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Table 12 Result of exergy analysis [onion] 4th day

From: Potential assessment and experimental analysis of solar vegetable dryer: in case of northern Ethiopia

Time (s) \({\text{Ex}}_{\text{dco}}\) (kJ/kg) \({\text{Ex}}_{\text{dci}}\) (KJ/kg) \(Ex_{loss}\) (KJ/kg) \({\text{Ex}}_{\text{out}}\) (w) \({\text{Ex}}_{\text{rad}}\) (w) \(\eta_{{{\text{Ex}}.{\text{solar}}}}\) \(\eta_{{{\text{Ex}}.{\text{do}}}}\)(%) \(\eta_{{{\text{Ex}}.{\text{net}}}}\) Ta (°C) Tdco (°C) Tdci (°C) \(\bar{c}_{p}\)(KJ/kg K)
0 0.295 0.395 0.100 289.8 66.01 24.5 37.9 40.1 1.0052 1.00532
3600 0.172 0.220 0.048 124.0 192.0 64.6 72.10 46.6 29.3 36.7 41.1 1.00536 1.00550
7200 0.210 0.301 0.091 119.0 203.3 58.5 56.66 48.4 31.1 42.3 44.8 1.0056 1.00570
10,800 0.889 0.901 0.012 158.2 222.8 71.0 96.65 70.0 32.3 54.6 56.2 1.0060 1.00600
14,400 0.895 1.200 0.305 168.5 188.2 89.5 65.92 59.0 34.9 58.9 63.4 1.0062 1.00630
18,000 1.283 1.416 0.133 199.8 233.7 85.5 89.63 76.6 33.4 62.2 64.9 1.0062 1.00633
21,600 1.161 1.351 0.19 211.8 249.3 84.9 83.63 71.0 31.9 59.2 62.8 1.0061 1.00620
25,200 0.775 0.961 0.186 226.8 307.7 73.7 76.00 56.0 28.9 52.4 56.1 1.0058 1.0060
28,800 0.931 1.150 0.219 170.8 229.7 74.3 76.48 56.8 28.1 52.3 55.2 1.0058 1.00591
32,400 0.698 0.858 0.16 142.4 192.3 74.0 77.07 57.0 27.9 48.8 51.2 1.0057 1.00580
36,000 0.641 0.832 0.191 154.6 228.6 67.6 70.20 47.5 25.9 45.7 47.3 1.0055 1.00560
39,600 0.456 0.615 0.159 187.2 302.5 61.9 65.13 40.3 23.4 40.1 42.9 1.0053 1.00534