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  • License Activation

    Product(s): Hevacomp Version(s): V26 Environment: N/A Area: All Subarea: License Activation Overview This document explains how to enter your Activation Key to activate your Hevacomp license…

  • Hevacomp Energy Assessor course and exam - London, May 2018

    Hevacomp Energy Assessor (Non-dwelling) Level 3 & 4 (SBEM) Allows Hevacomp users - via an accredited Energy Assessor scheme provider - to work towards Energy Assessor status to show competency in production of EPC's using an approved SBEM interface…

  • Netsys warning - Insufficient Pressure

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Netsys Subarea: All Problem A message stating Insufficient pressure for outlet on current floor is returned upon sizing a system…

  • Netsys Chilled Water Pipe Sizing error/glitch

    Hi All, I'm trying to calculate the pressure drop for a chilled water system which starts with 250mm diameter pipe and reduces in size before it reaches the emitters. The issue i'm having is that even though I've fixed the pipework size for flow and…

  • Bentley Hevacomp - BS 7671 Amendment 3 (Correction Factor cmin)

    I have been asked to clarify that the correction factor cmin been used for calculations with the Hevacomp connect software Is this true and if so how

  • Hevacomp Part L Energy Assessor course and exam - September 2017

    Hevacomp Energy Assessor (Non-dwelling) Level 3 & 4 (SBEM) Allows Hevacomp users - via an accredited Energy Assessor scheme provider - to work towards Energy Assessor status to show competency in production of EPC's using an approved SBEM interface…

  • EPC and Recommendations menus

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Design Database Subarea: Part L Problem Part L EPC and Recommendations tabs are greyed out, as below. Solution This occurs…

  • RE: Connect - poorly aligned text on plots

    Hi Andreas, I can confirm that the original issue was resolved in Hevacomp v26 , however there is a slight misalignment of Board names in some instances. This only applies to PDF's, so a workaround is to export to DXF (File>Export DXF), in which all…

  • Hevacomp Mechanical Designer Course - London

    This instructor-led, classroom-based course will cover all major mechanical design programs within Hevacomp, including: Design Database CAD Input Load Calculations Netsys Pipe and Duct Sizing No prior knowledge of Hevacomp software required…

  • RE: Modelling a zone (room) within a zone (room)

    Hi Stuart, Modelling of such spaces can only be directly achieved in Hevacomp Simulator by using Atrium key words. However if you wish to use Design Database for level 3/4 Part L calcs then there are three workaround options available - please see further…

  • RE: Hevacomp upgrade problem

    Hi Martin, please find steps showing how to resolve this matter here.

  • RE: Plant Schedule

    Hello Matt, Can you clarify which software you wish to do this in? Are you talking about Design Database - PartL or Dynamic Simulation? Regards Steve

  • RE: HVAC Systems - Zones

    Hi Matt, I would firstly advise caution if you are intending to use Part L to determine if natural ventilation is required, as SBEM is not a design tool indicative of real-world conditions. (To see if natural ventilation is required you would need to…

  • Prepare this May for your Hevacomp Software competency exam…

    Beginning in May, we are offering the Hevacomp System Builder Mechanical for Energy Assessors courses. These courses are for Hevacomp users preparing for Energy Assessor status with one of the accredited EA scheme providers. These courses work towards…

  • HEVAcomp export options (into AECOsim)

    What are the options for getting HEVAcomp models into (3D) Microstation or AECOsim?

  • RE: Yearly Gas Useage

    While these results are not directly available in the software, the Energy calculation in Design Database may be helpful as it will provide the annual energy usage in GJ. You could then use these figures to work out your gas consumption.

  • Omitted Recommendations shown in Recommendations Report

    Product(s): Hevacomp Version(s): V26 Environment: N/A Area: Design Database Subarea: Part L Problem 'Omit Recommendation' selections are not reflected in the Recommendations Report. Solution…

  • BREEAM HEA04 requires calculations for PMV and PPD. Can we do this in Hevacomp?

    BREEAM HEA04 requires calculations for PMV and PPD. Can we do this in Hevacomp?

  • Bentley Hevacomp V8i SS1 Update 5 now available for download

    Hevacomp Update 5 can be downloaded as detailed here. This incremental update addresses changes to the UK Part L SBEM and BRUKL engines for lodging EPC’s. Design Database interface to SBEM V5.3a is accredited for producing English, Welsh and Scottish…

  • CIBSE Gain calculation - Importance of accurate input data

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Design Database Subarea: Results Overview Unusual results are likely to occur if Building model data is inadequate. Method Comprehensive…

  • Hevacomp Part L, SBEM update 5.3.a and 4.1.g

    Changes to the SBEM calculation were recently introduced, mainly to incorporate new constructions from the updated NCM modelling guides. Thus, Energy Performance certificates and Compliance documents must now be generated with: SBEM 5.3.a - for Part…

  • RE: Variable Flow systems in Netsys

    Hi Nicholas, It is not possible to directly specify variable flow at outlets, however diversity of pipework systems is now taken into account in accordance with BS EN 806-3. Please find further details about the calculation method here.

  • Variable Flow systems in Netsys

    It's been some years since I used Hevacomp and am now considering purchasing for my mechanical team. Can someone explain to me if it is now possible to consider diversity and variable flow in the piped and ducted systems? If for example, we consider…

  • RE: wall heights

    Hi, Please use the 'Setup intermediate floors/ceilings' function (located in CAD Input > Roof/floors ) to set up the adjacencies between these floors. This will remove all gaps between your floors.

  • RE: Window glazing properties, CIBSE Gain

    Hi Kenny, The different standards used by each Hevacomp calculation prescribe their own equations, each requiring their own particular variables. In the case of the CIBSE Gain calc the most important variables are the Solar Gain Factors. SHGC is not…
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