A Novel Application of Electric Heat

1900 ◽  
Vol 49 (1266supp) ◽  
pp. 20294-20295
Author(s):  
E. J. Hart
Keyword(s):  
Author(s):  
Sara Pazell ◽  
Robin Burgess-Limerick

An electric heat-in-transit tanker (bitumen trailer) revolutionized the operation and design of bituminous tankers. It was developed using human-centered approaches and design philosophy, concepts, methods, and tools previously used in the mining industry. Task-based analysis was useful to contextualize opportunities and hazards. The new tanker improved efficiency in transit, reduced risk for exposure to hot bituminous product, improved access, reduced on-road travel time and risk for fatigue, optimized work performance, and challenged regulators to redefine safe transit requirements. The design process was opportunity based and highlighted the need to shift philosophy to consider performance-based needs of operators, not just equipment.


Author(s):  
Ahmad Jawad ◽  
Mohd Suffian Misaran ◽  
Md. Mizanur Rahman ◽  
Mohd Azlan Ismail

Solar chimney power plant is a sustainable alternative for electricity generation using solar as the source of energy. In general, the main body of a solar chimney plant requires a tall structure which is costly and challenging to construct. Thus, it is important to increase the performance of the solar chimney power plant and have a better energy-cost ratio. This study aims to experimentally investigate the influence of divergent solar chimney as opposed to a cylindrical chimney on solar chimney performance. Three divergent scaled-down solar chimney model at 1-meter, 1.5-meter and 2-meter were fabricated and tested for its performance at various simulated heat loads. The test results were compared with similar heights cylindrical solar chimney. The experiments show that divergent solar chimney increases the theoretical power generation potential and improves the stalk effect and have higher outlet velocity compared to a cylindrical solar chimney. The power potential of the divergent chimney is increased up to 18 times with the maximum theoretical power obtain at 0.183W on the 2-meter divergent chimney. Higher temperature was recorded on the 2-meter divergent chimney outlet at 341.3k compared to 330.4k on the cylindrical chimney indicates better stack effect. The highest average velocities in the divergent and cylindrical chimneys were recorded under the electric heat load of 2 kW at 0.994 m/s and 0.820 m/s respectively in the 1-meter configuration. It is also observed that the air velocity in a shorter divergent chimney is higher than taller divergent chimney models while better compared to all cylindrical height. This study finds that a shorter divergent solar chimney produces greater energy compared to a higher cylindrical solar chimney. Therefore, it is possible to reduce the overall cost of solar chimney by reducing the height of the main structure without sacrificing the performance of the solar chimney.


2021 ◽  
Author(s):  
Li Mingtong ◽  
Wang Lidi ◽  
Zhu Sitong ◽  
Miao Yilin ◽  
Wang Xinyao

Author(s):  
RuiHong Xu ◽  
ZiDe She ◽  
JinPeng Chen ◽  
Bing-Yuh Lu ◽  
RuiLong Huang ◽  
...  

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