaign in two growing-finishing pig houses are presented. The performed measurements concerned environmental parameters and electrical power that were acquired during two production cycles (warm and cool seasons). For the environmental monitoring, both the buildings were equipped with temperature and relative humidity sensors embedded in portable data loggers (10 minutes logging time) that were placed in various spots inside the houses. Outdoor data were obtained through a weather station located near the test site. Concerning the energy monitoring, power transducers connected to portable data loggers (10 seconds logging time) were placed in the electric panel of each house to log the electrical energy consumptions due to ventilation, lighting and automatic feeding. The acquired data were used for carrying out analysis concerning the indoor thermal environment, its characterization in relation with the animal welfare, the electrical energy uses and the existing relations between all these aspects. The obtained data were used to evaluate the effectiveness of the HVAC system in guaranteeing the adequate indoor climate conditions (avoiding heat/cold stress conditions) and to identify electrical energy uses.

Exploration on Traditional Courtyard Micro-Climate Characteristics and Improvement Method - Case Study of No. 6 Courtyard of Chang'anxue Alley in Xi'an Sanxuejie Historic District

2013 ◽  
Vol 357-360 ◽  
pp. 1918-1927 ◽  
Author(s):  
Ruo Bing Fan ◽  
Xiao Ming Li
Keyword(s):  
Sustainable Development ◽  
Thermal Environment ◽  
Urban Expansion ◽  
Historic District ◽  
Climate Conditions ◽  
Historic Districts ◽  
Improvement Method ◽  
New Perspective

Xian Sanxuejie district is a typical historic district of the city. Presently this type of traditional districts is surrounded by many modern buildings due to the rapid urban expansion. The historic districts are facing problems of poor courtyard micro-climate conditions and low living level, which has become the bottleneck of historic districts sustainable development. This paper studies thermal environment, luminous environment, solar environment and wind environment from a new perspective using Ecotect building environment analyzing software. The author explores micro-climate improving method suitable for traditional courtyard in order to promote micro-climate quality of historic district and to improve the comfort of local residences. The purpose is to achieve sustainable development of historic districts.

Deep Well of Coal Roadway Bolt-Cable Mechanism Analysis and its Engineering Application

2012 ◽  
Vol 226-228 ◽  
pp. 1094-1097 ◽  
Author(s):  
Bai Xiao Tang ◽  
Yong Wei Wang
Keyword(s):  
High Stress ◽  
Soft Rock ◽  
Engineering Practice ◽  
Construction Technology ◽  
Mechanism Analysis ◽  
Small Aperture ◽  
Deep Well ◽  
Coal Roadway ◽  
Geological Conditions ◽  
Support Cost

Cable Anchor Supporting mechanism theory analysis, combined with high geostress, composite roof and complex geological conditions, the deep well under conditions of coal roadway by small aperture, anchor on the form of the structure and high prestressed construction technology, engineering practice shows that the technology is simple and applicability,is deep well solve the high stress soft rock tunnel, large sections into bifurcation point supports of the effective way of the problem. Not only reduces the support cost, reduce the workload of the Lane repair, and also greatly reduce the labor intensity of construction personnel, improve the reliability of the engineering safety. Accumulated experience, has broad application prospects for the deep well under the conditions of the other coal mine soft rock roadway

On the Construction Technology and Quality Control of Vacuum Combined Surcharge to Foundation Reinforcement

2014 ◽  
Vol 1030-1032 ◽  
pp. 827-829 ◽  
Author(s):  
Ze Jun Liu ◽  
Ya Guo ◽  
Qi Wang Yuan ◽  
Bao Hai Chen ◽  
Xiang Yang Gu ◽  
...  
Keyword(s):  
Soft Soil ◽  
Soft Clay ◽  
Engineering Application ◽  
Economic Benefits ◽  
Engineering Practice ◽  
Strengthening Effect ◽  
Construction Technology ◽  
Soil Consolidation ◽  
Vacuum Preloading ◽  
Soft Clay Subgrade

The vast area of distribution of soft clay with poor engineering property of our country, on the soft clay subgrade treatment by drainage consolidation method. As a kind of drainage consolidation method, vacuum preloading consolidation of soft soil foundation in recent years have been widely used, and achieved very good engineering and economic benefits. The theory research about vacuum preloading behind the engineering practice, restricted the further development of the technology and engineering application, it is necessary to make a systematic study. Through the comparative analysis of the test results, the vacuum causes soil consolidation, on this basis, the surcharge preloading and vacuum preloading contrast of the vacuum preloading mechanism, analyzes various factors foundation reinforcement finally strengthening effect by vacuum preloading.

Climatic Strategies of Indoor Thermal Environment for Residential Buildings in Yangtze River Region, China

2011 ◽  
Vol 20 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Baizhan Li ◽  
Wei Yu ◽  
Meng Liu ◽  
Nan Li
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Yangtze River ◽  
Air Conditioning ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Residential Buildings ◽  
Design Strategies ◽  
River Region ◽  
Climatic Adaptability

Yangtze River Valley is situated within the Hot Summer and Cold Winter zone, and residents in this region of China would require HVAC system to alleviate thermal comfort conditions, although this is tempered by the Design Code (DBJ50-071-2007) for energy efficiency. A 1-year survey of about 200 residential homes was carried out in eight cities covering the breadth of the region. The acceptable temperature range for the residents in this area was 16.3—28.1°C and the thermal neutral temperature was found to be 27.6°C in summers and 17.5°C in winters. People in different area can vary in their adaptability and comfortableness. Therefore, there is a need to investigate the national comfort parameter introduced in the Code for Design of Heating and Ventilation and Air Conditioning (GB50019-2003). The results found that if air-conditioning system was set to 27.5°C instead of 26°C as required by GBJ19-87: Design Standard of Heating and Ventilation and Air Conditioning, a 16.5% saving of energy consumption could be achieved. The findings demonstrated the role of natural ventilation in the expansion of the thermal comfort zone for the residents, especially during the summer seasons. A climatic adaptability model has been established by this study to contribute to the passive climatic design strategies for a better economic and energy efficiency of buildings.

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