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Table 6 Result of exergy analysis (potato) 1st 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 0.230 0.330 0.10 323.20 56.52 23.6 35.3 37.9 1.0051 1.0052
3600 0.434 0.531 0.097 207.7 242.66 85.6 77.65 66.5 27.7 44.1 45.9 1.0055 1.0056
7200 0.181 0.187 0.006 164.1 282.34 58.1 96.68 56.2 28.5 49.3 50.8 1.0057 1.0058
10,800 1.381 1.457 0.076 184.1 280.70 65.6 94.49 62.0 28.7 58.4 60.3 1.006 1.0061
14,400 1.479 1.554 0.075 211.7 324.55 65.2 94.93 61.9 29.3 60.1 61.0 1.0061 1.0061
18,000 1.915 1.982 0.067 156.8 243.30 64.4 96.50 62.1 32.1 62.8 64.5 1.0062 1.00625
21,600 1.910 1.987 0.077 222.9 278.10 80.2 95.97 76.9 30.1 65.3 66.9 1.0062 1.0063
25,200 0.981 1.060 0.079 176.7 232.64 75.9 91.89 69.7 30.0 55.9 57.0 1.006 1.00602
28,800 0.613 0.771 0.158 165.5 253.40 65.3 74.23 48.5 29.5 49.1 50.1 1.0057 1.0058
32,400 0.410 0.488 0.078 138.8 201.87 68.8 80.97 55.7 28.6 44.5 46.1 1.0056 1.0056
36,000 0.240 0.350 0.11 155.8 221.4 70.1 54.17 37.9 26.3 38.4 42.1 1.0053 1.0054
39,600 0.266 0.324 0.058 161.5 262.1 61.6 78.19 48.2 24.2 34.2 38.3 1.0051 1.0053