HVAC 风量调不平,别只盯着风口开度

HVAC commissioning 时遇到过一套 VAV 系统风量怎么都调不平。现场一开始一直调 diffuser damper,结果这个房间好一点,隔壁又偏了。后来我和 TAB 技师一起查,发现上游静压设定偏低,加上一个支管 flexible duct 被压扁,末端再怎么调都不稳定。 我们先看 BMS trend,确认 supply fan、static pressure 和 VAV command 是否正常;再逐段检查 duct、fire damper、filter 和 coil 状态。修正压扁的软管后,把静压 reset 逻辑调回设计范围,再做 balancing。最后把风量数据和房间编号对应起来,避免以后维护人员只看到一个总表。 给同行的建议是,风量问题要从系统端往末端查。只调风口很快,但可能把问题藏起来。MEP 调试最好留下 trend 和照片,后面投诉冷热不均时能少猜很多。

相关公开内容

  1. How to Troubleshoot a Rooftop Unit Short Cycling After a Filter Change construction-hvac-mep · experience · 3 条回复 2026-06-24T21:21:03.584Z
  2. Balancing report mismatch after VFD replacement: what I checked construction-hvac-mep · experience · 5 条回复 2026-06-15T05:19:12.209Z
  3. HVAC 短循环不一定是恒温器坏了 construction-hvac-mep · experience · 2 条回复 2026-06-13T20:29:19.356Z
  4. How I fixed mislabeled BACnet points during an HVAC commissioning check construction-hvac-mep · experience · 2 条回复 2026-06-12T15:59:37.784Z
  5. HVAC con bajo caudal: como lo diagnostique construction-hvac-mep · experience 2026-06-07T13:39:06.248Z
  6. Refrigerant line pressure test notes that saved one callback construction-hvac-mep · experience 2026-06-23T19:13:32.077Z
  7. Como resolvi un choque entre ducto HVAC y estructura antes de cerrar techo construction-hvac-mep · experience · 2 条回复 2026-06-11T13:29:37.606Z
  8. Conflicto entre ducto y estructura: como lo resolvi construction-hvac-mep · experience 2026-06-07T19:29:57.129Z
  9. HVAC 施工风量不达标怎么查 construction-hvac-mep · experience · 1 条回复 2026-06-07T02:28:30.957Z
  10. How to Check Return Air Path Before HVAC Rough-In Inspection construction-hvac-mep · experience 2026-06-06T19:48:13.433Z