Friskluftventiler med h�g ljudreduktion
| 项目名称： | Friskluftventiler med h�g ljudreduktion |
| 摘要： | Trafikverket (Swedish Transport Administration) conducts annual noise protection measures for existing homes for many millions. Fresh air valves are often limiting how high sound reduction that can be achieved in the facade, making it difficult to reach the target values indoors in noisy environments. In this project, the objective is to develop several types of fresh air vents in cooperation with several companies. Both wall valves and slit valves need to be developed. The valves can have passive sound traps and / or be active and switched to the high noise levels, eg at a passing. Sound reduction needs to be at least Dn,e,w + C 52-55 dBA for slatted vents and Dn,e,w + C 55 dBA for wall valves. All valves should be easily installed in existing homes. |
| 资金： | 0.00 |
| 资助组织： | Trafikverket, Sweden |
| 项目负责人： | Olofsson, Katrin |
| 执行机构： | Trafikverket, Sweden |
| 开始时间： | 20160701 |
| 预计完成日期： | 20180330 |
| 实际结束时间： | 0 |
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