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Table 8 Result of exergy analysis (potato) 3rd 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 0.331 0.350 0.019 386.5 94.25 22.5 34.3 37.5 1.005 1.0052
3600 0.455 0.631 0.176 190.3 356.2 53.4 61.34 32.7 24.1 40.8 44.0 1.0053 1.0054
7200 0.753 0.817 0.064 229.1 356.2 64.3 91.46 58.8 24.5 46.1 47.1 1.0055 1.0055
10,800 1.236 1.248 0.012 292.8 326.3 89.7 97.50 87.5 27.5 55.5 56.8 1.0058 1.0059
14,400 1.280 1.359 0.079 272.3 294.3 92.5 93.83 86.8 29.5 58.1 60.1 1.0060 1.0061
18,000 1.091 1.166 0.075 243.5 289.3 84.2 93.12 78.4 28.5 54.8 56.9 1.0059 1.0059
21,600 1.093 1.183 0.091 299.3 368.6 81.2 91.69 74.5 27.8 54.1 55.2 1.0058 1.0059
25,200 1.382 1.511 0.129 254.1 292.5 86.9 90.63 78.8 28.4 58.1 59.6 1.006 1.006
28,800 0.970 1.041 0.071 151.4 211.8 71.5 92.68 66.3 29.5 54.3 55.3 1.0059 1.0059
32,400 0.751 0.883 0.132 143.1 191.9 74.5 82.42 61.4 28.8 54.2 55.1 1.0058 1.0059
36,000 0.551 0.741 0.190 132.7 229.5 57.8 65.52 37.9 26.3 44.7 47.9 1.0055 1.0056
39,600 0.320 0.451 0.131 70.71 129.5 54.6 59.10 32.3 24.5 38.3 41.2 1.0052 1.0057