幕墙试验和测试英语.pptx

性能测试视觉样件样品送审现场安装;Performance Test;Air permeability 气密 Watertightness 水密 Wind load test serviceability风压适用性 Wind load test safety 风压安全性;test sequence 试验顺序 reference 参考标准 classification 等级 test procedure 测试过程 positive pressure 正压 pressure pulse 压力脉冲 pressure steps 压力阶 压力级 negative pressure 负压 test result 测试结果;Test sequence 试验顺序 ;Reference 参考标准;3.1. Classification According to EN 1026 Class 4 we will achieve. 3.2. Test Sample Property Total area: 1.88·0.965=1.81m2=A 3.3. Test Ambient Condition The test ambient temperature and humidity shall be within range 10°C to 30°C and 25% to 75%. In no case shall the air permeability of the test chamber exceed 30% of the overall air permeability of the test specimen and the test chamber.;1. Seal all joint in the test specimen with adhesive tape or an airtight sheet covering the whole test specimen. Measure the air permeability of the test chamber with positive pressure as describe in item 3 to get Qc. 2. Detach the covering sheet. Then measure the air permeability as item 3. ;3. Apply three pressure pulses 660Pa (10% greater than the maximum test pressure to be used in – class 4: Pmax=600Pa). The time to reach the maximum test pressure shall be not less than 1S and the pressure shall be sustained for at least 3S. Apply positive test pressure steps of 50Pa to 300Pa and from 300Pa in steps of 150Pa. The duration of each step shall be sufficient to allow the test pressure to stabilize before the air permeability is measured. Take down every pressure step test value, Qt;4. For negative pressure only perform this when specifically and repeat item 1, 2, and 3 with negative pressure. ;5. Calculate the air flow result (Vx =Qt-Qc) at each step, and adjust by the following format to get (Vo) at normal conditions (To=239K; P0=101.3KPa) Tx: actual temperature expressing in °C Px: atmospheric pressure expressing in kPa;6. Calculate the reference air permeability for joint length by the formula: ;Compare th