Measurements and Benchmark of PVT – Collectors According To EN 12975 and Development of a Standardized Measurement Procedure

Abstract

SynopsisHybrid Photovoltaic-thermal-collectors (PV-T) may have a number of advantages compared to stand-alone PV or solar-thermal-collectors. To mention one of them for example the overall efficiency of a PV-T-system is higher than the efficiency of the individual systems [1]. Recently, there have been efforts by the "European Solar Keymark Network" and also in national organizations to standardize PV-T collector measurements and make it possible to assign a "Solar Keymark". That would be a great benefit for PV-T collectors and subsidiary for a successful implementation in the market.Fraunhofer ISE runs an accredited laboratory for solar thermal components (TestLab Solar Thermal Systems) and also an accredited test centre for PV modules (TestLab PV Modules) and is able to combine both strengths to measure uncovered PV-T collectors and covered PV-T collectors properly. Based on the testing facilities for solar air-collectors, PV-T air-collectors can be tested as well. Recently even Concentrated PV-T collectors are in the process of getting characterised. By testing several PV-T collectors Fraunhofer ISE has created special know-how for measuring different PV-T collectors and developed an automated procedure for efficiency tests.In this paper, the interest in the standardization of measurements of a PV-T collector is discussed, and different measurement procedures are shown. It illustrates possible testing methods for different collectors, testing procedures and results from tests already performed.

A review of concentrated photovoltaic-thermal (CPVT) hybrid solar systems with waste heat recovery (WHR)

“…(2) Reliability and robustness research Although there are many types of research which were conducted to verify the reliability and robustness of concentrators or flat-plate PVT receivers [224,225], investigations on this field of WHR CPVT system rarely appeared in the documents. The reason for this difference is supposed to be the difficulty in developing reliable and robust CPVT receiver.…”

“…Thus, the development of other related standards is critical for the WHR CPVT systems. The standards on PVT, CSP, CPV, PV, and solar thermal systems [225,232,233] would be helpful for the initial standardization and commercialization of the WHR CPVT systems.…”

Modelling, Simulation and Experimental Study of a Hybrid Photovoltaic-Thermal Collector (PVT)

“…The types of solar technology are explained in Hofmann et al (2010) and Ramos et al (2019), where PVT types are distinguished. Thus, and taking into account applications from low to high temperature, PVT collectors can be classified as flat plate or concentration.…”

The Influence of Weather Conditions on the Optimal Setting of Photovoltaic Thermal Hybrid Solar Collectors—A Case Study

“…The available solutions can be compared based on the EN 12975 standard for assessing the performance of solar collectors-in particular, panels with the Solar Keymark certificate [61]. PVT hybrid solar collectors combine elements of thermal solar collector technology and PV modules; therefore, they have to meet the requirements of standard EN 12975 for glazed solar collectors as well as standard IEC 61215 for PV modules [62].…”