Category: EuroSun2008-2

Integration of Solar Heating System

Although breweries show a high heat demand at a low temperature level, it is relatively difficult to estimate in the first instance, if a solar heating system can be reasonable integrated into the existing processes. This is based on the diversity and complexity of the brewing process, as explained before. The basis for this decision […]

Analysis and discussion Thermal Results

The evaluation of the hygrothermal behavior of the chamber was carried out together with agronomic trials during winter. The heated beds and the pipes in contact with the grafted area contributed to raise the temperature inside the chamber. Fig. 3 shows three consecutive days measuring: it can be observed how the chamber reaches maximum temperatures […]

Validation of the library components

The validation of the models is necessary to ensure that the calculated results are valid. Furthermore it is to proof what differences consist due to the assumptions made in the models. The different components were validated mainly with calculation results of other software. The comparisons showed good agreement of the new models with the references […]

Preheating circuits decrease the efficiency factor of the system

Every kind of preheating has a negative effect on the total efficiency factor of the boiler or the power plant respectively. This is especially evident with condensing boiler technology because return-flow temperatures increased by solar energy reduce or block condensing boiler technology. However, also with every other back-up heating the total efficiency factor is decreased […]

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 […]

Experimental Investigations On Solar Driven Desalination Systems Using Membrane Distillation

J. Koschikowski*, M. Wieghaus*, M. Rommel*, Vicente Subiela Ortin**, Baltasar Penate Suarez**, Juana Rosa Betancort Rodriguez** * Fraunhofer Institute for Solar Energy Systems ISEHeidenhofstr.2,79110 Freiburg, GermanyTel +49-761-4588-5294Fax +49-761-4588-9000email ioako@ise. fhg. de ** INSTITUTO TECNOLOGICO DE CANARIAS, S. A. Playa de Pozo Izquierdo, s/n35119 – Santa Lucia, Las PalmasTel: +34 928 727511 Fax: +34 928 727517email: […]

Easy retrofitting of process heat plants by solar boilers and direct heat input

Rolf Meissner*, Stefan Abrecht Paradigma Energie – und Umwelttechnik GmbH & Co. KG, department large-scale thermal-solar systems, Ettlinger Str. 30, 76307 Karlsbad, Germany Corresponding author: r. meissner@paradigma. deAbstracts The results of nearly 20 years of Paradigma research, development as well as the practical experience with more than 30.000 already realized solar systems according to the […]