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HVAC Project ME 414 – Thermal Fluid System Design

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Presentation on theme: "HVAC Project ME 414 – Thermal Fluid System Design"— Presentation transcript:

1 HVAC Project ME 414 – Thermal Fluid System Design
HVAC Project ME 414 – Thermal Fluid System Design Professor John Toksoy Final Project Team Members: Kaela Hlaulani Prince Bedell William Broaddus Derek Vleck Trever Zike Seth Simonson

2 Goals Calculate HDD Furnace on time Number of on-off cycles Heat Loss
Correlate Data

3 HDD & Furnace On Time Date HDD Calculated HDD Actual % Error
# of On-Off Cycles Calculated # of on-off Cycles Seen on Graph Difference Btwn Calc and Graph 1/22 31.93 30.0 6.04% 2.24 29 1/28 49.39 48.0 2.81% 2.04 51 1/29 50.79 50.0 1.56% 2.65 59 2/3 37.98 37.0 2.58% 1.42 33 2/4 35.68 35.0 1.91% 1.72 48 2/5 37.39 32.0 14.4% 1.79 57 2/6 46.11 41.0 11.1% 1.43 50

4 HDD Calculated Vs. HDD Published

5 Furnace On Time Vs. HDD Calculated

6 Furnace On Time Vs. HDD Published

7 On – Off Cycles

8 Calculated On/Off Cycles Vs. Observed

9 First Floor Areas (ft.2) Walls Windows Doors Total North 288.41 117.55
20.45 426.4 South 386.53 131.22 20.25 538.0 East 360.23 18.17 378.4 West 289.71

10 Second Floor Areas (ft.2)
Walls Windows Doors Total North 499.94 75.71 575.65 South 346.79 16.40 363.20 East 371.72 West 162.50

11 Basement Areas (ft.2) Walls Windows Doors Total North 142.29 South
South 263.42 East 291.13 West 157.25

12 House Total (ft.2) Walls Windows Doors Total North 930.64 193.25 20.45
South 996.74 147.62 20.25 East 18.17 West 805.90 Walls (cedar) Walls (brick)

13 R - Values Walls (Brick) 5.63 Walls (Cedar) 5.94 Windows 2.00 Doors
1.00

14 Heat Losses Date Avg. T-Out Delta T Wall Heat Loss Window Heat Loss
Door Heat Loss Total Heat Loss 1/22 1.64 17.74 1/28 -9.22 27.44 1/29 -9.61 28.22 2/3 -2.15 21.10 2/4 -0.50 19.82 2/5 0.19 20.77 2/6 -5.14 25.61

15 Heat Loss Therms/month
House Heat Loss Month Heat Loss BTU/hr Heat Loss Therms/month BTU/day Therms/day BTU/month Therms/month December 76.79 2.48 January 94.82 3.06 February 71.32 254724 2.55 March 38.84 125292 1.25

16 Conclusion HDD calculated vs. HDD published strong correlation and minimal error. Excel program was modified to yield accurate furnace on/off calculations Furnace on time vs. HDD & calculated vs. HDD published showed a poor correlation. House Heat loss calculations yielded reasonable results.


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