scholarly journals Sustainable Optimal Design Based on the Upgrade Demand of Macau's Traditional Stalls

2021 ◽  
Vol 236 ◽  
pp. 03035
Author(s):  
Yile Chen ◽  
Liang Zheng
Keyword(s):  
Optimal Design ◽  
Design Research ◽  
Base Stations ◽  
Current Status ◽  
Optimized Design ◽  
Solar Photovoltaic ◽  
Photovoltaic Panels ◽  
Future Design ◽  
Design Recovery ◽  
Live Broadcast

With the development of the city’s economy, Macau’s traditional stalls have been unable to meet the current needs. This design research is based on the current status of traditional stalls that are difficult to store, single functional structure, and old-style appearance, combined with the current new requirements of Macau for building a smart city. Foldable solar photovoltaic panels, mobile stall-type 5G base stations, and live broadcast equipment that echo the trend of the frontline proposed sustainable and optimized designs for upgrading and transformation, echoing the current hotly discussed “stalling economy”, and promoting the economy after the epidemic through optimized design recovery. At the same time, it also provides feasible reference suggestions for the future design of Macau stalls.

Solar Sacrifice: How an Arizona Church Lost Money by Going Solar—and Solutions for When Energy Incentives Fail to Serve the Needs of Nonprofits

2018 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
David Krantz
Keyword(s):  
Energy Consumption ◽  
Oral History ◽  
Policy Design ◽  
Religious Institutions ◽  
Solar Photovoltaic ◽  
The Sun ◽  
Photovoltaic Panels ◽  
Key Stakeholders ◽  
Oral History Interviews

By policy design, consumers are supposed to save money when they invest in solar energy. This paper presents a case study of what happens when a church goes solar and the finances go wrong. Following the installation of solar-photovoltaic panels, the Arizona church—in the Valley of the Sun, among the sunniest places in the country—decreased its energy consumption, but its electric bills went up. Through oral-history interviews of key stakeholders, the author investigates what happened, and what could be done to prevent other religious institutions and nonprofits from experiencing the church’s fate.

Comparison of a Thermoacoustic Refrigerator Stack Performance: Mylar Spiral, Celcor Substrates and 3D Printed Stacks

2019 ◽  
Vol 27 (03) ◽  
pp. 1950021
Author(s):  
N. A. Zolpakar ◽  
N. Mohd-Ghazali
Keyword(s):  
Optimal Design ◽  
Temperature Difference ◽  
Cooling System ◽  
Coefficient Of Performance ◽  
Design Parameters ◽  
Optimized Design ◽  
Multi Objective Genetic Algorithm ◽  
Potential Alternative ◽  
3D Printed ◽  
Thermoacoustic Refrigeration

Although the thermoacoustic refrigeration (TAR) system has been recognized as a potential alternative environmentally cooling system, the low coefficient of performance (COP) has yet to make it marketable. One major factor contributing towards the low COP is the fabrication method applied to the stack component which is the most important component in the TAR. In this paper, comparison of the performance of a (i) 3D printed stack, (ii) a hand fabricated Mylar stack and (iii) an off-the-shelf Celcor substrates stack has been done; these being based on optimized design parameters using Multi-Objective Genetic Algorithm (MOGA). The performance is determined from the temperature attained at the cold end of the stack and the temperature difference across the stack. Experimental results showed that the 3D printed stack has the best performance by achieving a temperature, [Formula: see text]C at the cold end and a temperature difference of [Formula: see text]C across the stack, about 60% of the designed temperature difference even though the fabricated 3D printed stack deviated from the optimal design due to fabrication constraint as compared to that of the Mylar stack which was closer to the optimal design. This 3D printing of the stack promises a big potential in the improvement of the TAR performance because of the consistency achievable with the precise dimensions of the stack.

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