Table 9 Result of exergy analysis [onion] 1st 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 | 0.210 | 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 |