Copper Pipes Heat Loss

Reference data and engineering information about copper pipes heat loss for material properties applications.

copperpipesheatlossCalculator

Overview

Engineering reference data for Copper Pipes Heat Loss in material science and properties.

Key Formulas

Stress

$\sigma = \frac{F}{A}$

Force per unit area.

Strain

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

Hooke's Law

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

Thermal Expansion

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Variables

Symbol	Description	Unit
$\sigma$	Stress	Pa
$\varepsilon$	Strain	—
$E$	Young's modulus	Pa
$\alpha$	Thermal expansion coefficient	1/°C
$\Delta T$	Temperature change	°C

9 rows

Heat losses from uninsulated copper pipes per metre length for various nominal bores and temperature differences.
Nominal Bore(mm)	Nominal Bore(inches)	Heat Loss (ΔT 22°C)(W/m)	Heat Loss (ΔT 38°C)(W/m)	Heat Loss (ΔT 55°C)(W/m)	Heat Loss (ΔT 40°F)(Btu/hr ft)	Heat Loss (ΔT 68°F)(Btu/hr ft)	Heat Loss (ΔT 99°F)(Btu/hr ft)
15	1/2	21	32	45	22	34	47
22	3/4	28	43	60	29	45	53
28	1	34	53	76	36	56	79
35	1 1/4	41	64	89	43	67	93
42	1 1/2	47	74	104	49	77	108
54	2	59	93	131	62	97	136
67	2 1/2	71	111	156	74	116	162
76	3	83	129	181	87	135	189
108	4	107	165	232	111	172	241

Source: engineeringtoolbox.com

Unit Conversion Factors

Power: $1 \text{ W} = 3.412 \text{ Btu/hr}$
Length: $1 \text{ ft} = 0.3048 \text{ m}$

Interactive Charts

Copper Tubes - Uninsulated heat loss

References

Original Source

Source: engineeringtoolbox.com