Achieving Very High Efficiency and Net Zero Energy in an Existing Home in a Hot-Humid Climate: Long-Term Utility and Monitoring Data (Revised) Page: 34 of 111
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U.S. DEPARTMENT OF Energy Efficiency &
ENERGY Renewable EnergyImpact of Coil Cleaning
25 cubic foot side by side refrigerator.0
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Coil Cleaning
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Julian Date: September 17 - 28, 2010271
Figure 13. Kitchen refrigerator power before and after coil cleaning on September 22, 2010.
Orange line is average power in days before cleaning (182 W); green line is average power after
(165 W). Energy reduction is about 10%, but daily power use (3.96 kWh) is far above rated
performance for the refrigerator (2.12 kWh/day) later replaced in January 2011.
10.1 New Kitchen Refrigerator
The side-by-side kitchen refrigerator was replaced with a General Electric (GE) Profile 22.2 ft3
French Door Bottom Freezer Refrigerator (PFSS2MJY) on January 8, 2011 (Figure 14). The unit
has an estimated annual energy use of 463 kWh/year (1.3 kWh/day). Figures 14 and 15 show the
unit and Energy Guide label, respectively.
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Parker, D. & Sherwin, J. Achieving Very High Efficiency and Net Zero Energy in an Existing Home in a Hot-Humid Climate: Long-Term Utility and Monitoring Data (Revised), report, October 1, 2012; Golden, Colorado. (https://digital.library.unt.edu/ark:/67531/metadc837915/m1/34/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.