See the HVAC User guide for more information.
14.1 Organisation by module & system
In common with other disciplines, HVAC may now be organised in an alternative hierarchy. Please see section 10.1 Organisation by system .
14.2 Splitting
This provides a simple way to split an HVAC system into different sections, using the following operations:
• Define a list of HVAC branches to split
• Create a split plane
• Create markers (split ATTAs) at the positions derived by the intersection of the split plane and the implied tube of HVAC branches in the list
• Split the HVAC system at the markers
The HVAC Designer form to be used is Modify > Split HVAC…
14.3 HVAC Model Integrity Checks
HVAC model integrity checks have been improved to check branch connection alignment, as well as bolt hole and bolt circle diameter on circular ducts.
Three new functions are available from Utilities>Data Consistency and check whether HVAC branch connector components are fitted correctly to the main branch:
• Connected – Aligned with main
• Connected – Central on Main
• Connected – Flush or Central on main
In order to avoid misaligned holes, the orientation of circular ducts can be checked by setting the PZAXIS Y and ROTANG ((360 / DESP[number]) on the connecting ppoints of circular components, where DESP[number] is the number of holes in the flange.
14.4 HVAC Spooling
HVAC can now be split into spools, identified automatically, so that they can be selected and drawn in DRAFT. The HVAC Spool (HSPOOL) element is a collection of HVAC elements that are to be fabricated together as a single spool.
A new HVAC Spooling application, accessed from HVAC Designer Utilities menu, allows them to be created and maintained in the database hierarchy. A property named WKSF is used in the grouping of the HVAC elements into an HSPOOL hierarchy. HSPOOLs are stored in an HSLIST below the HVAC element.
14.5 HVAC Sketches
The system can produce HVAC sketches that include dimensioned, scale drawings of an HVAC spool. These include MTO/Assembly Tables and End Point Tables and are similar to the piping sketches introduced at PDMS 11.6.sp4. The user interface allows the selection of User Defined Templates and Backing Sheets and also enables them to be printed.
The HVAC Sketch form is accessed from DRAFT ADP Create>HVAC Sketches and allows the user to identify the spools from a level in the Design hierarchy. He can also select the drawing template, which may be user-defined, and the database location for storage of the sketches.
14.6 HVAC Catalogue
The sample HVAC catalogue has been extended, notably in the following areas:
• Flat Oval tube representation
• Flexible ductwork representation
• User-defined Joints
• User-defined Stiffeners
It allows for accurate Weight, Centre of Gravity and Material reports.
14.6.1 Flat Oval tube representation
Flat oval implied tube is now shown correctly, rather than as a box. The Surface area calculation is also accurate. The Catalogue TUBE element now has a PAXIS attribute, similar to BOXI, to allow this to work.
Note that HVAC implied tube is intended to be a temporary state in the design sequence, and should be filled with real components for production.
14.6.2 Flexible ductwork representation
The representation of flexible ductwork has been modified to show ribs, which is particularly useful for DRAFT drawings. These ribs are visible in levels 9 to 10:
14.6.3 User-defined Joints
Prior to PDMS 12.0, there was a fixed set of joints, such as FJ25, FJ30, RE etc. (see manual for full list). It is now possible for the user to define the joints for rectangular, circular and flat oval ductwork.
There are 6 new sections (SECT) in the HVAC catalogue database.
/CADCHVACCATA-Joints-RECT /CADCHVACCATA-Joints-CIRC /CADCHVACCATA-Joints-FOVA /CADCHVACCATA-Joints-RECT-Imp /CADCHVACCATA-Joints-CIRC-Imp /CADCHVACCATA-Joints-FOVA-Imp
These sections hold dataset elements (DATASET) for each joint, and each dataset has 7 data elements: …/DESC; …/CODE; …/ALPH; …/NUME; …/HVJA; …/HVJB; …/HVJC
The data in these data elements define a joint and all its relevant information to be used and displayed in the Joints form. The joints provided in the standard product are the same as before but now use this new mechanism so administrators can easily remove or create joints.
A PML object HVACJOINTS is the only place that controls the HVAC Joint storage location and is therefore easily modified.
14.6.4 User-defined Stiffeners
Prior to PDMS 12.0, there was a fixed set of stiffeners, such as 25, 30, 40 etc. It is now possible for the user to define the stiffener sizes and codes.
There is a new section (SECT) in the HVAC catalogue database.
/CADCHVACCATA-Stiffeners
This holds dataset elements (DATASET) for each stiffener, and each dataset has 7 data elements:
…/DESC; …/CODE; …/HVSA; …/HVSB; …/HVSC; …/CONFIG; …/SHAPE
The data in these data elements defines a stiffener and all its relevant information to be used for stiffener creation. For example:
Stiffener 100 $<100x100x10 Angle$> 100 100 10
The codes above are numbers such as 25, 30, 40 etc but a code can be any text such as abc123, xyz789 etc.
14.7 Surface Area and Weight
Surface area and weight are now calculated each time an HVAC component is created or modified. In previous versions, this was done from the Utilities>Surface Area & Weight… menu.
15 Cable Design *12.0.SP5*
AVEVA is a new add-on product for the design of cables, including their routing in cableways and through penetrations. Automatic routing is possible. Output includes cable schedules with routes, cable cutting lists and material take off.
Cable Design was introduced at PDMS 12.0.SP2 and has been continually enhanced in the light of early use on project work. It appears as a Design application but a separate Cable Design license is required for using the new (3D) cable objects in this application.
For details, please refer to the new AVEVA Cable Design User Guide.
Cable diagrams are covered in the AVEVA Diagrams User Guide – as from PDMS 12.0.SP5, they are licensed separately, as part of AVEVA Diagrams.