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 …
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 …
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. …
First simulation results of a solar tower plant
Various specialized computer codes exist which are used for layout calculations and performance prediction of such solar power plant. For the solar field layout the software code WinDelsol is used, …
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 …
Principle of Membrane Distillation
The principle setup of membrane distillation (MD) is based on a hydrophobic, microporous membrane as shown in figure 1. Due to the high surface tension of the polymeric membrane materials, …
Design of Solar Plants to Heat Industrial Halls
D. Jaehnig*and W. Weiss AEE INTEC, AEE - Institute for Sustainable Technologies, Feldgasse 19, A-8200 Gleisdorf, Austria * Corresponding Author, d. jaehnig@aee. at Abstract This paper presents a method to …
Industrial heat demand by temperature range
The “ECOHEATCOOL” study [3] reports that about 30% of the total industrial heat demand is required at temperatures below 100 °C and 57% at temperatures below 400 °C. Moreover, in …
MD-Module design for solar driven desalination systems
For the design of a solar-powered desalination system, the question of energy efficiency important, since the investment costs mainly depend on the area of solar collectors to be Also, the …
Reference Buildings
The reference building has a floor area of 1000 m2 (height: 6 m). It is facing south and has a flat roof. The floor slab consists of 20 - 60 …
Industrial sectors and processes
The second noteworthy outcome of this survey is the definition of the most suitable industrial sectors, where solar thermal heat could be fruitfully used. In these sectors, the heat demand …
System design
The system design follows two different approaches. The first one is the “Compact System” for very low fresh water capacities between 100 and 500 l/day. The second one is a …
Insulation Layer Underneath the Floor Slab
All cases shown above were calculated with an insulation layer of 10 cm underneath the floor slab. However, industrial buildings are often constructed without an insulation layer underneath the floor. …
The potential for solar process heat in the European Union
The results of the potential studies for different European countries are reported in the figure and the table below. The potential solar process heat estimated in the PROMISE study for …
. Two loop system
The concept of the “two loop “system is different from the compact system and will be favourably from the economical point of view for daily capacities higher than 1000 litre. …
Collector Tilt Angle
All results presented in this paper were simulated using solar thermal collectors integrated into the south facade (collector tilt angle = 90°). Heat losses from the building can be reduced …
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 …
System Concepts for Solar Space Heating of Industrial Buildings
In most solar space heating systems applied in factory buildings, standard system concepts have been used - collectors heat a storage tank that feeds into an underfloor heating system (see …
Concept of the hybridization of solar tower plants
The receiver is operated with a variable mass flow to maintain the design hot air temperature of approx. 680°C. In operation, first the thermal storage is charged to a certain …
System Concept With Storage Tank
If the simulation results of the reference cases are plotted as a function of the utilization ratio, all simulated points almost fall onto a single line that is decreasing with …
Implementation of the model
Modern computer based simulation models have been developed and adapted to analyze the performance of solar-hybrid gas turbines in commercial system size [4]. Software tools have been developed for combined …
Concrete Floor Slab as Heat Store
Simulations were carried out for concrete slabs of 20, 40 and 60 cm thickness. However, the piping of the underfloor heating system was always installed at a depth of 10 …
Model library
The model library for the components of the steam cycle is shown in Fig. 2. This library consists of components for the steam turbine, pump, condensator, boiler, generator etc (Fig. …
Comparison of System Concepts
To compare the solar fractions that are reached with and without a conventional storage tank, the ranges of solar fractions from both nomograms are shown in a single diagram in …
Components for Hybridisation
The channel burner model assumes a complete combustion. It evaluates the fuel consumption, the output mass flow and the composition of the exhaust gas by a given mass flow of …
Solar Heat for Industrial Processes. Operating Plants and Potential for Application
R. Battisti1*, S. Drigo2 and C. Vannoni2 1 Ambiente Italia, Via Vicenza, 5/a 00185 Roma, Italy 2 University of Rome “SAPIENZA”, Department of Mechanical and Aeronautical Engineering, Via Eudossiana, 18 …
Solar potential for industrial processes
The integration of solar heat has a large potential in industrial applications, as the industrial sector covers about 28% of the total primary energy consumption for final uses in EU25. …
Model Description
In order to evaluate of the performance of the small mirror array, the MMA geometry and movement characteristics were implemented in a raytracing tool. The model includes a complete physical …
Future Work
Further testing is to be carried out, investigating wider ranges of temperatures and operating conditions. New heat exchanger relationships will be derived to better predict the effectiveness values, which will …
Characterization results of a new volumetric receiver for high-. temperature industrial process heat in a solar furnace
I. Canadas 1, D. Martinez1*, F. Tellez1, J. Rodriguez1, G. Mallol2 1 Plataforma Solar de Almeria-CIEMAT. P. O. Box 22; 04200-Tabemas; SPAIN 2 Instituto de Tecnologia Ceramica, Castellon (SPAIN) * …
Desalination with a solar-assisted heat pump: an experimental and analytical study
M N A Hawlader, Tobias Bestari Tjandra and Zakaria Mohd. Amin Dept. of Mechanical Engineering, National University of Singapore9 Engineering Drive 1Singapore 117576 Abstract The Solar Assisted Heat Pump (SAHP) …
Reached performances
A series a 39 steady-state performance points is achieved, by modifying the working conditions as indicated in the table below: Working condition Minimum value Maximum value First hot air source …
Positioning system
The positioning system can be viewed as a chain of referencing elements that starts at the sun position and ends at the collector receiver. In fixed mirror concentrators this chain …
Salt water experiments
For the salt water experiments, the same factorial design was intended to be implemented, but the results (a significant raise in conductivity, with values ranging from 40-60 pS/cm) when working …
Solar augentation of drying process
The strip dryers are operated with steam at 9 bar and have a capacity of 174 kW each. The advantage of this option is that all steam produced by the …
