Hello everyone, appreciate it greatly if I can hear some opinions. A few years ago, when I was doing a paid student attachment with a HVAC supplier company, I helped to prepare AHU equipment schedules for building projects. In many of the schedules that I prepared for my company, I failed to add...
Hi all,
I'm interested in finding the differential airflow at a given differential pressure. But to do this, I need to have the leakage area of the room. I've tried searching online but have found little results. Is there any manual/standards out there to help estimate the leakage area due to...
Sorry could you clarify this a little, I'm a bit confused: if there are flow issues caused by the air bubbles, then wouldn't the FCU performance be affected since cooling capacity is influenced by water flow rate? Also, Wall-mounted FCUs will probably face the same issues as the AHU one you...
What happens if the air bubbles don't get swept out? The FCUs in question are wall-mounted, would the space the FCUs are serving be cooled and dehumidified appropriately? I understand there is testing and commisionning done after installation too, will a typical testing and commisionning process...
THe flow rate I might have put in would be 3.6 higher than the supposed one in l/s, because the specs sheet had it in m3/h and my column for flow rate in the equipment schedule was in l/s. So the real flow rate might actually be 3.6x less than the value I put in the schedule. By that, I figured...
Thanks EP and LittleInch! Would the low velocity have any corrosion/wear effect on the pipes though? I also thought with a lower water velocity, the heat transfer effect would be lower too? @LittleInch what do you mean by air vents at every high point?
I'm actually asking about this because I...
If we oversize the chilled water pipe, would a low chilled water velocity have an impact on the cooling performance of the FCU/AHU? Would it have an impact on the overall indoor air quality? A lower friction rate would also be indicative of low water velocity right? Thanks for the insight so far...
Hello, appreciate some insight on this.
For sizing chilled water pipes serving fan coil units, is there a minimum water velocity that the chilled water must have based on the flow rate and pipe size? I have searched online and I only seem to see maximum water velocity requirement instead of...
