![]() SARS-CoV-2 viral particles spread between people more readily indoors than outdoors. In addition to ventilation improvements, the layered approach includes physical distancing, wearing face masks, hand hygiene, and vaccination. This approach includes using multiple mitigation strategies, including improvements to building ventilation, to reduce the spread of disease and lower the risk of exposure. Schneider Electric adapted parts of Slipstream's BOE tool to create its own Large Office Building Indoor Air Quality Calculator.CDC recommends a layered approach to reduce exposures to SARS-CoV-2, the virus that causes COVID-19. Through the combination of all of these strategies, the Riverview Elementary School is expected to achieve 1,386 MBTU in annual energy usage. Roof: added rigid insulation, bringing the overall R-value to 45 from 30.Glazing: specified 1.5" thick, triple-pane insulated glazing with low-e coatings for windows and upgraded curtainwall to 2" thick triple-pane glazing. ![]() Walls: replaced batt insulation with a continuous layer of 6" spray-applied closed cell polyurethane foam insulation.The calculator was used by the design team at NAC Architecture to perform quick sanity checks on their envelope upgrades. The school district also installed a 100 kW photovoltaic array. This 82,810 square foot new construction project aggressively pursued a sustainable design.įor example, the lighting efficiency measures included high efficiency fluorescent fixtures, daylighting controls, and LED site lighting.Ī ground loop heat exchanger system coupled with heat recovery coils satisfied the school's heating and cooling requirements. NAC Architecture used the BOE tool to further verify the efficiency upgrades to the Riverview Elementary School in the Snohomish School District of western Washington. Riverview Elementary School (Snohomish, WA) If you used the calculator on a project, please let us know by emailing Scott Schuetter. Peak supply fan energy consumption is 0.000351.People sensible and latent loads are both 250.There is no partial economizing with mechanical cooling assistance. Airside economizer operates only when full cooling load can be met.There is no unoccupied thermostat setback schedule.Interior relative humidity of 50% is maintained year-round.There is no energy calculated for domestic hot water heating.There is no pump energy calculated for hot water hydronic heating.Heating is through a natural gas hot water boiler.Supply fan system is variable air volume using variable frequency drives.Cooling is through air-cooled direct expansion.HVAC system is rooftop VAV with hydronic reheat coils.Window area is equally distributed on North, South, East, or West exposures.Each wall faces directly North, South, East, or West.Diffuse radiation on windows is assumed equal to hourly horizontal diffuse radiation from local weather data.Direct radiation is based on hourly solar angles and hourly direct normal radiation from local weather data.Infiltration is assumed zero during occupied times due to fan pressurization.Envelope solar gain is not considered, except for windows.Envelope convective heat transfer is not considered.There are no process loads in the building other than plug loads.There is no exterior lighting considered.Lights and plug loads are assumed to be at 1/20 power density during unoccupied times.Occupied hours first fill weekdays symmetrically around noon, and then fill weekends.The building is treated as a single thermal zone.User can easily update climate to their location. Default climate is Madison, Wisconsin using hourly TMY3 weather data.The building is an office, 12' floor-to-roof, with square footprint.You can easily adapt the tool to any of more than 2,100 locations worldwide. The tool is formatted to print onto one sheet. If you wish to capture your calculations, use Excel's print function.Click the reset defaults button for the original settings. Use the tool by moving the slider bars to change your settings.If you get a run-time error, hit END, then you'll be able to interact with the slider bars. Save the file to your computer, open it, and Enable Editing, if prompted.It's very difficult to get a feel for energy efficiency among the complicated interactions. When it comes to building energy consumption, nearly everything affects everything. How much CO2 will this building produce annually?.Does it cost a lot to keep my building open longer?.Does lighting efficiency also affect heating energy?.What happens to cooling costs if I double my roof insulation?.
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