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7.A. - Page 236 of 285 2019 Nonresidential New Construction Reach Code Cost Effectiveness Study 6.2 Lighting Efficiency Measures Figure 45 details the applicability and impact of each lighting efficiency measure by prototype and space function and includes the resulting LPD that is modeled as the proposed by building type and by space function. Figure 45. Impact of Li htin Measures on Proposed LPDs by Space Function 6.3 Drain Water Heat Recovery Measure Analysis To support potential DWHR savings in the Small Hotel prototype, the Reach Code Team modeled the drain water heat recovery measure in CBECC-Res 2019 in the all -electric and mixed fuel 6,960 ft2 prototype residential buildings. The Reach Code Team assumed one heat recovery device for every three showers assuming unequal flow to the shower. Based on specifications from three different drain water heat recovery device manufacturers for device effectiveness in hotel applications, the team assumed a heat recovery efficiency of 50 percent. The Reach Code Team modeled mixed fuel and all -electric residential prototype buildings both with and without heat recovery in each climate zone. Based on these model results, the Reach Code Team determined the percentage savings of domestic water heating energy in terms of gas, electricity, and TDV for mixed fuel and all -electric, in each climate zone. The Reach Code Team then applied the savings 61 RE 2019-07-25 a:: Modeled Baseline Impact Proposed Interior Occupant Lighting Daylight Sensing in LPD Reduced Institutional Dimming Open Office LPD Space Function (W/ft2) LPD Tuning Plus OFF Plan (W/ft2) Medium Office Office Area (Open plan office) - Interior 0.65 15% 10% - 17% 0.429 Office Area (Open plan office) - Perimeter 0.65 15% 5% 10% 30% 0.368 Medium Retail Commercial/Industrial Storage (Warehouse) 0.45 10% 5% - - 0.386 Main Entry Lobby 0.85 10% 5% - 0.729 Retail Sales Area (Retail Merchandise Sales) 0.95 5% 5% - 0.857 Small Hotel Commercial/Industrial Storage (Warehouse) 0.45 10% 5% - - 0.386 Convention, Conference, Multipurpose, and Meeting 0.85 10% 5% - - 0.729 Corridor Area 0.60 10% 5% - - 0.514 Exercise/Fitness Center and Gymnasium Areas 0.50 10% - - - 0.450 Laundry Area 0.45 10% - - - 0.405 Lounge, Breakroom, or Waiting Area 0.65 10% 5% - - 0.557 Mechanical 0.40 10% - - - 0.360 Office Area (>250 W) 0.65 10% 5% - - 0.557 6.3 Drain Water Heat Recovery Measure Analysis To support potential DWHR savings in the Small Hotel prototype, the Reach Code Team modeled the drain water heat recovery measure in CBECC-Res 2019 in the all -electric and mixed fuel 6,960 ft2 prototype residential buildings. The Reach Code Team assumed one heat recovery device for every three showers assuming unequal flow to the shower. Based on specifications from three different drain water heat recovery device manufacturers for device effectiveness in hotel applications, the team assumed a heat recovery efficiency of 50 percent. The Reach Code Team modeled mixed fuel and all -electric residential prototype buildings both with and without heat recovery in each climate zone. Based on these model results, the Reach Code Team determined the percentage savings of domestic water heating energy in terms of gas, electricity, and TDV for mixed fuel and all -electric, in each climate zone. The Reach Code Team then applied the savings 61 RE 2019-07-25 a::