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Design a marine ammonia fuel SOFCGT hybrid power system based on the power requirements of ships, and establish a detailed model of the hybrid power system. Analyze the influence characteristics of ammonia decomposition conversion rate of ammonia decomposer under changes in ammonia flow rate and inlet temperature. Under the limiting conditions of fuel cell temperature gradient, compressor surge safety zone, and turbine inlet temperature, the operational performance of the hybrid power system was analyzed. The effects of ammonia flow rate and ammonia decomposer inlet temperature on the performance of the hybrid power system were studied. The main conclusions are as follows: the output power of the hybrid power system reaches 350.5 kW, and the power generation efficiency reaches 62.40%. When the inlet temperature is above 1 050 K, the conversion rate of ammonia decomposition is close to 100%. The ammonia decomposition conversion rate shows a decreasing trend with the increase of flow rate. When the inlet temperature is high, the influence of flow rate on the decrease of ammonia decomposition conversion rate gradually decreases. When the ammonia flow rate gradually approaches 1.80 mol/s, the performance of fuel cells, gas turbines, and systems gradually increases with the increase of ammonia flow rate. However, the ammonia flow rate in the system should not be too high. When the ammonia flow rate reaches 1.80 mol/s, the turbine inlet temperature has exceeded the safe operating range. When other operating conditions are design conditions, the overall performance of the system improves as the inlet temperature of the ammonia decomposition reactor gradually increases to 1 129 K.
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| 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 |
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