Table 6.

Variation in the experimental results with the local time.

Time (hr)	Tank fluid temperature (°C)			Receiver fluid temperature (°C)			Fresh water productivity (ml/hr)			Thermal efficiency %
	Water	Water-Al2O3	Water-ZnO	Water	Water-Al2O3	Water-ZnO	Water	Water-Al2O3	Water-ZnO	Water	Water-Al2O3	Water-ZnO
8	31	32.9	32	32	33.9	32.8	0	0	0	0	0	0
9	31.8	35.2	34.7	40.1	45.3	44.3	85	180	110	0.062	0.159	0.092
10	32.3	35.8	35	63.3	69.8	66.1	290	400	320	0.706	1.065	0.780
11	34	39.2	38.2	77.1	86.5	84.1	550	930	650	1.496	2.782	1.890
12	36.7	39.7	38.9	84.7	91.7	88.4	1220	1800	1590	3.502	5.588	4.690
13	38.1	41.8	40.5	87.1	93.8	90	1850	2750	2550	5.695	8.976	7.938
14	39.2	42.5	41.5	88.2	96.5	91.5	2750	3950	3250	9.877	15.618	11.872
15	38.4	42	40.8	87.4	94.2	90	1920	2550	2220	8.502	11.996	9.870
16	37.2	41.1	40.3	84.2	88.8	86.9	1285	1760	1520	6.426	8.904	7.549
17	36.2	40.6	40	80.2	85.6	83.1	1050	1450	1190	13.791	19.478	15.380
18	34.3	39.9	38.8	75.4	82	79.5	830	1210	1020	20.093	30.006	24.897