Automatic Control System
The whole automation system is mainly divided into two parts: one part is the hardware equipments consisted of all kinds of devices used in the testing system; the other part …
The application of the regulations minimal solar collector area
Following the new regulations, a three bedrooms autonomous zone must have a minimal collector area of 4 m2 independently of the climate zone were is located. From the simulations results …
Measured sequences used for validation purposes
The comparison of experimental and calculated instantaneous power results, obtained after the different approaches presented in the previous section, is based on instantaneous efficiency measurements for a CPC collector (C …
Fault diagnostic method for a water heating system based on. continuous model assessment and adaptation
Sylvain Lalot[1]*, Soteris Kalogirou[2], Bernard Desmet1, and Georgios Florides2 1LME, Universite de Valenciennes et du Hainaut Cambresis, Le Mont Houy, 59313 Valenciennes Cedex 9, France 2Cyprus University of Technology, P. …
A Long Term Test of Differently Designed Evacuated Tubular Collectors
J. Fan*, J. Dragsted, S. Furbo Department of Civil Engineering, Technical University of Denmark, Brovej 118, DK 2800, Kgs. Lyngby, DenmarkCorresponding Author, iif@byg. dtu. dkAbstract During three years seven differently …
Set up of the test facility
One aim of the newly developed all-in-one test facility is to combine all three test methods in a single test facility. This test facility must be able to fulfil all …
Options of HVAC and DHW equipments
Since the energy label in Portugal is based on an evaluation of primary energy, equipments for ambient heating, ambient cooling and production of domestic hot water have, besides the envelope …
Current status of Solar Keymark Certification
At present (summer 2008) approximately 430 different types of solar collectors and nearly 40 factory made systems are Solar Keymark certified. It is expected that two third of all solar …
Optical Concentration by Primary Mirror Field and Secondary Concentrator
The concentrator optics of the LFC consists of the mirror field of elastically bent primary mirrors having a focal length - depending on the actual collector - of several meter, …
Overview of Monitoring and Failure Detection Approaches for Solar Thermal Systems
A. C. de Keizer, K. Vajen and U. Jordan Kassel University, Institute of Thermal Engineering, 34125 Kassel, Germany, www. solar. uni-kassel. de Corresponding Author, solar@uni-kassel. de Abstract Continuous monitoring and …
Flexibility of the new testing facility for air-collectors
The components and measurement devices of an air-collector testing loop are more voluminous than for water-collectors. This simple fact causes additional difficulties when a solar collector testing loop is installed …
Hardware Structure
There are obvious advantages that the instrument based on PXI technology possesses a high speed, a small size and easy expansion, so the hardware structure will use PXI bus technology …
The Solar Keymark Testing for Factory Made Systems by. Means of an Extrapolation Procedure
H. Kerskes*, B. Mette, H. Drtick, H. Mtiller-Steinhagen Institute for Thermodynamics and Thermal Engineering (ITW), University of Stuttgart, Pfaffenwaldring 6, 70550 Stuttgart, GermanyTel.:++49-711-685-63534 Corresponding Author: kerskes@itw. uni-stuttgart. deAbstract System tests …
Efficiency test results
The collector was tested according to both steady state test (EN 12975-2;section 6.1) and dynamic test (EN 12975-2; section 6.3) methods. The corresponding characteristic parameters are presented in Table 1. …
Description of the water heating system
The solar system considered in this work is a large hot water production system suitable for a small hotel, blocks of flats, offices or similar applications. Although the FDS system …
Thermal performance during the day
The power of the collectors during the day is studied to investigate the transient thermal performance of the ETCs. Figure 2 shows the collector power in an autumn day. In …
Durability and reliability testing
In addition to the equipment required for thermal performance testing, the test facility is delivered with the complete equipment required for durability and reliability testing of solar thermal collectors according …
Results for the base-cases and envelope changes needed to ensure compliance
The first stage of the calculations was to compute the main evaluation indexes (Nic, Nvc, Nac and Ntc) for the buildings with their base-case envelope, as described in section 2. …
Ten Year Study of a Novel ICPC Solar Collector Installation: Optical Modeling and Material Degradation
William S. Duff* and Jirachote Daosukho Department of Mechanical Engineering, Colorado State University, Ft. Collins CO 80523* Corresponding Author, bill@engr. colostate. edu Abstract A novel integral compound parabolic concentrator evacuated …
Comparison with Parabolic Trough Collector
Based on the project results Fraunhofer ISE together with the partners DLR and PSE performed a technology comparison between Linear Fresnel-Collector (LFC) and Parabolic Trough (PT) for a 50 MW …
Multi-Criteria Analysis
In this paper a partial multi-criteria analysis (MCA) is used to evaluate and compare methods that can be used for detection and identification of failures or malfunctions during the operation …
Design, manufacturing and installation of a combined indoor and. outdoor test stand for solar thermal collectors for the Centre for Solar
Energy Studies (CSES) in Libya Christian Zahler1*, Stephan Scherer1, Frank Luginsland1, Andreas Haberle1 Hans-Dieter Wegmann2Ulrich Fritzsche3, Michael Adrian3Matthias Rommel4, Joachim Koschikowski4 1PSE AG, Emmy-Noether-Str.2, D-79110 Freiburg, T +49 761 479 …
Software Design
This program was developed on Labview platform. Labview operating system is the most representative system in the field of graphical programming development platform using virtual instruments. And it is also …
The solar keymark system test procedure
In addition to the performance characterisation in the European standard EN 12976-1 many requirements are set up regarding safety, reliability and durability of thermal solar systems. Their objective is to …
Power calculations after efficiency test results
Figures 2a) and 2b) illustrate, for both measurement periods, measured (Qmeas) and calculated instantaneous power values, after both steady-state efficiency parameters (uncorrected - Qss - and corrected - Qss corr …
Description of the fault diagnostic method
Figure 2 shows the overall procedure used in this work, and each block is described hereafter. But before the description of the method, it is necessary to show that neural …
Heat pipe ETCs
The thermal performances of four heat pipe ETCs are measured. They are ETC 1, 2, 3 and 4. ETC 1 and 2 have 8 tubes of tube diameter 100 mm. …
Experiences gained to-date
Up to now (August 2008) three mobile test facilities have been completed. The test facilities were delivery by SWT as complete, ready to use turn-key products. One of the facilities …
Changes to achieve class A+
The results of table 9 show that, with a proper selection of energy supply equipments and vectors, it is possible to fulfil the regulation and to achieve class A in …
ICPC Performance Testing at Sandia
Prior to the start of the 1998 Sacramento demonstration, individual fourteen tube modules were tested on Sandia National Laboratory’s two-axis tracking (AZTRAK) platform. See Winston et al [3]. These tests …
The implementation of the regulations on Solar collectors in Buildings
Maria Isabel Abreu1* and Rui Oliveira2 1 Polytechnic Institute of Bragan^a, Campus de Sta Apolonia, Apartado 1134, 5301-875 Bragan^a, Portugal* Corresponding Author, isabreu@ipb. pt Abstract The use of solar energy …
Criteria to Analyse Performance (Step 3)
The criteria are used to measure the performance of the different failure detection approaches. The selection is very important, since the result will be different, if not all relevant criteria …
Indoor / Outdoor Test Stand for Solar Thermal Collectors
The idea is to mount a tracker, the thermostat and the complete data acquisition equipment on a carriage on tracks, which allows the collectors on the testing surface to be …
Determination of Daily System Performance
As for determination of daily system performance, the system shall be allowed to operate for 12 h, from 6 h before solar noon until 6 h after solar noon. At …
Procedure for extrapolating performance test results
The aim was to develop a procedure with which it is possible to extrapolate the performance test results obtained by the test of only one system to other systems of …
