z_Do Not Advance_What is the impact of Architectural and HVAC System Design on Building Energy Use, Carbon Emissions and Operational Costs?

PROJECT INFORMATION
Graphic Name:

z_Do Not Advance_What is the impact of Architectural and HVAC System Design on Building Energy Use, Carbon Emissions and Operational Costs?

Submitted By:

Liam Buckley

Firm Name:

Other contributors or acknowledgements (optional):

What tools did you use to create the graphic?
  • IES-VE
What kind of graphic is this?

OPTION 1 – A Single Graphic

Primary Inputs:

The input is one building design strategy (i.e. one energy model simulation file).

Primary Outputs:

There are ten output/metrics shown in the graphic. 1. Site Energy Use Intensity; 2. Source Energy Use Intensity; 3. Carbon Emissions; 4. 3D model snapshot image; 5. EUI donut chart, with renewable energy contribution; 6. Monthly energy dashboard & fuels; 7. Fuels to Energy Sankey; 8. Energy Costs; 9. Peak Demands; 10. Top 3 Contributors to peak electricity demand, peak fossil fuel demand and renewable energy production.

Graphic Information

What is the graphic showing?

The graphic is a Building Energy Model Output Report for one design strategy. 1. Top section: General model information (weather file, simulation file, conditioned floor area, etc.). 2. Annual Energy Consumption (kBtu/ft2/year) & CO2 kgCO2/ft2/year: This section shows Site Energy Use Intensity, Source Energy Use Intensity, CO2 emissions for each energy end-use. Each energy end-use is color-coded, and those colors are repeated throughout the remainder of the report. 3. Project Viewer – 3D model: Snapshot image of 3D model & surrounding buildings. 4. Site Energy Use Intensity: Donut chart with each energy end-use on the outer-ring. The inner ring shows the renewable energy contribution (PV, Wind, Solar-Thermal, etc.). The center of the donut is the Site EUI metric in kBtu/ft2 (or kWh/m2). 5. Site Energy Dashboard: Stacked bar chart of each energy end-use on a monthly basis. Fuels breakdown for fossil fuels, electricity and onsite energy generation. 6. Site Energy Flows – Sankey Diagram: Fuels to Energy end-uses. 7. Annual Fuel Costs & Peak Demands: Peak demand for electricity (kW) & fossil fuels (kBtu/h); Peak dates & times for electricity (kW) & fossil fuels; annual energy costs of electricity & fossil fuels. 8. Top 3 Contributors to peak electricity demand, peak fossil fuel demand and renewable energy production.

How did you make the graphic?

This is a new auto-generated report available in IESVE 2019. The report intends to communicate the performance of a building energy model internationally, by including a range of performance metrics which often vary by region, building rating system or Owner’s Project Requirements (OPR).

What is the graphic showing?

The graphic is a Building Energy Model Output Report for one design strategy. 1. Top section: General model information (weather file, simulation file, conditioned floor area, etc.). 2. Annual Energy Consumption (kBtu/ft2/year) & CO2 kgCO2/ft2/year: This section shows Site Energy Use Intensity, Source Energy Use Intensity, CO2 emissions for each energy end-use. Each energy end-use is color-coded, and those colors are repeated throughout the remainder of the report. 3. Project Viewer – 3D model: Snapshot image of 3D model & surrounding buildings. 4. Site Energy Use Intensity: Donut chart with each energy end-use on the outer-ring. The inner ring shows the renewable energy contribution (PV, Wind, Solar-Thermal, etc.). The center of the donut is the Site EUI metric in kBtu/ft2 (or kWh/m2). 5. Site Energy Dashboard: Stacked bar chart of each energy end-use on a monthly basis. Fuels breakdown for fossil fuels, electricity and onsite energy generation. 6. Site Energy Flows – Sankey Diagram: Fuels to Energy end-uses. 7. Annual Fuel Costs & Peak Demands: Peak demand for electricity (kW) & fossil fuels (kBtu/h); Peak dates & times for electricity (kW) & fossil fuels; annual energy costs of electricity & fossil fuels. 8. Top 3 Contributors to peak electricity demand, peak fossil fuel demand and renewable energy production.

What specific investigation questions led to the production of this graphic? List them:

1. Practitioner feedback from IESVE users in North America, Europe, Australia and Asia. 2. Various international energy/carbon metrics for building codes, standards and rating systems; i.e. how to report them all. 3. ASHRAE 209-2018 Section 5.7.3.3: Output Data Reporting.

How does this graphic fit into the larger design investigations and what did you learn from producing the graphic?

1. The graphic report applies to all phases of design from making pre-SD decisions, through CDs and even post-occupancy M+V. 2. The graphic speaks to international building performance design, with the broad range of metrics shown (carbon, costs, energy, etc.). Some design options may result in reduced energy cost, but also adversely result in increased carbon emissions. This output report captures more holistic design implications. 3. The lower section of “Top 3 Contributors” informs the design team of which energy end uses to target for demand side management (DSM) or peak demand reduction; and at what times each energy end-use is contributing to the peak demand. i.e. considerations for pre-heating or pre-cooling options will be obvious by the nature of the graph’s shape. 4. The Sankey chart easily demonstrates the major contributors to fuel usage, should that be the primary design concern. 5. Monthly energy-end use demonstrates when energy may be a cause for concern; e.g. summertime heating if a VAV-Reheat system has been selected. As for what we learned from producing the graphic: 1. Valuable practitioner feedback 2. VE-Scripts (Python libraries).

What was successful and/or unique about the graphic in how it communicates information?

• Successful: 1. The development specification required all of metrics to be displayed on one page. There were occasions where this was challenged but the desired solution was accomplished. 2. The graphic can be generated from a SD model using simplified idealized loads or a detailed CD/Compliance model using detailed HVAC systems. 3. IESVE User feedback was been very positive. We have only been criticized for not having it sooner. • Unique: 1. The automated output report has been shipped to thousands of IESVE users internationally and is available to everyone. 2. The range of highly visual and informative performance metrics are shown on one page. 3. The Sankey chart and ‘Top 3 Contributors’ sections aims to influence design priorities.

What would you have done differently with the graphic if you had more time/fee?

We recognize there are larger ranges of performance metrics being used in industry and it was difficult to choose which metrics to exclude from this report. We have tried to portray the application of other metrics, when appropriate: https://www.iesve.com/discoveries/article/7725/ten-key-building-energy-metrics

Is there anything else you'd like to mention? This can be in terms of your graphic ouput, this form, or suggestions for improving the submission process in general?

You may add my email on the website so people can follow up with me directly. Liam.Buckley@iesve.com For the question: "What tools did you use to create the graphic? (select all that apply and be sure to include pre and post processing)?" ... it did not allow us to enter the name of the tool: IESVE 2019

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