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Ground‐Source Heat Pumps

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Ground‐Source Heat Pumps ( ground‐source-heat-pumps )

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3.6.2 Commercial Application We selected a small office building of about 6500 sq. ft. for our analysis. This is a smaller commercial building than average, but will be representative of a large subset of commercial buildings. The size of building will vary slightly due to differences in northern construction methods versus southern construction methods. Table 3‐6 summarizes the characteristics of this representative small office building in the five cities for which load data were available [Huang 1999]8. Figure 3‐10 shows the annual space‐heating and space‐cooling loads for this building. We selected cities in our database that represented the climate of the separate census regions. The five cities for which we have heating and cooling loads are Minneapolis, Chicago, Washington D.C., Los Angeles, and Houston. These matched to an appropriate census region based on climate. Table 3‐6: Characteristics of Representative Commercial Building [Huang 1999] Occupancy • 470 Occupants Locations • Minneapolis; Washington, DC; Chicago; Houston; Los Angelesa a) For cities not included in original load data, we ratioed heating degree days to estimate heating loads, and cooling degree days to estimate cooling loads. Item Description Construction • Small Office • 1 – 2 Stories • Post‐2000 Construction • ~6500 sq. ft. Conditioned Space 8 The load data are based on load profiles developed by Lawrence Berkeley National Lab (Huang 1999). U.S. Department of Energy 43

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