EuroSun2008-5

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 was sold to the South African Bureau of Standards (SABS) located in Pretoria, South Africa. This test facility is shown in Figure 9.

This test facility is the key component of a solar thermal test centre that was established, co­financed by the United Nations Development Program (UNDP), at the South African Bureau of Standards (SABS). The test facility shown in Figure 9 allows for testing of solar collectors and thermal solar systems according to ISO 9459-2 (CSTG-method).

Due to the installation of the above mentioned test facility the SABS is able to carry out thermal performance tests and durability tests of solar thermal systems and collectors according to the relevant standards. This is one important basis for the formal accreditation of the test laboratory according to ISO 17025.

Another test facility which allows testing of solar collectors according to EN 12975-2 (and solar thermal systems according to EN 12976 or ISO 9459-2 and ISO 9459-5 respectively is installed at the Research and Test Centre for Thermal Soar Systems (TZS) at the Institute for Thermodynamics and Thermal Engineering (ITW) at the University of Stuttgart.

Подпись: Fig. 9: The mobile, stand-alone test facility at SABS, South Africa Подпись: Fig. 10: The mobile, stand-alone test facility at Skopje, Republic of Macedonia

A further all-in-one test facility was delivered to the Hydrometeorological Service located in Skopje, Republic of Macedonia where if forms the basis for a solar thermal test and competence centre (see Figure 10)

EuroSun2008-5

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 …

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