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002 Databook-Load-Calculation

This document contains information about heat transfer and insulation values for building materials used in HVAC load calculations. It lists common materials like drywall, wood, concrete and their R-values. It also discusses factors that contribute to a building's cooling and heating load such as conduction through walls and glass, solar heat gain, shading coefficients, occupants, lighting, equipment and infiltration. The goal is to provide data to accurately calculate a building's total heating and cooling load.

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Eng EMs
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276 views50 pages

002 Databook-Load-Calculation

This document contains information about heat transfer and insulation values for building materials used in HVAC load calculations. It lists common materials like drywall, wood, concrete and their R-values. It also discusses factors that contribute to a building's cooling and heating load such as conduction through walls and glass, solar heat gain, shading coefficients, occupants, lighting, equipment and infiltration. The goal is to provide data to accurately calculate a building's total heating and cooling load.

Uploaded by

Eng EMs
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Data Book for HVAC Load Calculation

Augmintech
In/out
R-VALUE (F° · SQ.FT. ·
MATERIAL THICKNESS HR/BTU)

Air Films

Exterior 0.17

Interior Wall 0.68

Interior Ceiling 0.61

Air Space

Minimum 1/2" up to 4" 1.00

Building Board

Gypsum Wall Board 1/2" 0.45

Gypsum Wall Board 5/8" 0.5625

Plywood 1/2" 0.62

Plywood 1" 1.25

Fiber board sheathing 1/2" 1.32

Medium Density Particle Board 1/2" 0.53

Insulating Materials

R-11 Mineral Fiber with 2x4 metal 5.50


studs @ 16" OC

R-11 Mineral Fiber with 2x4 wood 12.44


studs @ 16" OC
R-VALUE (F° · SQ.FT. ·
MATERIAL THICKNESS HR/BTU)

R-11 Mineral Fiber with 2x4 metal 6.60


studs @ 24" OC

R-19 Mineral Fiber with 2x6 metal 7.10


studs @ 16" OC

R-19 Mineral Fiber with 2x6 metal 8.55


studs @ 24" OC

R-19 Mineral Fiber with 2x6 wood 19.11


studs @ 24" OC

Expanded Polystyrene (Extruded) 1" 5.00

Polyurethane Foam (Foamed on site) 1" 6.25

Polyisocyanurate (Foil Faced) 1" 7.20

Masonry and Concrete

Common Brick 4" 0.80

Face Brick 4" 0.44

Concrete Masonry Unit (CMU) 4" 0.80

Concrete Masonry Unit (CMU) 8" 1.11

Concrete Masonry Unit (CMU) 12" 1.28

Concrete 60 pounds per cubic foot 1" 0.52

Concrete 70 pounds per cubic foot 1" 0.42

Concrete 80 pounds per cubic foot 1" 0.33

Concrete 90 pounds per cubic foot 1" 0.26

Concrete 100 pounds per cubic foot 1" 0.21


R-VALUE (F° · SQ.FT. ·
MATERIAL THICKNESS HR/BTU)

Concrete 120 pounds per cubic foot 1" 0.13

Concrete 150 pounds per cubic foot 1" 0.07

Granite 1" 0.05

Sandstone / Limestone 1" 0.08

Siding

Aluminum / Vinyl (not insulated) 0.61

Aluminum / Vinyl (1/2" insulation) 1.80

Flooring

Hardwood 3/4" 0.68

Tile 0.05

Carpet with fiber pad 2.08

Carpet with rubber pad 1.23

Roofing

Asphalt Shingles 0.44

Wood Shingles 0.97

Glazing

Single Pane 1/4" 0.91


R-VALUE (F° · SQ.FT. ·
MATERIAL THICKNESS HR/BTU)

Double Pane with 1/4" air space 1.69

Double Pane with 1/2" air space 2.04

Double Pane with 3/4" air space 2.38

Triple Pane with 1/4" air spaces 2.56

Triple Pane with 1/2" air spaces 3.23

Doors

Wood, solid core 1 3/4" 2.17

Solid insulated metal door, 1.5" - 2" 6.00 - 7.00


polystyrene insulation
ASTM C518 Calculated

Solid insulated metal door, 1.5" - 2" 2.20 - 2.80


polystyrene insulation
ASTM C1363 Operable

Solid insulated metal door, 1.5" - 2" 10.00 - 11.00


polyurethane insulation
ASTM C518 Calculated

Solid insulated metal door, 1.5" - 2" 2.50 - 3.50


polyurethane insulation
ASTM C1363 Operable

CLTD
CLTD for roof
CLTD For roof

CLTD For roof


CLTD For wall
Outdoor design conditions
Conduction through glass (transmission)

CLTD for glass


Solar load through glass
Q=SGHF*A*SC*CLF
SGHF
SC
CLF
Overall Factor (SHGC)
Internal load
Occupants (2017 ASHRAE, C18/T1:474)
Internal cooling load
Number of people
People (heat rate per people)
Light
Equipment and appliance
Infiltration
Apparatus Dew Point

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