Solar thermal electric plants - Part 3-1: Systems and components - General requirements for the desi...
IEC 62862-3-1:2022 specifies the general requirements for the design of parabolic-trough solar thermal power plants. It includes requirements for the electric power system, solar resource assessment, site selection, overall planning, collector system, heat transfer system, thermal energy storage system, steam generation system, steam turbine system, layout of solar field, layout of power block,…
Electronic displays - Part 3-7: Evaluation of optical performance - Tone characteristics
IEC 62977-3-7:2022(E) specifies the standard measurement and evaluation of optical performance for grey and colour tone reproduction of electronic displays under darkroom conditions. This document describes the measuring methods and evaluation of tone rendering of neutral grey, primary and secondary input colours. This document applies to displays with unbounded input signals.
Laser displays - Part 5-7: Measuring methods of image quality affected by speckle for scanning laser...
IEC 62906-5-7:2022 specifies the standard measurement conditions and methods for determining the quality of images projected by a scanning laser display on a visible light fluorescence-free screen, when observed as being affected by speckle noise due to laser coherence.
Affichages laser - Partie 5-7: Méthodes de mesure de la qualité d’image affectée par la tacheture po...
L’IEC 62906-5-7:2022 spécifie les conditions de mesure normalisées et les méthodes pour déterminer la qualité des images projetées par un affichage laser à balayage sur un écran de lumière visible libre de toute fluorescence, les images observées étant affectées par le bruit de tacheture dû à la cohérence du laser.
Household and similar electrical appliances - Test code for the determination of airborne acoustical...
IEC 60704-2-18:2022 applies to single-unit electric water heaters for household and similar use intended for placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop or under a sink, for wall-mounting or on a counter.
This document does not apply to:
– combustion water heaters;
– water kettles;
– heat pump water heaters;
– conventional electric…
