Table 8 Result of exergy analysis (potato) 3rd day
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 |