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7.A. - Page 56 of 285 <br />2019 Energy Efficiency Ordinance Cost-effectiveness Study <br />-fable L: Lnaracteristics of the Mixes i'uel vs All-mectric Prototype <br />Characteristic I Mixed Fuel All -Electric <br />Space Heating/Cooling' Gas furnace 80 AFUE <br />Split A/C 14 SEER, 11.7 EER <br />Water Heater 1,2,3,4 1Gas tankless UEF = 0.81 <br />Hot Water Distribution Code minimum. All hot water <br />lines insulated <br />Drain Water Heat <br />Recovery None <br />Efficiency <br />Cooking Gas <br />Clothes Drying Gas <br />Split heat pump 8.2 HSPF, <br />14 SEER, 11.7 EER <br />50gal HPWH UEF = 2.0 <br />SF: located in the garage <br />MF CZ 2,4,6-16: located in living space <br />MF CZ 1,3,5: located in exterior closet <br />Basic compact distribution credit, <br />(CZ 6-8,15) <br />Expanded compact distribution credit, <br />compactness factor = 0.6 <br />(CZ 1-5,9-14,16) <br />CZ 1: unequal flow to shower = 42% <br />CZ 16: equal flow to shower & water <br />heater = 65% <br />None in other Us <br />Electric <br />Electric <br />'Equipment efficiencies are equal to minimum federal appliance efficiency standards. <br />2The multifamily prototype is evaluated with individual water heaters. HPWHs located in the living <br />space do not have ducting for either inlet or exhaust air; CBECC-Res does not have the capability to <br />model ducted HPWHs. <br />3UEF = uniform energy factor. HPWH = heat pump water heater. SF = single family. MF = <br />multifamily. <br />4CBECC-Res applies a 50gal water heater when specifying a storage water heater. Hot water draws <br />differ between the prototypes based on number of bedrooms. <br />2.2 Measure Analysis <br />The California Building Energy Code Compliance simulation tool, CBECC-RES 2019.1.0, was used to evaluate <br />energy impacts using the 2019 Title 24 prescriptive standards as the benchmark, and the 2019 TDV values. TDV <br />is the energy metric used by the Energy Commission since the 2005 Title 24 energy code to evaluate compliance <br />with the Title 24 standards. <br />Using the 2019 baseline as the starting point, prospective energy efficiency measures were identified and <br />modeled in each of the prototypes to determine the projected energy (Therm and kWh) and compliance <br />impacts. A large set of parametric runs were conducted to evaluate various options and develop packages of <br />measures that exceed minimum code performance. The analysis utilizes a parametric tool based on Micropas3 to <br />automate and manage the generation of CBECC-Res input files. This allows for quick evaluation of various <br />efficiency measures across multiple climate zones and prototypes and improves quality control. The batch <br />process functionality of CBECC-Res is utilized to simulate large groups of input files at once. Annual utility costs <br />were calculated using hourly data output from CBECC-Res and electricity and natural gas tariffs for each of the <br />investor owned utilities (IOUs). <br />s Developed by Ken Nittler of Enercomp, Inc. <br />3 0 <br />2019-08-01 <br />308 <br />