Heating,
Ventilation & Air Conditioning (HVAC) in the building sector involve a lot
of manpower from designing, operation & maintenance at various stages like system design, load estimate, coordination, scheduling, energy simulation, and
also for facility operations and maintenance. The diverse stages entail
different expertise for executing the activities, leading to many
coordination problems.
Using BIM at the pre-construction stage of the project
facilitates engineers and designers to make improved decisions. All activities associated
with project completion can be made easily with 2D, 3D, 4D, 5D, 6D & 7D BIM
in a single module. The BIM-enabled solution helps to obtain energy
conservation, maintenance & operation of the HVAC system.
· Multidisciplinary Collaboration
with Stakeholders, Reducing Rework
All project stakeholders need to collaborate to work on a project starting from the stage of conceptual design
to the operation & maintenance for streamlining the process of construction
as per time, cost & quality. BIM helps in pre-planning the mechanical HVAC
process and exactly comprehending design data, by providing information along
with visuals in a common data environment. To analyze design & showcase information on multi-dimensional aspects, the BIM model shows
all the necessary dimensions from the conceptual stage of the design to operations&
maintenance. The design of an HVAC made in CAD can be imported in Revit BIM,
identifying different dimensions concerning the design.
· Provision for Making Heat Load Estimation with 2D BIM
BIM acts as a single point of
reference for information & operational activities having manifold
dimensions wherein the 2nd Dimension of the tool in the project
provides the provision for making heat load assessments, duct sizing, pipe
sizing, and pipe design. Heat load calculations can be executed comprehensively if
the specific building properties are provided like the floors, walls, ceiling,
slab, sort of building typology, location & activity in the building,
lighting & equipment load, and the total number of people. BIM can
automatically take the temperature of the dry & wet bulbs and humidity by
specifying the location of the buildings. When the essential heating and cooling loads are recognized, the desired
ducting can be designed. Usually, the duct design is a hectic job with the
sizing of the duct at different areas for delivering desired conditioning.
However, BIM provides the duct sizing as per the calculated CFM & FPM, by entering
the value of FPM and mechanically calculating frictional losses in the duct
& varying FPM in the branch duct, and providing the size of the branch duct.
· 360 Degree
Visualization with 3D BIM, Communicating Design Intent
All
engineering components of the buildings along with structural and architectural
ones can be visualized with BIM
in 360 degrees in a different spectrum like the
wireframe and rendered. You can get a walk-through of the entire building
along with the Mechanical (HVAC), Plumbing Electrical, Structural &
Architectural components for detecting the building clashes concerning the
services and between the services. The BIM model can be imported to NavisWorks
- another plug-in for Revit to perform clash
detection and generate clash reports for the entire building simultaneously. A
complete HVAC design of a building can simplify the visual understanding of the
duct network and its crucial components.
· Construction Sequencing with 4D BIM Model for Optimized
Operation
Construction scheduling with 4D
BIM facilitates in estimating the time
for the installation of AC service for the project from designing, and testing to
commissioning when the BIM Model is fed with information about the activities
of the work to be done. BIM can easily calculate the non-working days
automatically based on calendar days. The report can be plugged-in in NavisWorks
and the work schedule to be executed can be prepared.
·
Accurate Cost Estimation with 5D BIM, Enabling Sustainable
Construction
The BIM model can store a lot of information
for execution but the most essential one is budgeting. To estimate the project
budget, the 5D
BIM cost estimation has to be made in an accurate way for
the selected materials and products. This generates the cost of the desired
building system for the piping and ducting.
· Thermal Performance of the Building with 6D BIM, Reducing Energy Consumption
The
6th dimension presents the data about the thermal performance of the building. In
a conventional air-conditioned building, the AC system usually consumes the
maximum power. Hence by taking a bit of care, you can reduce energy
consumption, leading to substantial savings in the long run. The primary objective of the building energy simulation is to
gauge the monthly & annual energy consumption of the HVAC system in terms of thermal comfort as well as indoor air
quality.
· Operation &
Maintenance with 7D BIM, Optimizing Asset Management
Another
important dimension is how the BIM Model can play a vital role in
maintaining the HVAC system of the building using ARCHIBUS & Autodesk
technology. Through ARCHIBUS-Revit integration, one can certainly maintain and
retrieve information about HVAC together with electrical components, such as
electrical circuits, panels, lighting, control systems, receptacles, and more.
ARCHIBUS can create a comprehensive electrical inventory of the HVAC systems of
the facility with pre-defined module standards with key information like the
Model number, heat load, power requirements, and vendor information. You can
check the circuit & panel loads and calculate the floor, building, and room
from the built-in report system. Further, overloaded circuits and other probable glitches
can be prevented during the operation level.
· Mapping HVAC Parameters with Revit BIM
Model
A Revit model
contains a wide array of equipment from categories like mechanical, electrical,
and much more. Individual equipment asset contains a substantial amount of
parametric data built into their system. Smart Client extension of Revit is
designed for mapping and capturing data through a synchronization process whereas Revit parameters can be mapped to ARCHIBUS fields. The process can
be executed by a BIM specialist much ahead of time in a planned way to capture
FM-appropriate data and ensure the proper use of the system.
The Crux of the Matter:
Communication
can be made easy through the mobile phone, transforming the phase of
technology. Similarly, transformation can
be seen in project production while using the BIM collaborative
process, providing a
framework for the stakeholders’ interaction with the drive of streamlining
administration, enhancing design, setting up data-transfer guidelines, and increasing
quality while reducing the cost of project production. To know more about BIM Services for your projects, call
the BIM Modelers of Tejjy Inc. at 202-465-4830 or info@tejjy.com.
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