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7.A. - Page 272 of 285 <br />6.8 List of Relevant Efficiency Measures Explored <br />2019 Nonresidential New Construction Reach Code Cost Effectiveness Study <br />The Reach Code Team started with a potential list of energy efficiency measures proposed for 2022 Title 24 codes and standards enhancement <br />measures, as well as measures from the 2018 International Green Construction Code, which is based on ASHRAE Standard 189.1-2017. The team <br />also developed new measures based on their experience. This original list was over 100 measures long. The measures were filtered based on <br />applicability to the prototypes in this study, ability to model in simulation software, previously demonstrated energy savings potential, and market <br />readiness. The list of 28 measures below represent the list of efficiency measures that meet these criteria and were investigated to some degree. <br />The column to the far right indicates whether the measure was ultimately included in analysis or not. <br />Figure 78. List of Relevant Efficiency Measures Explored <br />Building Component <br />Measure Name <br />Measure Description <br />Notes <br />Include? <br />Water Heating <br />Drain water Heat Recovery <br />Add drain water heat recovery in hotel prototype <br />Requires calculations outside of modeling software. <br />Y <br />Envelope <br />High performance fenestration <br />Improved fenestration SHGC (reduce to 0.22). <br />Y <br />Envelope <br />High SHGC for cold climates <br />Raise prescriptive fenestration SHGC (to 0.45) in cold <br />Y <br />climates where additional heat is beneficial. <br />Envelope <br />Allowable fenestration by <br />Limit amount of fenestration as a function of orientation <br />Y <br />orientation <br />Increase building thermal mass. Thermal mass slows the <br />change in internal temperature of buildings with respect <br />Initial energy modeling results showed marginal <br />Envelope <br />High Thermal Mass Buildings <br />to the outdoor temperature, allowing the peak cooling <br />cooling savings, negative heating savings. <br />N <br />load during summer to be pushed to the evening, <br />resulting in lower overall cooling loads. <br />Increases the insulation requirement for opaque <br />Initial energy modeling results showed marginal <br />Envelope <br />Opaque Insulation <br />envelopes (i.e., roof and above -grade wall). <br />energy savings at significant costs which would not <br />N <br />meet c/e criteria. <br />Initial energy modeling results showed only marginal <br />Envelope <br />Triple pane windows <br />U -factor of 0.20 for all windows <br />energy savings and, in some cases, increased energy <br />N <br />use. <br />97 <br />2019-07-25 <br />524 <br />