Discussion on cooling test conditions of ground air conditioning equipment for airports

Analyses the application characteristics of ground air conditioning equipment for airports and the differences compared with unitary air conditioning equipment and direct evaporation all outdoor air handling unit. Points out that the lack of unified standard about cooling test condition causes some confusion on design and evaluation for this type of equipment. Referring to the civil and military standards at home and abroad and the long term climatic data, suggests that the rating cooling performance test condition should take 35 ℃ as dry-bulb temperature and 28 ℃ as wet-bulb temperature. The maximum cooling load test condition for civil equipment should take 46 ℃ as dry-bulb temperature and 30 ℃ as wet-bulb temperature. The maximum cooling load test condition for military equipment should take 50 ℃ as dry-bulb temperature and 33 ℃ as wet-bulb temperature.