Net ZEB Design Processes and Tools - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 233

objectives. Finally, the IDP in conjunction with three innovative project
delivery methods, including construction management at-risk (CM@R),
design-build (DB), and IPD, were described.
The second major section of this chapter focused on modeling specific
building phenomena and went into more depth on appropriate model
resolution for different building systems and different design stages. The
advantages and disadvantages of coupling different building system models
were discussed at length. While an integrated model that includes all major
energy-related systems is highly recommended to verify that net-zero
energy(and/orotherenergyandcomfort-relatedtargets)ismet,thissection
advocated cautiously using simpler, standalone tools during early-design
stages. Though designers may be tempted to jump to complex models using
powerful and detailed simulation tools, such an approach is often so
time-consuming that very few design options can be explored and much
of the output of the tools comes too late to effectively influence design.
Finally, numerous techniques for using BPS tools and interpreting results
are suggested, including multidimensional parametric analysis and solar
design days.
The next chapter discusses formal optimization of Net ZEBs. Optimization
should not be seen as a competing approach to traditional design methods
covered in the current chapter, but rather as a technique that can be
introduced at any stage to support the overall design process.
Notes
1. Stakeholders are comprised of three primary groups: the client, which
includes the owner and end users; the design team, which includes the
architect, the engineers, and their consultants; and the builder, which
includes all the trades. On large or public projects, community members
can also be considered stakeholders.
2. A design charrette is a meeting that facilitates collaborative design and
idea-sharing involving expert designers from multiple disciplines
(architects, mechanical engineers, electrical engineers, renewable energy
professionals, landscape architects). They usually range between one and
five days in length and are sometimes spaced out to allow designers to
return to work individually to further develop ideas before convening