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2005-06 Seminars
Towards Systemic
Analysis of Building Energy Systems
Chris Marnay
Berkeley Lab
Abstract
Currently building energy systems are designed and
built almost in isolation one from another. The heat
and electricity supplies, for example, are not
obviously interconnected, except to the extent that
electricity it needed to drive pumps and fans, etc.
While not really a disruptive technology,
small-scale (< 1-2 MW electric) combined heat and
power for buildings necessitates a rethink of the
traditional approach. In this work, a systemic model
of building energy use is developed and
demonstrated. The Distributed Energy Resources
Customer Adoption Model (DER-CAM) is a pure cost
minimizing approach that minimizes the total energy
bill of a building over a test period, typically an
historic year. Because occupancy is low in
commercial buildings, the economics of
self-generation is often not compelling and cooling
which is endogenous to electricity use is typically
the most lucrative load to serve by CHP, solving
building energy systems to find optimal on-site
generation, heat recovery, and cooling equipment
proves very challenging.
Slides
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