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 …

Model calculations and the few data that are available show that over 100 L water condense yearly on each square meter of a greenhouse cover. It is known that the presence of condensate reduces light transmission. This effect is suppressed to some extent by adding film-forming (anti-drop) additives to …

The objective of an energy management strategy for fuel cell hybrid propulsion systems is to minimize the fuel needed to provide the required power demand. This minimization is defined as an optimization problem. Methods such as dynamic programming numerically solve this optimization problem. Strategies …

In this paper, we will argue that developments in social media in the past few years open up an opportunity space for developing "integration software". Such software supports company specific use cases, while the software expands on existing social media infrastructure through web API's. We have explored …

Het loslaten van het concept “afval” wordt door Loesje treffend verwoord: “Waarom afval produceren als je het toch weggooit?”. Cradle to Cradle sluit hier op aan: producten moeten zodanig ontwikkeld worden dat deze na gebruik als grondstof kunnen dienen voor een nieuw product in de kringloop. De vraag …

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 …