原文传递
PNEUMATIC CAPSULE PIPELINE -- BASIC CONCEPT, PRACTICAL CONSIDERATIONS, AND CURRENT RESEARCH.
| 题名： | PNEUMATIC CAPSULE PIPELINE -- BASIC CONCEPT, PRACTICAL CONSIDERATIONS, AND CURRENT RESEARCH. |
| 作者： | Liu-H |
| 关键词： | Automation-; Capsule-pipelines; Electromagnetic-pumps; Freight-transportation; Japan-; Pneumatic-capsule-pipeline; Reliability-; Research-; Throughput-Freight-capacity; Tube-freight; Unit-costs; United-States; University-of-Missouri,-Columbia |
| 摘要： | Pneumatic capsule pipeline (PCP) uses air blown through a pipeline to propel capsules (wheeled vehicles carrying cargoes) through the pipeline. It is a modern and large version of the century-old technology of "tube transport" used rather widely and successfully in the first half of the 20th century in major European and U.S. cities for transporting mail, parcels, telegraphs, documents, cash, and other lightweight materials. Modern PCP systems, such as those used in Japan for transporting limestone to a cement plant, use large wheeled capsules moving heavy cargoes through pipes of 3-ft (0.9-m) diameter, approximately. Each capsule can carry almost two tons (1.8 Mg) of cargo. The system is driven by blowers located near the beginning of the pipeline, and it is highly automated (by computers and programmable logic controllers). The system is being used very successfully in Japan, with a high reliability record. Yet, only limited use exists today due to its high unit freight transportation cost in dollars/ton as compared to that by truck. The unit cost is high due to low system throughput (freight capacity). Major improvement in throughput can be made by replacing the pumping mechanism from blowers (which are used currently), to electromagnetic pumps (for future systems), and using off-line loading/unloading. Research in such improvements of PCP is currently underway at the Capsule Pipeline Research Center at the University of Missouri-Columbia. |
| 总页数： | Conference Title: Mid-Continent Transportation Symposium 2000. Location: Ames, Iowa. Sponsored by: Iowa State University |
| 报告类型： | 科技报告 |
相关文献
- Overview of NASA's Air Traffic Management - eXploration (ATM-X) Project.
- Accessibility Measures: Formulation Considerations and Current Applications; Research rept. Sep 99-Aug 00
- Synthesis of the "State-of-the-Practice for Advancing Planning and Operations Integration Opportunities within Transportation Agencies", Summary.
- System Oriented Runway Management: A Research Update.
- ACCELERATED LOW WATER CORROSION - A PRACTITIONER’S PERSPECTIVE
- Synthesis of the "State-of-the-Practice for Advancing Planning and Operations Integration Opportunities within Transportation Agencies", Summary.
检索历史
应用推荐
