| r_1 |
|
(Inside radius of pipe , in) |
| r_2 |
|
(Outside radius of pipe, in) |
| k_1 |
|
(Thermal conductivity of pipe, BTU per hr per ft per deg F) |
| deltar_2 |
|
(Thickness of Insulation 1, in) |
| k_2 |
|
(Thermal conductivity of insulation 1, BTU per hr per ft per deg F) |
| deltar_3 |
|
(Thickness of insulation #2, in) |
| k_3 |
|
(Thermal conductivity of insulation #2, BTU per hr per ft per deg F) |
| hi |
|
(Inside film coefficient, BTU per hr per ft2 per deg F) |
| ho |
|
(Outside film coefficient, BTU per hr per ft2 per deg F) |
| Tib |
|
(Inside Bulk Temperature, deg F) |
| Tob |
|
(Outside Bulk Temperature, deg F) |
