Thermal Performance Enhancement of a Flat Plate Solar Collector Using Corrugated Riser Tubes: An Experimental Study : Experimental Dataset

This dataset contains experimental measurements collected during a comparative study of smooth and transversely corrugated copper riser tube flat plate solar collectors (FPSCs) tested under real outdoor winter conditions in Baghdad, Iraq (latitude 33.3°N, tilt angle 55°). The dataset includes the following: performance metrics for both smooth and corrugated tube configurations across Reynolds numbers Re = 4,000–8,000: — Nusselt number (Nu) — Darcy-Weisbach friction factor (f) — Maximum instantaneous thermal efficiency (η max) — Useful heat gain (Qu) — Maximum outlet fluid temperature (Tout, max) — Convective heat transfer coefficient (h) — Performance Evaluation Criterion (PEC) — Pressure drop (ΔP) — Pumping power (W_pump) — Parity plot data (experimental vs. predicted Nusselt numbers) Corrugated tube geometry: rib height e = 0.9 mm, pitch p = 10 mm, helix angle α = 90°, e/D = 0.052, p/D = 0.580, inner diameter D_i = 17.25 mm. Working fluid: deionized water. Number of riser tubes: N = 5. Collector area: A_c = 0.90 m². This dataset supports the findings reported in the manuscript submitted to Energy Sources, Part A: Recovery, Utilization, and Environmental Effects.