EN 12735 Copper Tubes Air Conditioning Refrigeration

Reference data and engineering information about en 12735 copper tubes air conditioning refrigeration for hvac systems applications.

12735coppertubesair

Overview

Engineering reference data for EN 12735 Copper Tubes Air Conditioning Refrigeration in HVAC systems.

Key Formulas

Sensible Heat

$Q = \dot{m} c_p \Delta T$

Heat causing temperature change.

Latent Heat

$Q = \dot{m} h_{fg} \Delta\omega$

Heat causing moisture change.

COP (Cooling)

$COP = Q_c / W$

Coefficient of performance.

Variables

Symbol	Description	Unit
$Q$	Heat transfer	W
$\dot{m}$	Mass flow rate	kg/s
$c_p$	Specific heat of air	J/(kg·K)
$\Delta T$	Temperature difference	K

Tube Dimensions & Wall Thickness Availability

The following table shows the availability of EN 12735 copper tubes by nominal outside diameter and wall thickness. Designations indicate form: S = straight lengths, C = coils.

34 rows

EN 12735 copper tube dimensions: nominal outside diameter vs. wall thickness availability (S = straight lengths, C = coils)
Metric OD(mm)	Imperial OD(mm)	Imperial OD(in)	e=0.8mm	e=1.0mm	e=1.5mm	e=1.65mm	e=2.0mm	e=2.5mm
	3.18	1/8	C
	3.97	5/32	C	C
	4.76	3/16	C
6			S, C	C
	6.35	1/4	C	C
	7.94	5/16	C	C
8			S, C	C
	9.52	3/8	C	C
10			S, C	S, C
12			S, C	S, C
	12.7	1/2	C	S, C
15			S, C	S, C
	15.87	5/8		S, C
18				S, C
	19.06	3/4			C
22				S, C	S, C
	22.3	7/8				C
	25.4	1				S
28						S
	28.57	1 1/8					S
	34.92	1 3/8					S
35							S
	41.27	1 5/8					S
42							S
	53.97	2 1/8					S	S
54							S
64								S
	66.67	2 5/8					S	S
76.1								S
	79.37	3 1/8					S	S
	88.9	3 1/2					S
	92.07	3 5/8					S	S
	104.8	4 1/8					S	S
108							S

Source: engineeringtoolbox.com

Material Temper Properties

EN 12735 copper tubes are supplied in three material tempers with distinct mechanical properties:

Interactive Charts

ASTM B306 Copper Tubes for Drain, Waste and Vent - Dimensions and Working Pressures

References

Original Source

Source: engineeringtoolbox.com