scholarly journals Use of Adaptable Simulation-based Virtual Laboratories for Teaching Alternative Energy and Energy Conservation in Engineering & Technology Programs

Author(s):  
Yakov Cherner ◽  
Ahmed Khan ◽  
Aminul Karim ◽  
Gary Mullett
2021 ◽  
pp. 0958305X2110153
Author(s):  
Chao Li ◽  
Xiangyou Li ◽  
Deyong Song ◽  
Meng Tian

Based on the panel data of 277 cities between 2003 and 2017 and a unique city-level dataset of green patent applications, this study employs the difference-in-differences (DID) method to evaluate the effect of China’s carbon emission trading scheme (ETS) pilots on urban green innovation. The findings indicate that China’s ETS pilots have a positive impact on urban green innovation, and that impact is more significant for municipalities than for prefecture-level cities. Furthermore, the impact on different categories of urban green innovation is heterogeneous. More specifically, China’s ETS pilots have significantly spurred urban green innovation that is closely related to energy conservation and emission reduction, including alternative energy production, transportation, energy conservation and so forth. Moreover, the facilitating effect of China’s ETS pilots on urban green innovation suffers from a lagging effect, which began to show a significant positive effect in 2016. Overall, this paper identifies the effect of China’s ETS pilots on urban green innovation, and suggests that the government should consider the heterogeneity of urban green innovation when designing national ETS policies.


Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2948
Author(s):  
Soufia Mohammadi ◽  
Pilar Monsalvete Álvarez de Uribarri ◽  
Ursula Eicker

Biogas technology is an important alternative energy source worldwide. Blackwater and kitchen refuse represent ideal waste streams for bioenergy recovery through anaerobic co-digestion. Modeling of the biokinetics of anaerobic digestion on several aspects, such as microbial activity, substrate degradation, and methane production, from co-digestion of black water (BW) and kitchen refuse (KR) was the objective of this research. A mathematical model was developed towards a simulation based on mass balances on biomass, the organic substrate, and biogas. The model was implemented in INSEL and experimental data from the literature were used for model validation. The study shows that the simulation results fit well with the experimental data. The energy consumption and generation potential of anaerobic co-digestion of BW and KR were calculated to investigate if the produced biogas could supply the digester’s energy demand. This study can be used to pre-design anaerobic digestion systems in eco-districts.


Author(s):  
S. Kant Vajpayee ◽  
David H. Loflin

Engineering technology programs in U.S colleges and universities were established by the 1970s. Their separate existence from engineering has resulted in mixed outcomes—some good, some bad, and some outright ugly. By ugly we mean the confusions generated by the divide between engineering and engineering technology. In this paper, critical analysis of the good, the bad, and the ugly is presented. It begins with a brief history of engineering technology as a discipline, discusses the current situation, points out the fact that few advanced countries practice such a divide, and offers some suggestions for improvement.


2020 ◽  
Author(s):  
Michael Mauk ◽  
Vladimir Genis ◽  
Dhruv Sakalley ◽  
Holly Burnside

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