Advanced Energy Engineering Technology Modeling Building Energy Systems Session 5: Energy modeling today

Topics covered in this class session: The current state of energy modeling Current trends and drivers The economics of building energy

Current state of energy modeling How & when energy modeling is used (RMIpg31) Customer demographics and their understanding of the modeling process (RMIpg33) Modeling tasks to inform design (RMIpg35) Modeling an existing building

How and When Energy Modeling is Used ( from RMI ) to inform early design decisions to refine design and controls throughout the design process to predict energy consumption and costs of building to provide inputs for a life cycle cost analysis to inform retrofits of existing buildings (requires calibrated model) to verify building performance post-occupancy (requires calibrated model) to determine performance compared to a given baseline (i.e. ASHRAE’s Performance Rating Method, or a specific target for Energy Use Intensity) o to meet performance goals set by the owner or design team o to determine compliance with an energy code, tax credit, regulation, or piece of legislation, or o to determine compliance with, or points for, a green building rating system

What are the trends and drivers (RMIpg89) for energy modeling? Trends in the building industry Rising energy costs Growing market for high performance buildings and commercial space Rising environmental awareness among building owners

Direct drivers of energy modeling Energy codes and standards (RMIpg89) Federal legislation and regulations (RMIpg91) Green building ratings and labels (RMIpg93) Participation in utility programs (RMIpg94) Government funding and tax incentives (RMIpg95) Client-driven design assistance (RMIpg96) Performance guarantees (RMIpg96) Response to scientific research (RMIpg97)

The economics of building energy How money drives building design and energy load Various utility rate structures Energy efficiency measures as payback investments Life-cycle costing Meeting carbon reduction goals Market value of green building

LAB 1 Review Video Demonstration Organization into teams could be done in several ways. If student introductions reveal a cross section of experience and skills, the teams might be formed to include diverse talents. If students are similar in experience, numbering off or grouping by seating proximity could be done. Another idea is to list the types of buildings available and let students pick their own teams.

LAB 1 Continued – Instructor’s intro Student introductions—Brief statements of professional background and goals that include the modeling course Introduction to the project: creating a collaborative lab eQUEST model for an existing building – Requirements for student assignments » Completed model of existing building from each student » Team recommendations report and presentation – Assignment of buildings and teams – Overview of team responsibilities and expectations – Lab activities Students download eQUEST Schematic Design wizard software and create individual files – Enter basic project info Meet with team and discuss breakdown of responsibilities Student teams look at building plans or building descriptions and discuss Each team responsible for contacting the building owner to schedule the first site visit at the next lab session