Data for Performance of evacuated flat plate solar thermal collectors

Testing under a solar simulator, with and without a vacuum, showed a sudden drop in heat loss as the pressure was reduced below 0.5 Pa. When evacuated the heat loss coefficient fell from 7.43 to 3.65 W/m2 K and the efficiency at a nominal test condition of ΔT = 60 °C, G = 1000 W/m2 increased from 36% to 56%. Heat losses from absorber to glass were within 9% of the predicted level.

This demonstrates that the heat loss mechanism is well understood.<br><br>This code was written in Matlab r2017a but is not in any sense version - specific. Typically a script file will either produce a single figure or is designed to be run in sections, producing one graph after another. The function files are almost always called by script files.

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