Question

What is the k-value for the shelter material (units are BTU-hr-ft-deg F)?

Answer 1

Thermal conductivity k is the ability of material to conduct heat.

When conductivity is high → heat sink

When conductivity is low → insulation.

A shelter material are those material use for building house and they have different thermal conductivity. e.g.

1. corrugated steel culverts

2. steel plate

3. reinforced fiberglass

4. polyethylene

5. concrete reinforced e.t.c.

Material...................k (BTU-hr-ft-deg F)

Aluminum...............144.5

Brass........................62.99

Brick.........................0.39

Concrete.................0.24

Fibreglass................0.023

Glass..........................0.61

Iron(cast)...................31.78

Steel...........................26.6

Nylon..........................0.14

Polyethene................0.24

Zinc..............................67.04

Wood(oak)................0.098

Wool.............................0.04

Wood(plywood).........0.075. e.t.c.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Thermal conductivity k is the ability of material to conduct heat.

When conductivity is high → heat sink

When conductivity is low → insulation.

A shelter material are those material use for building house and they have different thermal conductivity. e.g.

1. corrugated steel culverts

2. steel plate

3. reinforced fiberglass

4. polyethylene

5. concrete reinforced e.t.c.

Material...................k (BTU-hr-ft-deg F)

Aluminum...............144.5

Brass........................62.99

Brick.........................0.39

Concrete.................0.24

Fibreglass................0.023

Glass..........................0.61

Iron(cast)...................31.78

Steel...........................26.6

Nylon..........................0.14

Polyethene................0.24

Zinc..............................67.04

Wood(oak)................0.098

Wool.............................0.04

Wood(plywood).........0.075. e.t.c.