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Hotbox Test R-value Database

Composite Technologies Panel With Black Foam Core

 

Summary Of Hotbox Test Data And Calculations

Tests performed May 2001

 

Meter side air temperature (°F)

71.5

Meter side air velocity (MPH)

0.5

Meter side connector area temp (°F)

69.8

Meter side concrete penetration temperature (°F)

--

Meter side rebar area temperature (°F)

69.9

Meter side joint area temperature (°F)

69.7

Meter side concrete panel area temperature (°F)

69.9

Average meter side wall surface temperature (t1) (°F)

69.9

Climate side air temperature (tc) (°F)

5.5

Climate side air velocity (MPH)

2.8

Climate side connector area temp (°F)

4.4

Climate side concrete penetration area temperature (°F)

--

Climate side rebar area temperature (°F)

4.8

Climate side joint area temperature (°F)

42.9

Climate side concrete panel surface temperature (°F)

4.5

Average climate side wall surface temperature (°F)

4.5

Meter side center hole area temp (°F)

--

Panel mean temperature (°F)

32.7

Total measured energy into meter box (TMP) (Btu/hr )

163.7
Energy through meter box walls (Q mbox) (Btu/hr )
0.01
Energy Input (total energy through wall) (Q h +Q r ) (Btu/hr )
163.7
Clear wall R-value (R) (h ft² E F/Btu )
29.1

Meter side air film resist. (R ms air) (h ft² E F/Btu )

0.64
Climate side air film resist. (R cs air) (h ft² E F/Btu )
0.38
Ru-value, (R ms air +R + Rcs air) (h ft² E F/Btu )
30.1

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