RE: HIU SIZING / HIU COLD FEED SIZING / HIU SIMULATION HELP

Shane Regan — Fri, 21 Aug 2020 13:14:27 GMT

Hi Seamus,

My first thoughts would be that modeling these may be somewhat outside the intended scope of BS806, as this is based on normal outlets, as you mention. So you may struggle to effectively model all components from the plant room, to HIU to outlets, in one single project.

You may need to consider modelling the system over two projects:

One to model the individual outlets in each apartment, where each HIU is entered as a System Marker.
The second to model the flow from the plant room (System Marker) to the HIU's, where the HIU's are entered as Special outlets (each with flow rate entered as calculated in results in step 1).

You would just need to export the results from each project to Excel and combine the relevant parts. This should mean that the diversity is taken into account at local level, and the pipework is not oversized at plant / HIU level.

Hopefully that helps, please let me know how you get on.