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Vehicles with fixed displacement compressors appear frost on the evaporator surface in a hot and humid environment, which affects driving comfort seriously. Starting from this practical problem, this paper aims to formulate a test method for the determination of the protection temperature of the evaporator with a fixed displacement compressor. 5 major evaluation items are formulated from the development perspective of vehicle air conditioning system. The Analytic Hierarchy Process (AHP) method is applied to establish an evaluation index system for the determination of the evaporator protection temperature and the evaluation criteria are established. The feasibility and effectiveness of this model is verified by typical cases, finally the method for determining the evaporator protection temperature of a passenger car with compressor provides an important reference for the selection of the best evaporator protection temperature range and the development of an efficient air conditioning system.
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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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