An Experimental Study and Analysis on Solar Drying of Bitter Gourd Using an Evacuated Tube Air Collector in Thanjavur, Tamil Nadu, India

Table 1

Hourly variation of solar insolation, wind velocity, and temperature for bitter gourd (average of 3 days).

Time	Solar insolation W/m^2	Wind velocity m/s	RH %	Temperature (°C)
				Amb.	ETC in	ETC out	Tray 1	Tray 2	Tray 3	Chim.
				𝑇0	𝑇1	𝑇2	𝑇3	𝑇4	𝑇5	𝑇6
9.00	460	0.63	56	33	45	109	49	49	50	47
10.00	663	0.72	56	32.7	50	114	70	66	58	59
11.00	865	1.14	50.7	34	52	119	77	70	64	63
12.00	1126	1.23	43.5	36.2	52	127	83	77	69	68
13.00	1085	2.85	34.7	36.2	53	131	86	80	72	72
14.00	893	1.38	35.5	37	52	122	83	77	71	70
15.00	713	1.8	40	35.5	51	108	77	73	67	66
16.00	396	1.9	44.7	33.5	47	95	74	68	63	62
17.00	234	1.61	50.2	33.2	44	75	66	60	55	54