Performance Investigation and Structure Optimization of a Flat Dual-Function Solar Collector

Table 2

Air heating efficiency of the collector under different operating conditions (E: experimental; S: numerical).

Date	(kg/s)	(°C)	(°C)	()	(%)	(%)	(%)
06/21	0.027	33.0	56.5	751.8	55.6	55.9	7.27
06/20	0.04	31.9	50.3	818.7	60.2	61.7	8.49