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We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, per @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, per @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, per @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, per similar to @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, similar to @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, similar to @Lisang 's publications?

We are trying to quantify energy cost savings with air sealing measures (7ACH down to 5ACH per unit, for now assuming all leakage to the outside) in a mid rise multifamily building using a whole building modeling approach. For the zoneinfiltration:DesignFlowRate object in EnergyPlus, the EnergyPlus IO manual lists I_design for two scenarios: 1. 7.5mph value and using Blast coefficients and 2. 10mph value and using DOE2 coefficients.

According to an earlier post on Getting Infiltration Correct, I presumed I_design is design value at 4pa rather than at 7.5 or 10mph wind speed. And I used the DOE2 coefficients 0.224 on wind speed difference, my predicted savings level is 4-5 times more savings on a per unit basis than savings level predicted by BEopt or Remrate. Is there any recommendations to align the savings number? Are there better coefficients to use for multifamily buildings as well, similar to @Lisang 's publications?