XML Generation for EPC
I've been trying since 6PM GMT to generate an xml for EPC lodgement. Its now 12AM GMT and still nothing.
The latest upgrade is installed.
This needs lodging by 12PM 26/09.
Anybody any pointers?
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
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…
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…
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.
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?
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…
RE: Adding a layer type on wall build up
Hi Kostas,
You can enter the thermal properties of the material by selecting Special Solid Layer, at the bottom of the Layer Type list:
Adding a layer type on wall build up
Hi,
I am a newbie on the software and I would appreciate your help.
I am trying to calculate the U-Values of an existing external wall for a residential property. The insulation I need to add is kingspan kooltherm K118 however the software doesn…
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.
RE: How to include Hot water cylinder in Netsys (CWS)
Hi Jozef,
The guidance here should assist with modelling this.
How to include Hot water cylinder in Netsys (CWS)
I'm designing the CWS. The Hot water installation requires a Cylinder.
How can include a cylinder in the CWS design? I just can find the option to include a Cold water tank in the system.
Thanks
RE: Pipework Velocities Input
Hi Jamie,
The CIBSE table is using typical bands therefore it would make sense to enter the highest CIBSE value for each band in the system marker. This limits the velocity for any sizes within that band. The settings shown below would meet that criteria…
Limitations, assumptions and approximations of Hevacomp, particularly CIBSE Gain
I am wondering if you could help point me in the right direction.
I am wanting to better understand what are the limitations of Hevacomp in terms of the underlying assumptions and approximations that the software uses.
I am mostly interested in the…
RE: Glazing database - effect of adding blind on G value and Shading co-efficient - CIBSE Gain
Hi Michael,
It is my understanding that the Uvalue and light Transmittance figures will not be affected by the blind, while the Shading Coefficient and SHGC would definitely be impacted. However the glazing manufacturer will need to confirm this for…
RE: Rooflights - Design Simulation
Hi Andrew, Rooflight openings are assumed to be a flat opening based on a specific percentage of the rooflight area. For pivoting rooflight openings the Opening Factor should be determined from the window/rooflight opening angle, where the minimum opening…
RE: cable calcs
Hi Ian, I would firstly advise making sure that your software is up to date so that you are availing of all cable types - in particular please ensure that you have the latest Content Pack installed. This is Content pack 3 which can be downloaded as detailed…