In this research, a one-dimensional heat transfer model was built for a specific thermoelectric module to better estimate property of thermoelectric generator and optimize structure. The three-dimensional flow field and heat transfer models were also established for different thermoelectric generator structures, those two models were coupled to realize the direct display of power output of thermoelectric generator. Based on the coupled models, thermoelectric generators with four different structures were compared and analyzed. The results show that, under the conditions of exhaust gas temperature 523 K and flow rate 0.02 kg/s, the maximum net power output of the heat exchanger structure with staggered fins and a fin spacing of 10 mm and an angle of 8° is 133 W, which is about 14% higher than that of the basic control group with neatly arranged fins and no angle of opening.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |