webcasts

This new webcast, prepared by Laborelec for Leonardo ENERGY, discusses the basic principles of artificial lighting, light sources and armatures in relation to energy efficiency in lighting systems.

View webcast (14 minutes)

RETScreen International is a unique decision support tool developed with the contribution of numerous experts from government, industry, and academia. Over the coming months, Leonardo ENERGY will be publishing a series of webcasts on energy project analysis using RETScreen.

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	RETScreen 4: Overview and Introduction  RETScreen 4, the latest edition of the RETScreen software, helps evaluate whether or not a proposed clean energy project makes sense and is worth further consideration. This presentation introduces RETScreen 4, highlights its new features and describes the RETScreen approach to project analysis. View webcast (32 minutes) En français
	Energy Efficiency This module introduces the energy efficiency project capabilities of RET Screen 4. View webcast (26 minutes) En français
	Passive Solar Heating Project Analysis This module discusses the heating of buildings using the solar gains available through high-performance windows. View webcast (32 minutes) En français
	Ground-Source Heat Pump Project Analysis This module discusses systems that provide heat by extracting it from the ground or a body of water and provide cooling by reversing this process. Such systems are also known as geothermal heat pumps, earth energy systems or GeoExchange systems. View webcast (43 minutes) En français
	Solar Water Heating Project Analysis This module discusses systems that use solar energy to heat water. View webcast (32 minutes) En français
	Solar Air Heating Project Analysis This module discusses systems that use solar energy to heat air. View webcast (30 minutes) En français
	Biomass Energy Project Analysis This module discusses the controlled combustion of biomass to provide heat. View webcast (35 minutes) En français
	Combined Heat and Power Project Analysis This webcast examines the use of combined heat and power systems. View webcast (22 minutes) En français
	Photovoltaic Project Analysis This module discusses the operation and application of photovoltaic energy systems, such as the one located on the roof of the National Research Laboratory in Varennes, Quebec, Canada. View webcast (45 minutes) En français
	Small Hydro Project Analysis This module has three objectives. These are first, to review the basics of small hydro systems; second, to illustrate key considerations in small hydro project analysis; and third, to introduce the RETScreen Small Hydro Project Model. View webcast (45 minutes) En français
	Wind Energy Project Analysis This module introduces wind energy project analysis. It has three objectives. These are first, to review the basics of wind energy systems; second, to illustrate key considerations in wind energy project analysis; and third, to introduce the RETScreen Wind Energy Project Model. View webcast (35 minutes) En français

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This webcast is the first in an ongoing series on busbars by David Chapman of Leonardo ENERGY. It discusses the design of busbar systems, including the choice of material, how to size busbars for a particular current rating and how to optimise the lifetime costs.

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In the third and final part of this series retrofit energy saving devices, Bill Howe from EPRI introduces a case study evaluating the energy saving potential of a transient voltage surge suppression device.

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This webcast, prepared by Fernando Nuño of Leonardo ENERGY, offers an introductory overview of photovoltaic technology, different systems and market figures.

This webcast, prepared by David Chapman of Leonardo ENERGY, explains the need for Harmonic Regulation, such as the UK Recommendation G5/4, and the concept of compatibility on which it is based.

(click image to view webcast - 18 minutes)

In part 2 of this 3 part series, a 4-step procedure is presented that you could use for evaluating retrofit energy saving devices. Whether you're a consultant, purchaser or a third party looking at these technologies, this method can be useful. The methodology has been developed based on the author's personal experience looking at these devices in the lab and in the field, while comparing them with vendor claims.

Although applied here to retrofit energy saving devices, the method could be used be used to evaluate other technology applications, for example in the fields of energy efficiency, power quality or productivity improvements.

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In this first webcast, of a series of 3, Bill Howe, Program Manager Power Quality with EPRI introduces the concept of retrofit energy saving devices, their definition, what claims they make and what technologies they use.

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In this introductory webinar, David Chapman from Leonardo ENERGY introduces the subject of harmonics. What do harmonic waveforms look like, and what kind of loads produce them? What typical harmonic profiles can be expected, what problems do they cause, and what mitigation measures can you use? All this in less than 15 minutes. Get up to speed now.

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This new webcast introduces the subject of distributed generation.

Distributed Generation (DG) and Renewable Energy Sources (RES) have attracted a lot of attention in Europe. Both are considered to be important in increasing the security of energy supplies by decreasing the dependency on imported fossil fuels and in reducing the emissions of greenhouse gases. Distributed generation refers to the local generation of electricity and (in the case of a cogeneration system) heat for industrial processes or space heating, etc. The economics of DG and RES depend on many factors. The main cost items are the initial investments, fuel prices, energy prices (electricity and heat) and the cost of connecting to the grid. Biomass options generally give the lowest cost electricity of all RES-based options. On-shore wind and hydro capacity come second. The most expensive option is solar cells. However, many countries have stimulation measures for renewable systems, including solar cells. The viability of DG and RES depends largely on regulations and stimulation measures. This is a matter of EU and national policies. A stable political course with regard to stimulation measures for DG and RES is necessary to encourage serious investment by market parties in additional DG and RES capacity.

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This webcast describes a number of considerations about for our energy systems when passive houses become the construction technology of choice in the future.

Reducing the energy consumption of houses fits very well with the first and most important step of the Trias Energetica strategy towards a sustainable energy system. However, this strategy will seriously influence the design of energy grids in the residential area. It will have both a technical and economical impact that can not be neglected. The energy standards for passive houses are at such a level that it is not economically viable anymore to invest in more than one energy infrastructure in a residential area. Although technically this could be a natural gas or hydrogen infrastructure, the choice for an all-electric infrastructure is more obvious. The traditional passive electricity distribution grid will gradually change into an active network with prosumers (both producers and consumers) of electricity instead of just consumers. Local balancing of electricity consumption and production, electricity storage and demand side management will become more and more important.

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By Peter Hanselaer, KaHo St Lieven

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Nowadays, LEDs have become very popular light sources in decorative applications. The breakthrough of LEDs in general lighting is subject of discussion between believers and non-believers.

In order to evaluate the possibilities of these light sources properly, a full understanding of this technology is required. Elementary solid state physics and the relationship with basic characteristics (current, voltage) are briefly explained. Optical characteristics are discussed. Thermal and electrical characteristics are illustrated with results obtained in the laboratory. The generation of white light is an important topic. Finally some obstacles for a quick breakthrough in general lighting are identified.

By Kurt Schipman, ABB Power Quality Products

(40 minutes)

This webcast reviews typical problems that may be caused due to the presence of harmonics in an electrical network dd. 2006. Possible solutions are reviewed. Modern active filter technology present in the field is explained and field test results from this equipment are presented. It is shown that active filter technology can be used to tackle a variety of Power Quality problems and their use results in a more efficient exploitation of the electrical installations.

Covering 10 themes, 23 Leonardo ENERGY webcasts currently provide extensive training on sustainable energy subjects.

1. Distributed Generation and Renewables

• Introduction to distributed generation (18 minutes)
  Rob van Gerwen (KEMA)
• Photovoltaic Systems (11 minutes)
  Fernando Nuño (Leonardo ENERGY)
• Energy Project Analysis with RETScreen (various webcasts)
• Wind Energy (17 minutes)
  Ton van der Wekken and Fred Wien (KEMA)

• Introduction to harmonics - part 1: Basics (58 min)
  Stefan Fassbinder (Leonardo ENERGY)
• Introduction to harmonics - part 2: Standards (36 min)
  Stefan Fassbinder (Leonardo ENERGY)
• Introduction to harmonics - part 3: Case studies
  Stefan Fassbinder (Leonardo ENERGY)
• Active filter technology review and field experience
  Kurt Schipman (ABB Power Quality Products)
• Harmonic Regulation and Compatibility (7 min)
  David Chapman (Leonardo ENERGY)
• Harmonics in LV Installations
  David Chapman (Leonardo ENERGY)

3.Secure power

• UPS topologies & standards (30 min)
  Jean-Francois Christin (MGE UPS Systems)

4.Voltage disturbances

• Voltage dips (18 min)
  David Chapman (Leonardo ENERGY)
• Voltage dip mitigation (16 min)
  Marcel Didden (Laborelec)

5.Transformers

• Total cost of ownership of transformers (36 min)
  Walter Hulshorst (KEMA Consulting)
• Design, selection and operation of distribution transformers (49 min)
  Stefan Fassbinder (European Copper Institute)
• Rating of transformers supplying harmonic-rich loads (16 min)
  David Chapman (Leonardo ENERGY)

6.EMC & Earthing

• Functional earthing of electronic devices (19 min)
  Angelo Baggini (University of Bergamo)

7.Measurement

• Uncommon and unexpected metering errors - part 1
  Stefan Fassbinder (Leonardo ENERGY)
• Uncommon and unexpected metering errors - part 2
  Stefan Fassbinder (Leonardo ENERGY)

8.Home of the Future

• Passsive Houses
  Erwin Mlecnik (Passiefhuis Platform)
• LEDs and General Lighting
  Peter Hanselaer (KaHo St Lieven)
• The Passive House in the Electricity System of the Future (14 min)
  Hans De Keulenaer (Leonardo ENERGY)

9.Strategies for Evaluating Retrofit Energy Saving Devices

• Part 1 (14 minutes)
  Bill Howe (EPRI)
• Part 2 (18 minutes)
  Bill Howe (EPRI)
• Part 3 (16 minutes)
  Bill Howe (EPRI)

10. Energy Efficiency

• Busbar Design Basics (15 minutes)
  David Chapman (Leonardo ENERGY)
• Energy Efficiency in Lighting (14 minutes)
  Rob van Heur (Laborelec)

In this webcast, Erwin Mlecnik from the Belgian Passive House Platform introduces the subject. Passive Houses reduce final demand for heat by a factor 10, and total energy consumption by a factor 6. They represent one of the largest and most promising concepts to contribute significantly to sustainable energy. The webcast defines the Passive House concept, and introduces its principles. A few practical examples are given, and references to further information are introduced.

View webcast (11 minutes)
(Courtesy PHP vzw)

In this webcast, offered by Walter Hulshorst from KEMA Consulting, the concept of total cost of ownership (TCO) of distribution transformers is introduced, and tools are presented how to optimise TCO. The subject of extra losses in transformers due to harmonic currents is covered. Finally, a software tool 'Traloss' is introduced to support TCO evaluations.

View webcast (36 minutes)

To test your knowledge on the subject, either before or after viewing the webcast, take our quiz on this subject.