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Hotbox Test R-value Database

IBACOS / TRUSTONE Wall Systems

 

Summary Of Hotbox Test Data And Calculations

Tests performed Winter 1996 click here for test specifics

Meter Chamber Air, ° F (t h)

97.8

Meter Air Speed, MPH

0.32

Meter Chamber Average Surface, ° F (t 1)

94.19

Climate Air, ° F (t c)

50.20

Climate Air Speed, MPH

1.95

Climate Side-Average Surface, ° F (t 2)

51.88

Panel Mean Temperature, ° F

73.04

Meter Chamber Energy Input, Btu/hr (Q h+Q f)

289.9

Face-To-Face Rwall

surface to surface R-value of wall (hr*ft2*°F/Btu)

9.44

Air-To-Air Ru wall

overall R-value of sample wall (air-to-air), Rms air + Rwall + Rcs air (hr*ft2*°F/Btu)

10.59

Rms air

meter side air film resistance (hr*ft2*°F/Btu)

0.77

Rcs air

climate side air film resistance (hr*ft2*°F/Btu)

0.38

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