Study the Thermal Impact of Massive Waste Material to Building Construction

2012 ◽  
Vol 268-270 ◽  
pp. 945-951 ◽  
Author(s):  
Muhammad Abu Eusuf ◽  
Abdullah Al Hasan ◽  
Sharonee Sidek
Keyword(s):  
Energy Consumption ◽  
Thermal Environment ◽  
Construction Materials ◽  
Energy Performance ◽  
Vital Role ◽  
Waste Material ◽  
Thermal Impact ◽  
Energy Management Strategy ◽  
Indoor Thermal Environment

This study focuses on the recycling of massive waste materials and their thermal impact to buildings, which then adapt the indoor thermal environment. It is observed that the role of construction materials modify the building interior and consequently regulates the indoor thermal environment and focus on the reduction of energy consumption at large. The rapid growth of energy consumption has raised concerns in worldwide. This has caused mainly the exhaustion of energy resources. Efficient employs of energy play a vital role in minimizing the energy usage. Having in mind the aim to seek for contextual alternative building material from waste to obtain continuing improvement in building energy performance, then this study has been designed to do experiments on locally available massive waste material (end-of-life tires, or ELTs) and investigate its thermal impact on indoor energy management strategy. For that reason, it is needed to set up an experiment to observe the role of ELT for thermal comfort in a tropical climate as compared to conventional construction materials and other waste. This contribution mainly focuses on the literature and a proposed methodology.

scholarly journals Energy-saving potential of intermittent heating system: Influence of composite phase change wall and optimization strategy

2020 ◽  
pp. 014459872096921
Author(s):  
Yanru Li ◽  
Enshen Long ◽  
Lili Zhang ◽  
Xiangyu Dong ◽  
Suo Wang
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Phase Change ◽  
Air Temperature ◽  
Indoor Air ◽  
Thermal Environment ◽  
Optimization Strategy ◽  
Indoor Thermal Environment ◽  
Indoor Thermal Comfort ◽  
Intermittent Heating

In the Yangtze River zone of China, the heating operation in buildings is mainly part-time and part-space, which could affect the indoor thermal comfort while making the thermal process of building envelope different. This paper proposed to integrate phase change material (PCM) to building walls to increase the indoor thermal comfort and attenuate the temperature fluctuations during intermittent heating. The aim of this study is to investigate the influence of this kind of composite phase change wall (composite-PCW) on the indoor thermal environment and energy consumption of intermittent heating, and further develop an optimization strategy of intermittent heating operation by using EnergyPlus simulation. Results show that the indoor air temperature of the building with the composite-PCW was 2–3°C higher than the building with the reference wall (normal foamed concrete wall) during the heating-off process. Moreover, the indoor air temperature was higher than 18°C and the mean radiation temperature was above 20°C in the first 1 h after stopping heating. Under the optimized operation condition of turning off the heating device 1 h in advance, the heat release process of the composite-PCW to the indoor environment could maintain the indoor thermal environment within the comfortable range effectively. The composite-PCW could decrease 4.74% of the yearly heating energy consumption compared with the reference wall. The optimization described can provide useful information and guidance for the energy saving of intermittently heated buildings.

The Role of Bionic Modifications in Reducing Adhesion and Draft of Agricultural and Earthmoving Machinery

2013 ◽  
Vol 461 ◽  
pp. 553-561
Author(s):  
Rashid Qaisrani ◽  
Jian Qiao Li ◽  
Mohammad Iqbal
Keyword(s):  
Energy Consumption ◽  
Surface Morphology ◽  
Construction Materials ◽  
Force Analysis ◽  
Lubrication Mechanism ◽  
Limited Application ◽  
Practical Field ◽  
Adhesion Friction

Soil adheres to the surfaces of soil engaging components of earthmoving machinery and equipment. It has been pbserved that up to 50% of energy may be consumed in overcoming adhesion and friction of soil to the surfaces of soil engaging components of agricultural and earthmoving machinery. Surface morphology, chemical composition, elasticity, lubrication mechanism and electric osmosis play significant roles in reducing adhesion, friction and energy consumption of various equipment. Some of these techniques have very limited application in the practical field conditions because of the time and amount of fluid required to achieve the desired results. Whereas other techniques are effective in reducing adhesion and friction and improving work quality of these machines and equipment. This paper analyses the forces including the drafts of conventional and bionic bulldozing blades operating under identical conditions using mathematical modelling. The force analysis showed that both adhesion and friction play major role in reducing drafts of earrthmoving machinery. It is also worth stating that both the surface morphology and the construction materials play important role in reducing adhesion and friction of ground eganging components of earthmoving machinery.

scholarly journals Research on Annual Thermal Environment of Non-Hvac Building Regulated by Window-to-Wall Ratio in a Chinese City (Chenzhou)

2020 ◽  
Vol 12 (16) ◽  
pp. 6637
Author(s):  
Jiayu Li ◽  
Bohong Zheng ◽  
Xiao Chen ◽  
Yihua Zhou ◽  
Jifa Rao ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Building Material ◽  
Thermal Environment ◽  
Meteorological Data ◽  
Meteorological Station ◽  
Analytical Tool ◽  
Thermal Perception ◽  
Material Parameters ◽  
Indoor Thermal Environment ◽  
Chinese City

As the window-to-wall ratio, a microclimatic factor in residential districts, regulates the indoor thermal environment and implicates the energy consumption, this research was aimed at interpreting the microclimate effects of the window-to-wall ratio on the indoor thermal environment of the non-Hvac building located in the block from the view of a full year. Urban built parameters and building material parameters applied in Chenzhou were investigated, with the ENVI-met model serving as the analytical tool calculating the meteorological data recorded in the local national meteorological station. The thermal perception criterion of Chenzhou citizens was investigated, and thermal isotherms were employed to interpret the thermal perception distribution throughout the year. Analytical results revealed that the annual indoor thermal environment would deteriorate along with the growth of the window-to-wall ratio in Chenzhou, with the very hot thermal perception environment covering the months from March to October once the window-to-wall ratio outnumbered 60.00%. Furthermore, the hot and very hot thermal perception environments originated in the ranges of 0.00% to 20.00% and that of 20.00% to 40.00%, respectively. Furthermore, if the window-to-wall ratios (WWRs) outnumbered 40%, their effects on the indoor thermal perception environment would gradually decrease and be powerless once that exceeded 80%.

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