Heat pipe

6) Ageing: efficiency reduced less than 5% after 5 years

5) Medium: Mineral without toxicity

    the breakage les than 5% after 20times repeat freezing.

4) Anti-freeze capability

    heat exchanging end temp. >= 62.5 degree celsius under 70 degree celsius hot water(600mm deep).

3) Heat output: >=100W,

    b) body size:                  8mm diax0.75mm

    a) heat exchanging end: 14mm diax1mm

2) Dimension:

1) Material: T2 copper

Heat pipe details:

Solar heat pipe to adapt with 47mm dia/1500mm length solar vacuum tube
or 58mm dia/1800mm length solar vacuum tube