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  • Hevacomp to openbuilding designer. Heating, gas, Hot and cold pipework design.

    As i understand. Bentley Hevacomp is being retired and replaced with openbuilding designer. I cannot find any training for openbuilding designer to do with plumbing systems. Only ductwork ventilation systems. I would like to know how to design a heating…

  • CHP will not connect to an HWS sysytem

    Product(s): OpenBuildings Energy Simulator Version(s): CONNECT Edition Environment: N/A Area: Part L Subarea: N/A Overview CHP cannot be directly and solely connected to HWS. Method At…

  • Copying CWS Outlets to HWS

    Is it possible to copy outlets between CWS and HWS in Netsys? This would save a lot of time. Thanks

  • RE: Same Loading Units Different Flowrates

    For other users who may experience the above - this issue was due to different pipe sizing standards at each outlet. Please find further details here.

  • Inconsistent Flow Rate at Outlets

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Netsys Subarea: HWS and CWS Problem Description Outlets in HWS or CWS systems may have differing Loading Units, despite the outlets…

  • RE: How to include Hot water cylinder in Netsys (CWS)

    Hi Jozef, The guidance here should assist with modelling this.

  • Same Loading Units Different Flowrates

    Hi I have created a HWS system consisting largely of en-suits of bedrooms. Each en-suite has a two number of basins and 1 shower nozzle. They are calculated using the same method (BS EN 6700), and have the same loading units. They branch coming in…

  • HWS resistance projects

    Test projects demonstrating: twin pipe outlet connections will include extra outlet resistance when sizing circulation pumps. single pipe outlet connections will not include extra outlet resistance when sizing circulation pumps. These files…
    • HWS Test Projects - Circulation resistance.zip

  • CHP will not connect to an HWS sysytem

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Overview CHP cannot be directly and solely connected to HWS. Method At this time,…

  • RE: de-active snap grid

    Hi Arun, you can change this setting by going to Pipes > Defaults, and deselecting the Snap Grid option. Also, if you wish to change the Ortho settings you can do so by going to Defaults>Ortho. You can see this operation if you view this document .

  • Including Hot Water System feed in your Cold Water System

    Product(s): Hevacomp Mechanical Designer Version(s): V8i Environment: N/A Area: Netsys Subarea: Pipework Design Overview Often as part of a Cold Water System (CWS) there will be a supply to…

  • Netsys HWS Sample Project

    Netsys HWS Sample Project - unzip into new folder and open with the Netsys HWS program
    • SAMPLEHWS.zip

  • Energy Calculation - HWS demand

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Overview The Daily HWS demand for the Energy Calculation is based on litres/per person…
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