CUMMINS CONFIDENTIAL 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
HVAC Project ME 414 – Thermal Fluid System Design Professor John Toksoy Final Project
Mar 21, 2016
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. Goals. Calculate HDD Furnace on time Number of on-off cycles Heat Loss Correlate Data. - PowerPoint PPT Presentation
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CUMMINS CONFIDENTIAL
HVAC Project
ME 414 – Thermal Fluid System DesignProfessor John Toksoy
Final Project
Team Members:Kaela HlaulaniPrince Bedell
William BroaddusDerek VleckTrever Zike
Seth Simonson
CUMMINS CONFIDENTIAL
Goals Calculate HDD Furnace on time Number of on-off cycles Heat Loss Correlate Data
CUMMINS CONFIDENTIAL
HDD & Furnace On Time
Date HDD Calculated
HDDActual % Error Furnace
on Time
# 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 29 0
1/28 49.39 48.0 2.81% 2.04 51 51 0
1/29 50.79 50.0 1.56% 2.65 59 59 0
2/3 37.98 37.0 2.58% 1.42 33 33 0
2/4 35.68 35.0 1.91% 1.72 48 48 0
2/5 37.39 32.0 14.4% 1.79 57 57 0
2/6 46.11 41.0 11.1% 1.43 50 50 0
CUMMINS CONFIDENTIAL
HDD Calculated Vs. HDD Published
CUMMINS CONFIDENTIAL
Furnace On Time Vs. HDD Calculated
CUMMINS CONFIDENTIAL
Furnace On Time Vs. HDD Published
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On – Off Cycles
CUMMINS CONFIDENTIAL
Calculated On/Off Cycles Vs. Observed
CUMMINS CONFIDENTIAL
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 0 18.17 378.4
West 289.71 0 0 289.71
CUMMINS CONFIDENTIAL
Second Floor Areas (ft.2)
Walls Windows Doors Total
North 499.94 75.71 0 575.65
South 346.79 16.40 0 363.20
East 371.72 0 0 371.72
West 162.50 0 0 162.50
CUMMINS CONFIDENTIAL
Basement Areas (ft.2)
Walls Windows Doors Total
North 142.29 0 0 142.29
South 263.42 0 0 263.42
East 291.13 0 0 291.13
West 157.25 0 0 157.25
CUMMINS CONFIDENTIAL
House Total (ft.2)
Walls Windows Doors Total
North 930.64 193.25 20.45 1144.34
South 996.74 147.62 20.25 1164.61
East 1023.08 0 18.17 1041.24
West 805.90 0 0 805.90
Walls (cedar) Walls (brick)
1310.57 1342.80
CUMMINS CONFIDENTIAL
R - Values
Walls (Brick) 5.63
Walls (Cedar) 5.94
Windows 2.00
Doors 1.00
CUMMINS CONFIDENTIAL
Heat Losses
Date Avg. T-Out
DeltaT
Wall Heat Loss
Window Heat Loss
Door Heat Loss
Total Heat Loss
1/22 1.64 17.74 8144.70 3023.40 1044.24 12212.351/28 -9.22 27.44 12598.85 4050.78 1615.31 18264.941/29 -9.61 28.22 12956.30 2082.85 1661.14 16700.302/3 -2.15 21.10 9686.77 1557.24 1241.95 12485.962/4 -0.50 19.82 9101.74 1463.19 1166.95 11731.872/5 0.19 20.77 9538.45 1533.39 1222.94 12294.792/6 -5.14 25.61 11760.62 1890.64 1507.84 15159.10
CUMMINS CONFIDENTIAL
House Heat Loss
Month Heat Loss BTU/hr
Heat Loss Therms/mo
nthBTU/day Therms/
day BTU/month Therms/month
December 10321.10 76.79 247706.40 2.48 7678898.40 76.79
January 12744.70 94.82 305872.80 3.06 9482056.80 94.82
February 10613.50 71.32 254724 2.55 7132272 71.32
March 5220.50 38.84 125292 1.25 3884052 38.84
CUMMINS CONFIDENTIAL
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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