8 research outputs found
Wireless and passive temperature indicator utilizing the large hysteresis of magnetic shape memory alloys
No full textAn ultra-low cost, wireless magnetoelastic temperature indicator is presented. It comprises a magnetostrictive amorphous ribbon, a Ni-Mn-Sn-Co magnetic shape memory alloy with a highly tunable transformation temperature, and a bias magnet. It allows to remotely detect irreversible changes due to transgressions of upper or lower temperature thresholds. Therefore, the proposed temperature indicator is particularly suitable for monitoring the temperature-controlled supply chain of, e.g., deep frozen and chilled food or pharmaceuticals
Quantifying Environmental Effects for Different Device Technologies Based on Proposed Energy Rating Standard
No full textThe most common parameter for comparison of photovoltaic (PV) modules is the output power at Standard Test Conditions (STC), which is a static set of test conditions which is reproducible under laboratory conditions but not necessarily a good indicator of operating performance in the field. Profitability of PV-systems has become more important and consequently the energy production or energy rating of modules. Therefore an easy to use energy comparator is required for industry, installers and customers. A method for the determination of module energy was proposed in the draft standard IEC 61853, which currently is under discussion. This paper investigates the importance of the different measurements suggested in the original draft on the absolute energy yield for three module technologies, thus providing a sensitivity analysis of the expected modelling accuracy.JRC.H.8-Renewable energie
