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Modeling Multifamily Heating Energy Use

Modeling Multifamily Heating Energy Use. Can SEEM be used, or do we need to use a multi-zone model? Regional Technical Forum January 17, 2011. Background. MF Weatherization UES is “out-of-compliance” due to lack of model calibration

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Modeling Multifamily Heating Energy Use

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  1. Modeling Multifamily Heating Energy Use Can SEEM be used, or do we need to use a multi-zone model? Regional Technical Forum January 17, 2011

  2. Background • MF Weatherization UES is “out-of-compliance” due to lack of model calibration • In the RTF’s “Multifamily Weatherization UES Scoping Study (Phase 1),” SBW identified 5 studies that would provide useful data for calibration • See link to memo on MF Weatherization UES measure page • In “Phase 2,” the RTF will hire a contractor to use those 5 studies to perform a calibration exercise. • The SOW should specify the preferred model. • RTF-staff preference = SEEM • At the December 2011 RTF meeting, there was concern regarding using SEEM for multifamily buildings

  3. Background (2) • Definition: Multifamily • More than 4 units; and • 3 floors or less above grade • Prototypes • Townhouse on Crawlspace • 12 units • 3 stories • 1500 ft2 per unit • Townhouse on Slab (same specs) • Apartment Building (Double-loaded corridor) • 24 units • 3 stories • 1000 ft2 per unit • Measures • Insulation (Attic, Floor, Walls) • Windows

  4. Use SEEM or not? • Benefits of using SEEM • Consistent with other RTF work • Simple • Easily documentable • Negatives of using SEEM • Doesn’t allow for multi-zone modeling

  5. Discussion • What would we expect to get from multi-zone modeling that single-zone modeling wouldn’t provide? • Will ability to model individual apartments allow better savings estimates? • Common area heating setpoint & infiltration rates • Vary heating setpoint across units to account for different behavior (including vacancies) • What data would we need for model inputs?

  6. What’s Needed from RTF… • Clear direction regarding modeling software to use for the Multifamily Weatherization UES measures and attempted calibration exercise.

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