Energy and Economic Analysis of Curved, Straight, and Spiral Flow Flat-Plate Solar Water Collector

Table 4

Cost analysis of the proposed SWH.

SWH (kg/s)	Electrical energy savings (kWh/day)	Fabrication cost (Rs)	Annual cost/kg	Useful energy (kWh/annum)	Cost (kWh/annum)	EPBT (years)
FPC (0.004)	2	125	0.0064	474.5	0.0608	2.55
FPC (0.006)	2.25	125	0.0072	533.8	0.0540	2.27
CFC (0.004)	2.4	126.3	0.0076	569.4	0.0512	2.13
CFC (0.006)	2.6	126.3	0.0082	616.8	0.0473	1.96
SFC (0.004)	2.7	123	0.0088	640.5	0.0443	1.89
SFC (0.006)	2.9	123	0.0094	688.0	0.0413	1.76