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Table 7 Result of exergy analysis (potato) 2nd 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) \({\text{Ex}}_{\text{loss}}\) (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 0.392 0.492 0.10 304.0 74.48 22.9 36.2 40.3 1.0051 1.0053
3600 0.385 0.475 0.09 298.6 335.2 89.1 76.63 68.3 23.1 38.4 41.8 1.0052 1.0053
7200 0.303 0.410 0.107 224.8 278.6 80.7 64.68 52.2 25.5 39.1 42.5 1.0053 1.0054
10,800 0.797 0.831 0.034 203.2 327.7 62.0 95.93 59.5 27.3 48.1 50.2 1.0056 1.0057
14,400 0.745 0.873 0.128 208.8 326.1 64.3 82.82 53.3 27.7 49.3 51.2 1.0057 1.0057
18,000 1.470 1.490 0.02 294.9 319.4 92.3 98.64 91.0 28.1 54.5 58.2 1.0058 1.0059
21,600 1.365 1.410 0.045 219.5 247.6 88.6 96.70 85.7 30.9 58.2 61.1 1.0061 1.0061
25,200 1.045 1.167 0.122 185.3 240.7 77.0 88.33 68.0 30.5 56.3 57.9 1.0060 1.0061
28,800 0.830 0.939 0.109 128.6 197.9 64.9 86.87 56.4 30.3 53.2 54.8 1.0059 1.0059
32,400 0.820 0.891 0.071 132.5 205.7 64.4 91.34 58.8 28.1 50.8 51.8 1.0057 1.0060
36,000 0.891 0.973 0.082 122.5 219.2 55.8 90.79 50.7 26.2 45.3 47.3 1.0055 1.0056
39,600 0.504 0.760 0.236 141.6 258.9 54.7 51.1 27.9 24.5 42.1 46.3 1.0054 1.0055