ISSN:1479-8344    

DOI:10.1049/pe:19920020

出版商:IEE    

年代:1992

数据来源: IET

摘要:

The fuel cell conference staged in Japan on the 3rd-6th February 1992 defined the state of the art developments in fuel cell technology worldwide.

ISSN:1479-8344    

DOI:10.1049/pe:19920024

出版商:IEE    

年代:1992

数据来源: IET

摘要:

Electron beam processors have advanced a long way since the early scanned beam systems associated with radiation research and radiography. 'Curtain' beam equipment is today used in a wide range of industrial processes such as printing, magnetic media manufacture and the crosslinking of plastic film and wire insulation. This first part of a two-part article describes the technology that has been developed to deliver beam currents of as much as 1000 mA at accelerating voltages of up to 300 kV. The second part, in a future issue, will discuss the diverse applications of such processors.

ISSN:1479-8344    

DOI:10.1049/pe:19920025

出版商:IEE    

年代:1992

数据来源: IET

摘要:

The ideal of a completely maintenance-free battery — the black box with two terminals — has existed in the battery industry for many years, but has only become a reality for industrial batteries within the last decade. This article explains the rationale behind the design of maintenance-free nickel-cadmium (NiCd) batteries and charts their development.

ISSN:1479-8344    

DOI:10.1049/pe:19920026

出版商:IEE    

年代:1992

数据来源: IET

摘要:

This article reflects on and questions existing approaches to maintaining and improving the reliability of power systems and reviews and highlights some alternative ways forward. It also questions the need and usefulness of present deterministic criteria and security standards and instead suggests that integrated cost benefit analyses involving customers and their decisions could be a more rewarding and applicable approach. The guiding principle throughout this article is the basic question: ‘Is it worth it?’.

ISSN:1479-8344    

DOI:10.1049/pe:19920027

出版商:IEE    

年代:1992

数据来源: IET

摘要:

This article sets out to show that the standards' impasse we are experiencing in the field of power and distribution transformers is due to the fact that standards committees are still asking the old askarel questions: ‘Is it flammable*or non-flammable?’ Instead, in the context of the possibility of fire causation by a dielectric fluid, for both practical and criteriological reasons, the question should be whether the liquid is actually capable of maintaining a transient flame and thus capable of propagating a fire. If we follow the argument that ‘non-flammable’ should be replaced by the much more relevant notion of ‘non-propagating’ — and the test results shown make it difficult not to agree — then we must set in motion the necessary procedures at IEC and CENELEC level.

ISSN:1479-8344    

DOI:10.1049/pe:19920028

出版商:IEE    

年代:1992

数据来源: IET

摘要:

A number of electroheat processes operate through the formation of an ionised state primarily in the form of a glow or an arc discharge. The principles of such devices are outlined together with some well known industrial applications.

ISSN:1479-8344    

DOI:10.1049/pe:19920031

出版商:IEE    

年代:1992

数据来源: IET