Evaluation of the tracking accuracy of parabolic-trough collectors in a solar plant for district heating

Abstract

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On-site parabolic-trough collector characterization in solar district heating plant under quasi-dynamic conditions

“…The collectors studied in this work are the six row of PTC constructed by AalborgCSP A/S in Tårs, in the northern part of Denmark [11,12] (longitude 10.12º E, latitude 57.39 ºN). The PTCs were manufactured by Aalborg CSP A/S [12].…”

“…The inclinometers used to measure the PTC rotation are manufactured by Gemac and are positioned on the collector structure at the drive station in the center of row. The tracking accuracy of ±0.5º had been checked in a previous study [11]. The heat transfer fluid used the plan was water 120018-2…”

“…The first FPC field heats the district heating water from the return temperature level and then the PTC field heats the water to full temperature around 95 ºC with a better efficiency at higher temperature. In previous studies, more than one year data have been analyzed and compared to the production simulation of the plant with TRNSYS [10], and the accuracy of the trackers of the PTC have also been studied [11].…”