Specification Sheet

DDEESSIIGGNN ““UU”” FFAACCTTOORR
NNEETT SSQQ.. FFTT..
XX TTEEMMPP.. DDIIFFFF.. °°FF XX CCOOEEFFFFIICCIIEENNTT
=
1. WALLS ___________ X _____________ X _____________ =
2. WINDOWS ___________ X _____________ X _____________ =
3. DOORS ___________ X _____________ X _____________ =
4. ROOF ___________ X _____________ X _____________ =
5. EXPOSED (EXPOSED LENGTH) X (“F” FACTOR)
FLOOR
PERIMETER__________________________ X _________________________ =
6. (VOLUME (CU. FT.) X (DESIGN TEMP. DIFF.) X (AIR CHANGES/HR.)
XX
=
55
7. Add 10% to heat loss figures for areas exposed to prevailing winds.
TTOOTTAALL HHEEAATT LLOOSSSS BBttuu//hhrr..
““FF”” FFaaccttoorrss ffoorr FFlloooorr HHeeaatt LLoossss ““FF”” FFaaccttoorr
FFLLOOOORR
Design Temps (i.e. Montreal - 16,
Milwaukee -6, St. Louis 7, Chattanooga 15)
-15F to -19F, no insulation 50.00
-15F to -19F, 24" thick, R=3.75 insulation 43.00
-5F to -9F, no insulation 50.00
-5F to -9F, 24" thick, R=3.75 insulation 38.00
6F to 10F, no insulation 50.00
6F to 10F, 18" thick, R=3.75 insulation 31.00
11F to 15F, no insulation 50.00
11F to 15F, 12" thick, R=3.75 insulation 31.00
CCoommmmoonn HHeeaatt TTrraannssffeerr CCooeeffffiicciieennttss
FFiinnaall CCaallccuullaattiioonnss
BBuuiillddiinngg MMaatteerriiaall ““UU”” FFaaccttoorrss
WWAALLLLSS
• Poured concrete, 80#/cu. ft.
8-inch 0.25
12-inch 0.18
• Concrete block, hollow cinder aggregate
8-inch 0.39
12-inch 0.36
• Gravel aggregate
8-inch 0.52
12-inch 0.47
• Concrete block, w/4-inch facebrick
Gravel, 8-inch 0.41
Cinder, 8-inch 0.33
• Metal
(un-insulated) 1.17
w/1-inch blanket insulation 0.22
w/3-inch blanket insulation 0.08
• Frame
2 X 4 w/1/2" asphalt sheathing and
wood siding, 1/2" gypsum wall board
(un-insulated) 0.23
w/3" insulation 0.07
RROOOOFFIINNGG
• Corrugated metal (un-insulated) 1.50
w/1" bolt or blanket 0.23
w/1-1/2" bolt or blanket 0.16
w/3"bolt or blanket 0.08
• Flat metal
w/3/8" built-up roofing 0.90
w/1" blanket insulation under deck 0.21
w/2" blanket insulation under deck 0.12
• Wood/1"/
(un-insulated) w/3/8" built-up roofing 0.48
w/1" blanket insulation 0.17
• Wood/2"/
(un-insulated) w/3/8" built-up roofing 0.32
w/1" blanket insulation 0.15
• Concrete slab/2"/
(un-insulated) w/3/8" built-up roofing 0.30
w/1" insulation board 0.16
• Concrete slab/3"/
(un-insulated) w/3/8" built-up roofing 0.23
w/1" insulation board 0.14
• Gypsum slab/2"/
(un-insulated) w/1/2" gypsum board 0.36
w/1" insulation board 0.20
• Gypsum slab/3"/
(un-insulated) w/1/2" gypsum board 0.30
w/1" insulation board 0.18
WWIINNDDOOWWSS
• Vertical, single-glass 1.13
• Vertical, double-glass, 3/16" air space 0.69
• Horizontal, single-glass (sky light) 1.40
DDOOOORRSS
• Metal–single sheet 1.20
• Wood, 1" 0.64
• Wood, 2" 0.43
HHEEAATT LLOOSSSS
BBTTUU//HHRR..
1. ___________________________________ Btu/hr.
2. ___________________________________ Btu/hr.
3. ___________________________________ Btu/hr.
4. ___________________________________ Btu/hr.
5. ___________________________________ Btu/hr.
6. ___________________________________ Btu/hr.
7. ___________________________________ Btu/hr.
UU == 11//RR
RR == 11//UU