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Multiple Power Quality Supply System 1st in Japan March 31, 2008

Posted by Hans De Keulenaer in electricity, power quality, reliability, security, storage, technology.
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In this interview, Keiichi Hirose from NTT Facilities, presents the first trial to take place in Japan in the area of power quality concepts and solutions. This field demonstration of a multiple power quality supply system is leaded by NTT Facilities. It has developed and installed a multiple power quality supply system that has the capability to feed four classes of alternative current (AC) and one of direct current (DC) power while meeting various customer requirements. The system also has three types of distributed generator (DG): gas engine sets, fuel cells, and photovoltaic panels. NTT Facilities started the project in Fiscal Year (FY) 2004 and plans to continue it for four years. A review of the project’s first three years was done @EPQU’07 conference.


Industrial Heat pumps February 9, 2007

Posted by Hans De Keulenaer in efficiency, technology.
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By Bohdan Soroka, Laborelec

Industrial heat pumps, using waste process heat as the heat source, deliver heat at higher temperature for use in industrial process heating or preheating, or for space heating in industry. There is a debate over their definition, but in general they represent a worthwhile method of improving the energy efficiency of industrial processes, and/or reducing primary energy consumption.

Industrial heat pumps (IHPs) offer various opportunities to all types of manufacturing processes and operations. Increased energy efficiency is certainly the IHPs most prominent benefit, but few companies have realized the untapped potential of IHPs in solving production and environmental problems. IHPs can offer the least-cost option in getting the bottlenecks out of production process to allow greater product throughput. In fact, IHPs may be an industrial facility’s best way of significantly and cost-effectively reducing combustion-related emissions.

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Can nuclear power deliver? April 24, 2006

Posted by Hans De Keulenaer in nuclear, technology.
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'Can Nuclear Power Deliver?' has been based on literature review and expert interviews, and provides an overview of arguments in the nuclear debate:

Nuclear peril
  • Waste: technical solutions exist, but lack of a political agreement
  • Proliferation: can and needs to be managed
  • Nuclear safety: an issue for older nuclear plants, but promising 'passive safety' designs for new reactors
The nuclear promise
  • The power of the atom: a fistful of matter holding enough energy to power a city of a million for a year
  • Climate change mitigation: each major nuclear power station saves 6 million tonne of greenhouse gasses per year compared to fossil-based electricity generation
  • Energy security: abundant energy supply when using advanced reprocessing and fast neutron reactors
From peril to promise
  • Public opinion – taken hostage by extremes
  • Technology: extremely complex scientific & technical challenges need global cooperation and a 'man on the moon' momentum

Nuclear technology needs to address its problems, and holds tremendous promise if it does. The 'nuclear option' does not represent a single option, but offers many choices on building additional reactors, a moratorium ( no new reactors), phaseout (reduce existing reactors), reactor types, waste processing and R&D expenditure.

When excluding all nuclear options, a plan is needed how to build an energy system without it. The fact that we yet have to see such a (transparent) plan may relate to the fact that the numbers simply do not add up without the use of nuclear energy.

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