Enhancement of the thermoelectric performance for DTC-based polymer via N-octyl substitution

2020 ◽  
Vol 8 (21) ◽  
pp. 7096-7103
Author(s):  
Houbo Zhou ◽  
Chunmei Gao ◽  
Tongchao Liu ◽  
Chengjun Pan ◽  
Lei Wang
Keyword(s):  
Carrier Concentration ◽  
Design Strategy ◽  
Polymer Materials ◽  
Thermoelectric Performance ◽  
Organic Polymer ◽  
Good Design ◽  
The Impact ◽  
Thermoelectric Parameters

Focusing on the impact of carrier concentration and mobility on thermoelectric parameters, a good design strategy was successfully implemented on dithiophene cyclopentadiene (DTC)-based organic polymer materials.

scholarly journals Can Architectural Surfaces Capture Atmospheric Particulate Matter Like Trees? A Design Strategy to Mimic Leaf Traits

2021 ◽  
Vol 13 (14) ◽  
pp. 7637
Author(s):  
Taekyoung Lee ◽  
Jieun Cha ◽  
Sohyun Sung
Keyword(s):  
Leaf Traits ◽  
Design Strategy ◽  
Atmospheric Particulate Matter ◽  
Porous Surface ◽  
Base Surface ◽  
Different Types ◽  
Pm2.5 And Pm10 ◽  
Micro Morphology ◽  
The Impact ◽  
Cluster Pattern

Trees’ ability to capture atmospheric Particular Matter (PM) is related to morphological traits (shape, size, and micro-morphology) of the leaves. The objectives of this study were (1) to find out whether cluster pattern of the leaves is also a parameter that affects trees’ PM capturing performance and (2) to apply the cluster patterns of the leaves on architectural surfaces to confirm its impact on PM capturing performance. Two series of chamber experiments were designed to observe the impact of cluster patterns on PM capturing performance whilst other influential variables were controlled. First, we exposed synthetic leaf structures of different cluster patterns (a large and sparsely arranged cluster pattern and a small and densely arranged cluster pattern) to artificially generated PM in a chamber for 60 min and recorded the changing levels of PM2.5 and PM10 every minute. The results confirmed that the small and densely arranged cluster pattern has more significant effect on reducing PM2.5 and PM10 than the large and sparsely arranged cluster pattern. Secondly, we created three different types of architectural surfaces mimicking the cluster patterns of the leaves: a base surface, a folded surface, and a folded and porous surface. The surfaces were also exposed to artificially generated PM in the chamber and the levels of PM2.5 and PM10 were recorded. The results confirmed that the folded and porous surface has a more significant effect on reducing PM2.5 and PM10 than other surfaces. The study has confirmed that the PM capturing performance of architectural surfaces can be improved by mimicking cluster pattern of the leaves.

Study on Ecological Design Strategy and Practice

2011 ◽  
Vol 374-377 ◽  
pp. 369-373
Author(s):  
Hua Li Zhang ◽  
Xiao Ling Dai ◽  
Hao Zhu
Keyword(s):  
Energy Consumption ◽  
Design Principle ◽  
Green Building ◽  
Design Strategy ◽  
Low Energy ◽  
Ecological Design ◽  
Good Design ◽  
Good Working ◽  
Working Environments ◽  
Low Energy Consumption

This paper explains and demonstrates why uses’ needs are as important as green design principle and a good design should consider a lot on human’s feeling. It suggests that future green building will be based on principles that fundamentally address many of the issues that have become to light from this research. They will offer good working environments in which people are able to work to the best of their ability, and have the added bonus of low energy consumption.

scholarly journals Enhancement of Thermoelectric Performance in CuSbSe 2 Nanoplate‐Based Pellets by Texture Engineering and Carrier Concentration Optimization

Small ◽  
2018 ◽  
Vol 14 (50) ◽  
pp. 1803092 ◽  
Author(s):  
Yubo Luo ◽  
Chengfeng Du ◽  
Qinghua Liang ◽  
Yun Zheng ◽  
Beibei Zhu ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Thermoelectric Performance

scholarly journals Enhancing the thermoelectric performance of Cu3SnS4-based solid solutions through coordination of the Seebeck coefficient and carrier concentration

2017 ◽  
Vol 5 (35) ◽  
pp. 18808-18815 ◽  
Author(s):  
Yuanbo Yang ◽  
Pengzhan Ying ◽  
Jinzhi Wang ◽  
Xianglian Liu ◽  
Zhengliang Du ◽  
...  
Keyword(s):  
Seebeck Coefficient ◽  
Carrier Concentration ◽  
Solid Solutions ◽  
Thermoelectric Performance

Through coordination of the Seebeck coefficient and carrier concentration in Cu3SnS4, TE performance improves significantly with the ZT value of 0.75 at 790 K.

Oxygen adsorption and its influence on the thermoelectric performance of polycrystalline SnSe

2019 ◽  
Vol 7 (34) ◽  
pp. 10507-10513 ◽  
Author(s):  
Mengmeng Zhang ◽  
Dongyang Wang ◽  
Cheng Chang ◽  
Tao Lin ◽  
Kedong Wang ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Oxygen Adsorption ◽  
Thermoelectric Performance

Oxygen is adsorbed when SnSe is exposed to air and it acts as a hole-like acceptor. The thermoelectric performance of n-type polycrystalline SnSe can be promoted through optimizing carrier concentration via preventing oxygen adsorption.

scholarly journals Design of advanced airfoil for stall-regulated wind turbines

2017 ◽  
Vol 2 (2) ◽  
pp. 403-413
Author(s):  
Francesco Grasso ◽  
Domenico Coiro ◽  
Nadia Bizzarrini ◽  
Giuseppe Calise
Keyword(s):  
Wind Turbines ◽  
Design Strategy ◽  
High Wind ◽  
Pitch Control ◽  
Turbine Performance ◽  
Gradient Based ◽  
Machine Control ◽  
And Control ◽  
The Impact ◽  
Numerical Optimisation

Abstract. Nowadays, all the modern megawatt-class wind turbines make use of pitch control to optimise the rotor performance and control the turbine. However, for kilowatt-range machines, stall-regulated solutions are still attractive and largely used for their simplicity and robustness. In the design phase, the aerodynamics plays a crucial role, especially concerning the selection/design of the necessary airfoils. This is because the airfoil performance is supposed to guarantee high wind turbine performance but also the necessary machine control capabilities. In the present work, the design of a new airfoil dedicated to stall machines is discussed. The design strategy makes use of a numerical optimisation scheme, where a gradient-based algorithm is coupled with the RFOIL code and an original Bezier-curves-based parameterisation to describe the airfoil shape. The performances of the new airfoil are compared in free- and fixed-transition conditions. In addition, the performance of the rotor is analysed, comparing the impact of the new geometry with alternative candidates. The results show that the new airfoil offers better performance and control than existing candidates do.

Enhanced thermoelectric performance of layered SnS crystals: the synergetic effect of temperature and carrier concentration

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56382-56390 ◽  
Author(s):  
Bao-Zhen Sun ◽  
Zuju Ma ◽  
Chao He ◽  
Kechen Wu
Keyword(s):  
Carrier Concentration ◽  
Synergetic Effect ◽  
Thermoelectric Performance ◽  
Effect Of Temperature ◽  
Effects Of Temperature

The synergistic deployment of the effects of temperature and carrier concentration raises the ZT of SnS to a high value (1.61 ± 0.02).

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