Numerical and Experimental Study on Energy Performance of Photovoltaic-Heat Pipe Solar Collector in Northern China

Table 1

List of testing devices.

Item	Device	Quantity	Location
1	Pyranometer; (TBQ-2, China)	1	The same tilt surface beside PV panel
2	Calibrated flow indicator; (LZT-15G, China)	1	Water tube after pump
3	Data logger; (Agilent 34970A, USA)	1	Indoor workbench
4	PT100 temperature sensor; (WZP-01, China)	5	Two at inlet and outlet of manifold and three in water tank