To determine resource savings, the per-unit estimates in the algorithms will be multiplied by the number of freezers. The number of freezers will be determined using market assessments and market tracking. If the volume and configuration of the freezer is known, the federal minimum efficiency and ENERGY STAR qualified annual energy consumption are determined using Table 249. models’ The energy and demand savings are given by the following algorithms: ENERGY STAR Freezer =kWhbase kWhEE ΔkWh – =(kWhbase- kWhEE)/Hours * CF ΔkWpeak Definition of Terms kWhbase = Annual energy consumption of baseline unit kWhEE = Annual energy consumption of ENERGY STAR qualified unit Hours =Hours of operation per year CF =Demand coincidence factor Where: CF = 1 Hours =8,760 Freezer energy use is characterized by configuration (upright, chest or compact), volume and whether defrost is manual or automatic and whether. If this information is known, annual energy usage of the ENERGY STAR model and federal minimum efficiency standard model can be calculated using Table 249. The term in the equations refers to which is “AV” “Adjusted Volume,” AV = 1.73 x Total Volume. Note this table is also provided for planning purposes to compare to the changing federal standards detailed in Table 251. Federal Standard and ENERGY STAR Freezers Maximum Annual Energy Table 249: Consumption if Configuration and Volume Known Federal Standard ENERGY STAR Freezer Category Maximim Usage in Maximum Energy kWh/year Usage in kWh/year Upright with manual defrost 7.55*AV+258.3 < 6.795*AV + 232.47 Upright with automatic defrost 12.43*AV+326.1 < 11.187*AV + 293.49 Chest Freezer 9.88*AV+143.7 < 8.892*AV + 129.33 Compact Upright with manual defrost 9.78*AV+250.8 < 7.824*AV + 200.64 Compact Upright with automatic defrost 11.40*AV+391 < 9.120*AV + 312.8
To determine resource savings, the per-unit estimates in the algorithms will be multiplied by the number of freezers. The number of freezers will be determined using market assessments and market tracking. If the volume and configuration of the freezer is known, the federal minimum efficiency and ENERGY STAR qualified models’ annual energy consumption are determined using Table 249. The energy and demand savings are given by the following algorithms: ENERGY STAR Freezer ΔkWh =kWhbase – kWhEE ΔkWpeak =(kWhbase- kWhEE)/Hours * CF Definition of Terms kWhbase = Annual energy consumption of baseline unit kWhEE = Annual energy consumption of ENERGY STAR qualified unit Hours =Hours of operation per year CF =Demand coincidence factor Where: CF = 1 Hours =8,760 Freezer energy use is characterized by configuration (upright, chest or compact), volume and whether defrost is manual or automatic and whether. If this information is known, annual energy usage of the ENERGY STAR model and federal minimum efficiency standard model can be calculated using Table 249. The term “AV” in the equations refers to “Adjusted Volume,” which is AV = 1.73 x Total Volume. Note this table is also provided for planning purposes to compare to the changing federal standards detailed in Table 251. Table 249: Federal Standard and ENERGY STAR Freezers Maximum Annual Energy Consumption if Configuration and Volume Known Freezer Category Federal Standard Maximim Usage in kWh/year ENERGY STAR Maximum Energy Usage in kWh/year Upright with manual defrost 7.55*AV+258.3 < 6.795*AV + 232.47 Upright with automatic defrost 12.43*AV+326.1 < 11.187*AV + 293.49 Chest Freezer 9.88*AV+143.7 < 8.892*AV + 129.33 Compact Upright with manual defrost 9.78*AV+250.8 < 7.824*AV + 200.64 Compact Upright with automatic defrost 11.40*AV+391 < 9.120*AV + 312.8
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