hvac project me 414 – thermal fluid system design professor john toksoy final project
DESCRIPTION
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 PresentationTRANSCRIPT
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
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Goals
Calculate HDD Furnace on time Number of on-off cycles Heat Loss Correlate Data
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HDD & Furnace On Time
DateHDD Calculated
HDDActual
% ErrorFurnace 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
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HDD Calculated Vs. HDD Published
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Furnace On Time Vs. HDD Calculated
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Furnace On Time Vs. HDD Published
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On – Off Cycles
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Calculated On/Off Cycles Vs. Observed
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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
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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
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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
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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
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R - Values
Walls (Brick) 5.63
Walls (Cedar) 5.94
Windows 2.00
Doors 1.00
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Heat Losses
DateAvg. T-
OutDelta
T
Wall Heat Loss
Window Heat Loss
Door Heat Loss
Total Heat Loss
1/22 1.64 17.74 8144.70 3023.40 1044.24 12212.35
1/28 -9.22 27.44 12598.85 4050.78 1615.31 18264.94
1/29 -9.61 28.22 12956.30 2082.85 1661.14 16700.30
2/3 -2.15 21.10 9686.77 1557.24 1241.95 12485.96
2/4 -0.50 19.82 9101.74 1463.19 1166.95 11731.87
2/5 0.19 20.77 9538.45 1533.39 1222.94 12294.79
2/6 -5.14 25.61 11760.62 1890.64 1507.84 15159.10
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House Heat Loss
MonthHeat Loss
BTU/hr
Heat Loss Therms/mo
nthBTU/day
Therms/day
BTU/monthTherms/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
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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.