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New at CENER: medium teperature concentrating solar collectors test loop

April 12, 2021.- CENER has recently put in place a new infrastructure for testing medium temperature concentrating solar thermal collectors at CENER’s headquarters located in Navarre (Spain).

CENER is accredited by ENAC (Spanish National Accreditation Entity) to perform solar thermal collectors performance and durability tests according to the international standard ISO 9806:2017 – “Solar energy – Solar thermal collectors – Test methods” and is a recognized testing laboratory by most Solar Keymark certification bodies (AENOR, DINCERTCO, KIWA, CERTIF) as well as by the Solar Rating & Certification Corporation (ICC-SRCC) in USA and the Saudi Standards, Metrology and Quality Organization (SASO) in KSA.

Completing our previous capacity up to 90°C, the new test facility allows for testing concentrating solar thermal collectors up to 220°C and 25 bar with liquid water as heat transfer fluid. With a cooling power of up to 25 kW thermal performance tests can be conducted to collectors up to approximately 25 m2 of aperture area. The new test loop is fully compliant with all stability and monitoring requirements of the ISO 9806 standard. Other relevant outdoor and indoor equipment complete the standard requirements for durability tests: mechanical loads, impact resistance, maximum pressure, internal and external shock, and others.

CENER’s medium temperature concentrating solar collectors test loop is already operative and available for testing. The first collectors are already being tested and future reserves will be managed in a FIFO (first in, first out) sequence. Due to meteorological conditions, the most convenient testing dates are within March and October but the testing facilities will be operative throughout the full year. Additionally, if found more convenient, CENER is also accredited for in-situ thermal performance testing at the client’s facilities according to ISO 9806.

At present, in addition to the solar thermal collectors tests, CENER is referent in:  Calibration of field pyranometers and pyrheliometers, on-site audit of solar radiation measurement stations, performance testing and ageing of solar thermal power plant components (receiver tubes, reflectors, complete parabolic trough collectors or loops), ITR service (solar receiver tubes inspection), on-line HTF Degradation sensor and HTF analysis.

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