...Julian J. Krauth; Christoph Happich; Niels Algner; Rafal Broda; Andreas Kämpgen; Alexander Schnerring; Steffen Ulmer; Marc Röger The pointing calibration of a newly built heliostat field can take up to several years. The state-of-the-art method typically used is accurate but slow. A faster method...

...Kaviraj Bangarigadu; Tavish Hookoom; Yatindra Kumar Ramgolam; Nadia Foo Kune Satellite-based solar power data is becoming more and more important because of its continuous temporal and spatial availability. However, its reliability can be enhanced through quality control and calibration against...

... maintenance of the instruments is not feasible or practicable. Their primordial lower accuracy due to systematic deviations of the photodiode response can be improved significantly with a thorough calibration of each RSI against high precision sensors and application of suitable corrections on the raw data...

...Sanjay R. Arwade; Matthew A. Lackner; Mircea D. Grigoriu A Markov model for the performance of wind turbines is developed that accounts for component reliability and the effect of wind speed and turbine capacity on component reliability. The model is calibrated to the observed performance...

... paper, the DWM model is presented in a version suitable for full integration in an aeroelastic model. Calibration and validation of the different parts of the model is carried out by comparisons with actuator disk and actuator line (ACL) computations as well as with inflow measurements on a full-scale 2...

...D. J. Lekou; F. Mouzakis For load measurements conducted on current wind turbines according to technical specification IEC 61400-13 load-based as well as analytically determined calibrations are possible. The uncertainties involved in load measurements due to the employment of these two methods may...

...A. Dayan; A. Olbinsky; G. Mittelman A novel pyrheliometer, based on a solar irradiance concentration method, has been designed, constructed and calibrated. An analytical model of the instrument was developed and incorporated for the design and investigation of the instrument performance...

...M. Liu; L. Song; G. Wei; D. E. Claridge Model calibration remains a significant topic for both researchers and practitioners in the HVAC field although calibrated building and air-handling unit (AHU) models have been used for “measuring” building energy retrofit/commissioning savings, identifying...

...Jongho Yoon; E. J. Lee; D. E. Claridge Calibration of an energy simulation with actual data has generally been considered too difficult to be part of the energy audit procedure. The purpose of this paper is to develop a systematic method using a “base load analysis approach” to calibrate a building...

... and discussed. Final calibration was performed by using blackbody radiation of 1500 ° C . Two calculation methods are compared. The influence of the calibration temperature on the quality of the measurement is shown. In this first approach, the resolution of the system turned out to be in the order of magnitude...

... Division, December, 2001; final revision, August 2002. Associate Editor: A. Walker. 01 December 2001 01 August 2002 27 01 2003 sunlight atmospheric radiation atmospheric measuring apparatus atmospheric techniques photodiodes calibration Measurement of Direct...

...Sanjay Vijayaraghavan and; D. Y. Goswami Experiments in photocatalysis often involve the use of blacklight UV lamps to simulate the solar UV spectrum under indoor laboratory conditions. solar UV radiometers (such as the Eppley TUVR) which are calibrated for solar UV spectrum require correction when...

... measuring method with a water-cooled Lambertian target placed in the beam path and a CCD-camera mounted on the concentrator taking images of the brightness distribution of the focal spot. The calibration is made by calculating the total power coming from the dish and relating it to the integrated gray value...

...Daryl R. Myers; Thomas L. Stoffel; Ibrahim Reda; Stephen M. Wilcox; Afshin M. Andreas The Measurements and Instrumentation Team within the Distributed Energy Resources Center at the National Renewable Energy Laboratory, NREL, calibrates pyranometers for outdoor testing solar energy conversion...