29
9-TECHNICAL DATA
FLOW AND RETURN LINES
Recommendations:
Surface area of collectors in m
2
Copper pipe mm
Solar pipe
Up to 10
15
DN12
Up to 14
18
DN16
UP to 22
22
DN16
From 23
28
DN20
Caution: use larger dimensions if the pipes are longer than 10 metres.
PIPE JOINTS
• Strong braze welding (according to DIN 8513)
• Pressurised
THERMAL INSULATION OF PIPES
Insulation used for pipes must have the following characteristics:
• stability at temperatures above 150° for short periods of time (e.g.: fibreglass, India rubber).
• External parts must be resistant to UV rays and other atmospheric agents (e.g.: metal leaf casing).
• Insulation thickness= diameter of the pipe (minimum) (based on a coefficient, K, of 0.04 W/mk).
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Summary of Contents for HIGH PERFORMANCE SOLAR COLLECTOR
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