This report describes the work that has been done on the water calorimeter project at VSL. The calorimeter determines the absorbed-dose-to water Dw in gray, by measuring the radiation induced temperature change. The temperature of the water will change due to irradiation of a beam ionizing radiation. …

Research has been done to improve the understanding the self-heat effect, due to power dissipation, of temperature-dependant resistors in the VSL water calorimeter. A custom measurement program has been written to be able to control and read out three Agilent 3458A digital multimeters (DMMs). With these …

The way we live is not efficient. We waste, we barely recycle and the facilities we use are wasteful. The reason is the large scale in which we facilitate ourselves. This also happens in and around Arnhem and Nijmegen. The way of living in the sphere between the rivers Waal and Rhine has to alter drastically. …

There are several greenhouses built with solar panels integrated into the roof. In summer time this will operate very well, although broad shadow stripes can result in growth and yield differences. In winter the amount of sunlight is further limited by the solar panels and will result in further reduction …

A new type of greenhouse with linear Fresnel lenses in the cover performing as a concentrated photovoltaic (CPV) system is presented. The CPV system retains all direct solar radiation, while diffuse solar radiation passes through and enters into the greenhouse cultivation system. The removal of all direct …

Rioolenergie zou een duurzame toevoeging kunnen zijn op de bekende manier van elektriciteitswinning wanneer dit op een goede en rendabele wijze gewonnen kan worden. Doelstelling van deze rapportage is het inzichtelijk maken van de (on)mogelijkheden om elektriciteit op te wekken in het riool. Uit dit …

Performance results are given of a new type of greenhouse, which combines reflection of near infrared radiation (NIR) with electrical power generation using hybrid photovoltaic cell/thermal collector modules. Besides the generation of electrical and thermal energy, the reflection of the NIR will result …

In opdracht van de Stichting tot behoud van de Veluwse Sprengen en Beken is in het kader van een afstudeeropdracht dit haalbaarheidsonderzoek uitgevoerd naar het terugbrengen van een watermolen in het Renkums Beekdal. Naar aanleiding van een in 2010 uitgevoerde globale inventarisatie naar aanwezige watermolens …

This paper discusses an Induction Generator (IG) system that provides regulated voltage at any load condition. It utilizes the classical self-excitation principle but, in addition to that, it makes use of a current regulated PWM inverter to control the output voltage magnitude. It is primarily intended …