scholarly journals Research on Multi-Period Hydrogen Refueling Station Location Model in Jiading District

2021 ◽  
Vol 12 (3) ◽  
pp. 146
Author(s):  
Qianhui Zheng ◽  
Hong Lv ◽  
Wei Zhou ◽  
Cunman Zhang
Keyword(s):  
Fuel Cell ◽  
Location Model ◽  
Set Covering ◽  
Passenger Cars ◽  
Promoting Effect ◽  
Growth Trend ◽  
Weighting Method ◽  
Covering Model ◽  
Planning And Construction ◽  
Station Location

The construction of hydrogen refueling stations is an important part of the promotion of fuel cell vehicles. In this paper, a multi-period hydrogen refueling station location model is presented that can be applied to the planning and construction of hydrogen infrastructures. Based on the hydrogen demand of fuel cell passenger cars and commercial vehicles, the model calculates the hydrogen demand of each zone by a weighting method according to population, economic level and education level. Then, the hydrogen demand of each period is calculated using the generalized Bass diffusion model. Finally, the set covering model is improved to determine the locations of the stations. The new model is applied to the scientific planning of hydrogen refueling stations in Jiading District, Shanghai; the construction location and sequence of hydrogen refueling stations in each period are given, and the growth trend of hydrogen demand and the promoting effect of hydrogen refueling stations are analyzed. The model adopted in this model is then compared with the other two kinds of node-based hydrogen refueling station location models that have previously been proposed.

scholarly journals Hydrogen Mobility Europe (H2ME): Vehicle and Hydrogen Refuelling Station Deployment Results

2018 ◽  
Vol 9 (1) ◽  
pp. 2 ◽  
Author(s):  
Peter Speers
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Electric Vehicles ◽  
First Year ◽  
Passenger Cars ◽  
Passenger Car ◽  
Cell Range ◽  
Fuel Cell Electric Vehicles ◽  
Light Vehicle

Hydrogen Mobility Europe (H2ME, 2015–2022) is the largest European Fuel Cells and Hydrogen Joint Undertaking (EU FCH JU)-funded hydrogen light vehicle and infrastructure demonstration. Up until April 2017, the 40 Daimler passenger car fuel cell electric vehicles (FCEVs) and 62 Symbio Fuel Cell-Range Extended Electric Vans (FC-REEV)-vans deployed by the project drove 625,300 km and consumed a total of 7900 kg of hydrogen with no safety incidents. During its first year of operation (to April 2017), the NEL Hydrogen Fueling HRS (hydrogen refuelling station) in Kolding, Denmark dispensed 900 kg of hydrogen, and demonstrated excellent reliability (98.2% availability) with no safety incidents. The average hydrogen refuelling time for passenger cars is comparable to that for conventional vehicles (2–3 min).

scholarly journals Set Covering Model in Solving Multiple Cutting Stock Problem

2020 ◽  
Vol 5 (4) ◽  
pp. 121
Author(s):  
Sisca Octarina ◽  
Devi Gusmalia Juita ◽  
Ning Eliyati ◽  
Putra Bahtera Jaya Bangun
Keyword(s):  
Column Generation ◽  
Pattern Generation ◽  
Cutting Stock Problem ◽  
Set Covering ◽  
Cutting Stock ◽  
Second Stage ◽  
Generation Technique ◽  
Cutting Pattern ◽  
Covering Model

Cutting Stock Problem (CSP) is the determination of how to cut stocks into items with certain cutting rules. A diverse set of stocks is called multiple stock CSP. This study used Pattern Generation (PG) algorithm to determine cutting pattern, then formulated it into a Gilmore and Gomory model and solved by using Column Generation Technique (CGT). Set Covering model was generated from Gilmore and Gomory model. Based on the results, selected cutting patterns in the first stage can be used in the second stage. The combination of patterns generated from Gilmore and Gomory model showed that the use of stocks was more effective than Set Covering model.  

The Current Status of Hydrogen and Fuel Cell Development in China

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
Mingruo Hu
Keyword(s):  
Fuel Cell ◽  
Electric Vehicles ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Fuel Cell Vehicle ◽  
Current Status ◽  
Chinese Government ◽  
Passenger Cars ◽  
Cell Technology ◽  
Fuel Cell Technology

Abstract Potentially large amount of hydrogen resource in China could theoretically supply 100 × 106 fuel cell passenger cars yearly. The Chinese government highly values the hydrogen and fuel cell technology. Policies and plans have been put forward densely in the recent five years. Numerous companies, research institutes, and universities are developing proton exchange membrane fuel cell (PEMFC) and solid oxide fuel cell (SOFC)-related technologies. A preliminary local supplier chain of fuel cell-related technology has been formed. However, the lifetime is still a key issue for the fuel cell technology. More than 3500 fuel cell range extender electric vehicles were manufactured during 2016 and 2018, and at the beginning of 2019, there have been more than 40 hydrogen refueling stations including both under operation and under construction. It is estimated the number of fuel cell-based electric vehicles will reach 36,000 by the end of 2020; therefore, lack of hydrogen refueling station has become a key restriction for development of the fuel cell vehicle industry.

scholarly journals Sustainable Location Selection of Data Centers: Developing a Multi-Criteria Set-Covering Decision-Making Methodology

2020 ◽  
Vol 19 (03) ◽  
pp. 741-773
Author(s):  
Siamak Kheybari ◽  
Mansoor Davoodi Monfared ◽  
Hadis Farazmand ◽  
Jafar Rezaei
Keyword(s):  
Data Center ◽  
Data Centers ◽  
Social Economic ◽  
Set Covering ◽  
Online Questionnaire ◽  
Location Selection ◽  
Sustainability Criteria ◽  
Proposed Model ◽  
Covering Model ◽  
Selection Of

In this paper, a multi-criteria set-covering methodology is proposed to select suitable locations for a set of data centers. First, a framework of criteria, with social, economic and environmental dimensions, is presented. The framework is used to calculate the suitability of potential data center locations in Iran. To that end, a sample of specialists in Iran was asked to take part in an online questionnaire, based on best–worst method (BWM), to determine the weight of the criteria included in the proposed framework, after which a number of potential locations are evaluated on the basis of the criteria. The proposed model is evaluated under a number of settings. Using the proposed multi-criteria set-covering model, not only the utility of candidate places is evaluated by sustainability criteria but also all service applicants are covered by at least one data center with a specific coverage radius.

scholarly journals Two-Stage Covering Location Model for Air–Ground Medical Rescue System

2019 ◽  
Vol 11 (12) ◽  
pp. 3242 ◽  
Author(s):  
Ming Zhang ◽  
Yu Zhang ◽  
Zhifeng Qiu ◽  
Hanlin Wu
Keyword(s):  
Large Scale ◽  
Facility Location Problem ◽  
Construction Cost ◽  
Location Model ◽  
Set Covering ◽  
Two Stage ◽  
Emergency Medical ◽  
Rescue System ◽  
Rescue Time ◽  
Ground Ambulances

This study tackled the multimodal facility location problem in emergency medical rescue. First, an intermodal setting was suggested, i.e., considering cooperation between ground ambulances and helicopters in emergency medical rescues. Specifically, four scheduling modes were structured: air only, ground only, air-ground combined mode if landing and take-off site for helicopters near the wounded is available, and air-ground transshipment if the landing and take-off site for helicopters near the wounded is not available. Second, a two-stage covering location model was proposed. In the first stage, a set-covering model was developed to achieve maximum coverage and minimal total construction cost of emergency rescue facilities. The optimal mixed allocation proportion of helicopters and ground ambulances was then obtained to guarantee cohesion between the hierarchical models and covering characteristics and the economic efficiency of location results. In the second stage, for given emergency locations, an emergency scheduling mode matrix was constructed for meeting response time and total rescue time constraints. The proposed model obtains optimal results in terms of coverage, construction cost, and rescue time. A case study of Beijing, China validated the feasibility and efficiency of the two-stage covering location model for multimodal emergency medical rescue network. The proposed air-ground rescue system and two-stage covering location model can be extended and also used for large-scale disaster rescue management.

scholarly journals Hybrid Set Covering and Dynamic Modular Covering Location Problem: Application to an Emergency Humanitarian Logistics Problem

2020 ◽  
Vol 10 (20) ◽  
pp. 7110 ◽  
Author(s):  
Roghayyeh Alizadeh ◽  
Tatsushi Nishi
Keyword(s):  
Location Problem ◽  
Set Covering ◽  
Strategic Decisions ◽  
Maximal Covering ◽  
Planning Decisions ◽  
Tactical Decisions ◽  
Covering Model ◽  
Validation Tests ◽  
Capacitated Facilities

This paper presents an extension of the covering location problem as a hybrid covering model that utilizes the set covering and maximal covering location problems. The developed model is a multi-period model that considers strategic and tactical planning decisions. Hybrid covering location problem (HCLP) determines the location of the capacitated facilities by using dynamic set covering location problem as strategic decisions and assigns the constructive units of facilities and allocates the demand points by using dynamic modular capacitated maximal covering location problem as tactical decisions. One of the applications of the proposed model is locating first aid centers in humanitarian logistic services that have been addressed by studying a threat case study in Japan. In addition to validating the developed model, it has been compared to other possible combined problems, and several randomly generated examples have been solved. The results of the case study and model validation tests approve that the main hybrid developed model (HCLP) is capable of providing better coverage percentage compared to conventional covering models and other hybrid variants.

Multi-Objective Location Model Research and Application in the City Emergency Logistics Based on Different Product Materials

2011 ◽  
Vol 63-64 ◽  
pp. 277-280 ◽  
Author(s):  
Hong Zhi Liu ◽  
Li Na Liu
Keyword(s):  
Parametric Programming ◽  
Location Model ◽  
Programming Method ◽  
Logistics Center ◽  
Multi Objective ◽  
Emergency Logistics ◽  
Model Research ◽  
Covering Model ◽  
The Cost ◽  
Limited Demand

We build up a multi-objective location model of emergency logistics center location, The model combined the construction cost of emergency logistics center with the point of shortest distance from the emergency needs of the logistics center to the limited demand, so that meet the different deployment strategies. We get satisfactory results in the practical by using parametric programming method for solving multi-objective model and verifying for the analysis of examples of this multi-objective decision. The model take into account the cost, efficiency and fairness, combined with the traditional model of coverage (covering model, gravity model and the P-median model).To meet the city's emergency different deployment strategy, the multi-objective location model solve and verify by the parametric programming method and some examples.

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