Experimental data aquisition of the U-LEAF Linear Fresnel Collector of the Cyprus Institute

The file contains the experimental data for 50+ (non continuous) days of operation of the LFR at the Cyprus Institute. This is a csv file type. The data set is divided in several columns: 

Date: Year, Month, Day, Hours, Minutes, Seconds as per the aquisition time-steps of the Master PLC of the Linear Fresnel Collector

Solar position: Azimuth of the sun (Azimuth =0 at South), Elevation of the sun (0 from the horizon) calculated based on NOAA algorithm fitting the Master PLC aquisition time-steps for the location of the Linear Fresnel collector 

IAM (Incidence Angle Modifiers): calculated from ray tracing software (Tonatiuh)  based on PLC aquisition steps

DNI (Direct Normal Irradiance): as measured by the pyrheliometer (LP Pyhre 16 AC with EKO STR 21G tracker)

Weather station data: Ambient Temperature, Pressure, GHI, Humidity, Wind velocity (Davis Vantage pro 2)

Reflectometry data as measured several time per week and interpolated in between (D&S Portable Specular Reflectometer Model 15R-USB)

Absorber measurements: measured inlet, measured outlet and average calculated temperatures in the absorber as the the aquisition of the PLCs (TC MISURE E CONTROLLI PT100, Class 1/3)

Heat transfer Fluid characteristics: Cp and Density, Massflow obtained from the volumetric flow (Prowirl F200, 7F2B25, DN25 1"), Power absorbed as calculated based on the Duratherm 450 datasheet

The date is set by the aquisition by the master PLC that registers the date, the volumetric flowrate of the HTF, the inlet temperature and the outlet temperature. 

They are 4 data base merged together:

The master PLC 

The weather station

DNI

Reflectometer

The available data matches periods of time when the 4 database had data registered. Time-steps vary between 15 seconds and 30 seconds. 

For more information you can send an email to [e-mail]