GB 51251-2017 第9.2.2条
- **** | Smoke control fans (pressurization supply fans) shall be capable of continuous operation for 30 min at 280℃. The pressurization supply fans for hotel stairwells and vestibules must meet this requirement.
- **** | Smoke control fans (pressurization supply fans) shall be capable of continuous operation for 30 min at 280℃. The pressurization supply fans for hotel stairwells and vestibules must meet this requirement.
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