UT Zero-Energy House Divide University of Tennessee, Knoxville Arc 572 I Spring 2008

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1 architecture comfort zone market viability

2 architecture comfort zone market viability

3 architecture comfort zone market viability

4 architecture comfort zone market viability

5 architecture comfort zone market viability

6 architecture comfort zone market viability Divide Land/Water

7 architecture comfort zone market viability Expanded Threshold

8 architecture comfort zone market viability Bar/Divide

9 architecture comfort zone market viability Living Expansion

10 architecture comfort zone market viability Rotation

11 architecture comfort zone market viability Difference/Path

12 architecture comfort zone market viability Service/Mechanical

13 architecture comfort zone market viability Roof Plan

14 architecture comfort zone market viability

15 architecture comfort zone market viability

16 architecture comfort zone market viability Floor Plan

17 architecture comfort zone market viability SouthWest Elevation

18 architecture comfort zone market viability

19 architecture comfort zone market viability NorthEast Elevation

20 architecture comfort zone market viability

21 architecture comfort zone market viability

22 architecture comfort zone market viability

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24 architecture comfort zone market viability

25 architecture comfort zone market viability Winter Shades Open for Heat Gain Shading Strategy Winter Evening Shades Closed for Privacy Summer Day Shades Closed to Prevent Heat Gain Knoxille: 36 degrees Latitiude Building Orientation: -45 degrees SW orientation, +45 degrees SE Orientation The temperature differences between solar equivalent months (May/July, April/August) make permanent shading undesirable for all but the longest days in June. To allow for solar gain in March/April/May but exclude it in the hotter months of July/August/September there needs to be a operable shading system. The separate horizontal and vertical shades allow for fine adjustment for these varying temperature conditions. In addition, because of the -45 degree SW orientation, the sun is quite low and horizontal shading would need to approach 6 meters to properly shade that side. By using a pull down vertical shade, the low sun can be avoided for both heat gain and glare situations.

26 architecture comfort zone market viability Daylighting Sunlight penetrates the living space but also enters through the back windows and the clearstory above the bar, illuminating the ceiling light.

27 architecture comfort zone market viability View to Kitchen w/ Pull-out Island Flexible Living Space / Exterior Connection

28 architecture comfort zone market viability Winter loads balance well.

29 architecture comfort zone market viability Summer loads require some cooling. The amount of glazing is clearly a factor in solar gain through the day. Less glazing or more complete shading may be required.

30 architecture comfort zone market viability In the extreme winter, early morning heating is required. A larger thermal mass might help this situation. In the extreme summer day, significant cooling is required. Although the same issues of glazing are present here, extreme summer days in Knoxville do not allow for significant night cooling and will almost always require cooling.

31 architecture comfort zone market viability In the extreme winter, early morning heating is required. A larger thermal mass might elp this situation. In the extreme summer day, significant cooling is required. Although the same issues of glazing are present here, extreme summer days in Knoxville do not allow for significant night cooling and will almost always require cooling.

32 architecture comfort zone market viability Water Supply and Usage Comparison 3, Gallons / sf floor 2, , , , Unused Storage Capacity Stored Water Catchment Yield Demand Months Catchment area = 1450 sf Cistern Size = 2500 gal Calculations assume a.2 precipitation probability and recycling

33 Station Identification City: State: Latitude: Longitude: Elevation: PV System Specifications DC Rating: DC to AC Derate Factor: AC Rating: Array Type: Knoxville TN N W 299 m 4.00 kw kw 1-Axis Tracking Array Tilt: 35.8 Array Azimuth: Energy Specifications Cost of Electricity: 6.9 /kwh M on th Solar Radiati on (kwh/m 2 / day) Results AC Energy (kwh) architecture comfort zone market viability Energy Value ($) With 6 square meters of pv area, Divide can produce 36kW per day. Rows can easily be added in 1.5 sm increments.

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40 architecture comfort zone market viability DOUBLE UNIT

41 architecture comfort zone market viability DUPLEX

42 architecture comfort zone market viability MULTI-UNIT

43 architecture comfort zone market viability MULTI-UNIT