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Table 9 Result of exergy analysis [onion] 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 0.210 0.277 0.067 307.0 68.10 23.5 34.5 36.3 1.0051 1.0052
3600 0.196 0.288 0.092 231.5 349.2 66.3 53.06 35.2 24.8 35.7 38.1 1.0052 1.0053
7200 0.221 0.304 0.083 226.4 341.3 66.4 62.44 41.5 25.8 37.3 39.5 1.0053 1.0053
10,800 0.698 0.794 0.096 288.3 310.4 92.9 86.25 80.1 27.9 48.8 50.3 1.0057 1.0057
14,400 0.598 0.676 0.087 310.3 376.2 82.5 85.48 70.5 27.3 46.6 47.9 1.0056 1.0056
18,000 0.841 1.030 0.189 306.6 359.8 85.2 77.53 66.1 28.1 51.1 53.7 1.0056 1.0058
21,600 1.241 1.471 0.230 262.8 304.3 86.4 81.46 70.4 30.9 59.1 61.8 1.0061 1.0062
25,200 1.075 1.266 0.191 253.3 282.4 89.7 82.22 73.7 31.1 57.3 59.7 1.0061 1.0061
28,800 0.898 1.086 0.188 217.5 253.3 85.8 79.06 67.8 30.3 54.1 56.7 1.0059 1.006
32,400 0.820 0.923 0.103 207.1 264.8 78.2 87.44 68.4 28.1 50.8 52.3 1.0057 1.0058
36,000 0.711 0.888 0.174 156.9 221.5 70.9 75.53 53.6 26.1 47.1 48.3 1.0056 1.0056
39,600 0.274 0.356 0.082 182.4 267.4 68.2 70.07 47.8 24.3 37.2 39.1 1.0052 1.0053