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Outline
To investigate the impact of different control strategies on the performance of vehicle CO2 refrigeration systems, this study conducted bench tests to analyze the effects of supply air temperature requirements, indoor air volume, and ambient temperature on the cycle characteristics of a CO2 refrigeration system with a heat recovery function under constant supply air temperature control. Simultaneously, the optimal discharge pressure fitting correlation based on the demand for supply air temperature was established. Research results indicate that among the operating conditions studied, ambient temperature has the most significant influence on optimal discharge pressure, followed by indoor air volume, while the impact of the supply air temperature is minimal. In addition, the evaporator outlet refrigerant temperature is positively correlated with the EER, with an average increase of approximately 2.6% in EER for every 1℃ rise in outlet temperature.. The correlation formula for optimal discharge pressure, derived from the requirements of supply air temperature, demonstrates a relatively high credibility, offering new insights for the optimization of control strategies.
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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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