scholarly journals Exploring the Feasibility of Ventilation without Shafts for an Ultralong Subsea Tunnel in the Bohai Strait Channel

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Yimin Wu ◽  
Peng Xu ◽  
Weiming Liang ◽  
Shuai Shao ◽  
Kaixun Hu ◽  
...  
Keyword(s):  
Ventilation Rate ◽  
Emission Rates ◽  
The European Union ◽  
Longitudinal Ventilation ◽  
New Energy ◽  
Infrastructure Project ◽  
European Method ◽  
New Energy Vehicle ◽  
Standards Base ◽  
Bohai Strait

The Bohai Strait Channel (BSC) is a strategic infrastructure project connecting the Shandong Peninsula and northeastern China. One challenge related to building the BSC tunnel portion is that ventilation shafts cannot be constructed due to certain limitations, which leads to a barrier for ventilation design. To explore the feasibility of ventilation without shafts, we first compare the tunnel ventilation design methods in China and the European Union. We also present the development process of emission standards, base emission rates, and design concentration values. Then, a new ventilation calculation for the BSC tunnel with reference values from the World Road Association (PIARC) is presented. The results show that the longitudinal ventilation design without shafts is feasible under normal traffic conditions when adopting values designed by PIARC under both the Chinese method and the European method. Furthermore, the influence of new energy vehicles and the necessity of ventilation rate on ventilation design are discussed. We suggest considering new energy vehicle fire situations and ignoring the ventilation rate for BSC tunnels. We hope to provide a strong reference for the ventilation design of BSC tunnels and for the improvement of relative ventilation codes in China.

The Application of UX Research in New Energy Vehicle Innovation

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Menghan TAO ◽  
Ning XIAO ◽  
Xingfu ZHAO ◽  
Wenbin LIU
Keyword(s):  
Early Stage ◽  
Rapid Expansion ◽  
The Other ◽  
Innovative Product ◽  
Stage Of Development ◽  
New Energy ◽  
New Energy Vehicle ◽  
The One ◽  
New Energy Vehicles ◽  
Degree Of Innovation

New energy vehicles(NEV) as a new thing for sustainable development, in China, on the one hand has faced the rapid expansion of the market; the other hand, for the new NEV users, the current NEVs cannot keep up with the degree of innovation. This paper demonstrates the reasons for the existence of this systematic challenge, and puts forward the method of UX research which is different from the traditional petrol vehicles research in the early stage of development, which studies from the user's essence level, to form the innovative product programs which meet the needs of users and being real attractive.

The Southern Gas Corridor infrastructure project – implications for the energy security of the European Union

2019 ◽  
Vol 17 (4) ◽  
pp. 79-99
Author(s):  
Justyna Misiągiewicz
Keyword(s):  
European Union ◽  
Soviet Union ◽  
Energy Security ◽  
Energy System ◽  
Caspian Region ◽  
The European Union ◽  
Energy Field ◽  
Eu Member States ◽  
Infrastructure Project ◽  
The Eu

Nowadays, energy security is a growing concern in state foreignpolicy. Interdependency in the energy field is a very important dimensionof contemporary relations between states and transnational corporations.Energy security is becoming a key issue for the European Union (EU). TheUnion is one of the world’s fastest-growing energy markets and the biggestimporter of energy resources. For the foreseeable future, Europe’s energydependence will probably increase. Facing a shortage of energy, Europe isdependent on imports and the EU member states need to diversify their energysupplies. The Caspian region contains some of the largest undevelopedoil and gas reserves in the world. After the collapse of the Soviet Union, thenewly independent Caspian states became open to foreign investment. Thegrowing energy needs have given the EU a strong interest in developing tieswith energy-producing states in the Caspian region to build the necessarypipeline infrastructure. In this analysis, the pipeline infrastructure that exists orwill be built in the near future will be presented. The analysis will concentrateon routes transporting gas from the Caspian region and the most importantproblems and solutions in designing the midstream energy system in the region.The key aim of the article is to analyse the Southern Gas Corridor (SGC)infrastructure project, which will inevitably contribute to the EU’s energy securityinterest.

scholarly journals Research and Implementation of New Energy Vehicle Servo Motor EMC Testing System

2021 ◽  
Vol 1846 (1) ◽  
pp. 012016
Author(s):  
Peipei Li ◽  
Qingjun Deng ◽  
Yi Zhao ◽  
Jianyu Hu ◽  
Yong Liu ◽  
...  
Keyword(s):  
Testing System ◽  
Servo Motor ◽  
New Energy ◽  
New Energy Vehicle

scholarly journals Odour, dust and non-methane volatile organic-compound emissions from tunnel-ventilated layer-chicken sheds: a case study of two farms

2013 ◽  
Vol 53 (12) ◽  
pp. 1309 ◽  
Author(s):  
Mark Dunlop ◽  
Zoran D. Ristovski ◽  
Erin Gallagher ◽  
Gavin Parcsi ◽  
Robin L. Modini ◽  
...  
Keyword(s):  
Dust Emission ◽  
Ventilation Rate ◽  
Gas Chromatography Mass Spectrometry ◽  
Emission Rates ◽  
Layer Chicken ◽  
Volatile Organic ◽  
Different Seasons ◽  
Odour Emissions ◽  
Cleaning Cycle ◽  
Study Sites

An observational study was undertaken to measure odour and dust (PM10 and PM2.5) emission rates and identify non-methane volatile organic compounds (NMVOCs) and odorants in the exhaust air from two tunnel-ventilated layer-chicken sheds that were configured with multi-tiered cages and manure belts. The study sites were located in south-eastern Queensland and the West Gippsland region of Victoria, Australia. Samples were collected in summer and winter on sequential days across the manure-belt cleaning cycle. Odour emissions ranged from 58 to 512 ou/s per 1000 birds (0.03–0.27 ou/s.kg) and dust emission rates ranged 0.014–0.184 mg/s per 1000 birds for PM10 and 0.001–0.190 mg/s per 1000 birds for PM2.5. Twenty NMVOCs were identified, including three that were also identified as odorants using thermal desorption–gas chromatography–mass spectrometry/olfactometry analysis. Odour emission rates were observed to vary with the amount of manure accumulation on the manure belts, being lowest 2–4 days after removing manure. Odour emission rates were also observed to vary with diurnal and seasonal changes in ventilation rate. Dust emissions were observed to increase with ventilation rate but not with manure accumulation. Some NMVOCs were identified at both farms and in different seasons whereas others were observed only at one farm or in one season, indicating that odorant composition was influenced by farm-specific practices and season.

scholarly journals Operational and Safety Management at Intersections: Can the Turbo-Roundabout Be an Effective Alternative to Conventional Solutions?

2021 ◽  
Vol 13 (9) ◽  
pp. 5103
Author(s):  
Vincenzo Gallelli ◽  
Giusi Perri ◽  
Rosolino Vaiana
Keyword(s):  
Traffic Congestion ◽  
Safety Management ◽  
Environmental Benefits ◽  
Assessment Model ◽  
Pollutant Emission ◽  
Emission Rates ◽  
The European Union ◽  
European Union Policy ◽  
Union Policy

The European Union policy strategies on the sustainability of the transport system pursue the goals of maximizing safety and environmental benefits and reducing the severity and frequency of crashes, congestion, and pollutant emission rates. A common issue is the planning of the most effective solution for operational and safety management at intersections. In this study, an egg turbo roundabout is proposed as the alternative solution to a conventional roundabout in Southern Italy which suffers from traffic congestion. A comparative analysis is carried out using microsimulation techniques to investigate the safety effects and operational improvements of converting a traditional priority intersection into standard roundabout or turbo roundabout layout. In particular, the VISSIM software is used to explore the most relevant operational performance measures: queue length, travel times and delays. The lowest values of these measurements are recorded for the simulated turbo roundabout, thus making this scheme more appropriate in terms of operational performances. With regard to safety analysis, the Surrogate Safety Assessment Model (SSAM) is used to collect information on the predicted number of conflicts, the probability, and severity of the potential collisions. The results suggest that, for the specific case study, the safety levels of the standard roundabout and the turbo roundabout are approximately comparable.

The Berlin Process. Bringing the Western Balkan Region Closer to the European Union

Südosteuropa ◽  
2020 ◽  
Vol 68 (1) ◽  
pp. 1-24
Author(s):  
Christina Griessler
Keyword(s):  
European Union ◽  
Eu Enlargement ◽  
The Political ◽  
The European Union ◽  
Western Balkans ◽  
Political Activities ◽  
New Energy ◽  
Western Balkan Region ◽  
Slow Progress ◽  
Proactive Measures

AbstractFor the countries of the Western Balkans, the path to membership in the European Union (EU) has been particularly tortuous. Its slow progress has created frustration among applicant countries. In 2014 Germany, stepping into the political void that had formed, inaugurated what has come to be known as the Berlin Process, an initiative aimed at injecting new energy into the dormant EU enlargement process. The author examines the political activities initiated between 2014 and 2019, analysing the official documentation of the Berlin Process along with publications such as policy papers and media commentaries. She concludes that although meaningful and proactive measures have been taken, such efforts have not been successful in persuading or enabling the Western Balkan states to implement the political and economic reforms required for EU accession.

scholarly journals System Dynamics Model for the Evolutionary Behaviour of Government Enterprises and Consumers in China’s New Energy Vehicle Market

2020 ◽  
Vol 12 (4) ◽  
pp. 1578 ◽  
Author(s):  
Hongxia Sun ◽  
Yao Wan ◽  
Huirong Lv
Keyword(s):  
System Dynamics ◽  
Motor Vehicle ◽  
Replicator Dynamics ◽  
Evolutionary Game ◽  
Practical Significance ◽  
Subsidy Policy ◽  
New Energy ◽  
New Energy Vehicle ◽  
The Impact ◽  
Vehicle Market

Exhaust pollution and energy crises are worsening worldwide. China has become the largest motor vehicle producer; thus, promoting the use of new energy vehicles (NEVs) in China has important practical significance. In this paper, considering the limited rationality of governments, NEV enterprises and consumers, we study the subsidy policy of the China NEV market using the evolutionary game and system dynamics (SD) methods. First, a tripartite evolutionary game model is developed and the replicator dynamics equations and Jacobian matrix are obtained. A SD simulation of the model was conducted to further clarify the impact of the initial market proportion and three variables used in the model. The results show that the initial market proportion affects the evolution speed but does not affect the evolution result when the three group players all choose a mixed strategy. For governments, they should not hastily cancel price subsidies provided to consumers; rather, they should dynamically adjust the rate of the subsidy decrease and increase the consumers’ extra cost for purchasing fuel vehicles (FVs). NEV enterprises should appropriately increase their investments in the research and development (R&D) of NEVs.

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