Category: EuroSun2008-2

First simulation results for the hybridization of small solar power tower plants

S. Alexopoulos1*, J. Gottsche1, B. Hoffschmidt1, C. Rau1, P. Schwarzbozl2 1 Aachen University of Applied Sciences (AcUAS)/ Solar-Institut Julich (SIJ); Heinrich-Mufimann-Strafie 5; D-52428 Julich 2 German Aerospace Center (DLR), Institute of Technical Thermodynamics, Linder Hohe, Porz-Wahnheide, D-51147 Koln * Corresponding Author, alexopoulos@sij. fh-aachen. de Abstract Solar thermal power is an emerging technology that provides clean […]

Solar industrial process heat plants in operation

Data gathered in the framework of the IEA Task 33/IV include comprehensive information about the geographical distribution of the solar thermal plants, the industrial sectors addressed, the specific processes, the process temperatures, the solar thermal collectors technologies, the capacity installed, the type of back-up systems and some economics. This survey include the majority of the […]

Drying experiments

In order to describe the woodchip drying curves and study how the drying factors affect, a series of tests were conducted at different temperatures and velocities. Drying is the process of removal water from a product. As a thermal process, the performance of any dryer mainly depends on the construction, design parameters as well as […]

New testing facilities are needed

In the development of flat-plate collectors and vacuum tube collectors for domestic hot water and for room heating applications it was sufficient to carry out collector efficiency measurements up to collector inlet temperatures of about 100°C. But the situation is different for the development of collectors which will have their main operating temperature in the […]

Potential for future applications

In spite of the current small contribution to the worldwide installed solar thermal power, the potential for providing heat to industrial application is really relevant. Looking at this new promising market, several studies on the potential for solar industrial process heat have been recently performed in different countries such as Austria, Spain, Portugal, Italy and […]

The collector gain and the cardinal point

The optimal orientation of a collector (e. g. south, tilted according to the latitude) is often not to choose. To take into account the local conditions (roof slope, roof orientation, site orientation) it often needs a compromise. CPC vacuum tube collectors have the advantage that they can compensate an unfavourable orientation with the smallest additional […]