Some
advantages of 3G’s heat pipe solar collector
1、
VACUUM TUBE
3G's advantage:
(a). We produce the tubes by ourself, so we can control the quality
by ourself;
(b). Our selective coating is ALN/SS-ALN/CU, it is a advanced
technology. From our EN12975 test report, its absorptivity
coefficient is more than 94%, and its emissivity coefficient is less
than 7%;
(c).The vaccum degree of our vacuum tubes can reach 5*10-4
pa, some others are 5*10-3 Pa, so our vacuum tubes can
work for more colder temperature.
2、
IMPROVED DESIGN OF HEADER PIPE AND HEAT PIPE PORT
Since some other suppliers use the heat pipe with
14mm condenser, so the diameter of their heat pipe port is 16mm and
the diameter of their manifold header pipe is 22mm, and thickness
are 0.8mm or 1.0mm. Since 3G's heat pipe with 24mm condenser, so
3G's heat pipe port and manifold header pipe is 26.6 mm and 37mm,
the thickness is 1.2mm.
3G's advantage:
(a). Thicker copper pipe is good for welding, don't need to worry
about leakage from the welding points.
(b). It can work well for high pressure working condition.
3、
IMPROVED DESIGN OF HEAT-TRANSFER SHEETS
Some other suppliers use several short sheets
with 2mm thickness for one heat pipe; 3G use a complete sheet with
3mm thickness and 1800mm length for heat pipe.
3G's advantage:
(a). From vertical section of 3G's heat-transfer sheet, you can see
there is a hole which we will insert the heat pipe through it. You
can also see that other suppliers put the heat pipe in the middle of
two half sheets. Compare to the sheet of other suppliers, our
heat-transfer sheet can attach heat pipe more closer, so it can
transfer more energy than others.
4、
IMPROVED DESIGN OF HEAT-PIPES
1). The thickness of the
heat pipe is different.
Some other suppliers's thickness is 0.3mm or 0.25mm; 3G's thickness
is 0.6mm,
3G's advantages:
(a). The middle of the heat pipe is a vacuum space, since our heat
pipe is thicker, so other gas can't enter into vacuum space through
the heat pipe easier,so our heat pipe can keep vaccum for longer
time;
(b). Even if the liquid in the heat pipe freezen, since our heat
pipe is thicker,so it can't break, so our heat pipe can work in more
colder temperature.
2). The material of heat pipe
is different.
Some other suppliers's material is the common
copper (brass); 3G's material is no Oxygen pure copper, the model
number is TU1 copper, the most expensive material for heat pipe;
3G's advantages:
(a). The conduction coefficient of pure copper is 381 W/m.k, and the
conduction coefficient of common copper (brass) is 118 W/m.k. So,
conduction coefficient of 3G's heat pipe is more better.
3). The diameter of heat pipe
condenser is different.
Most of other suppliers use the heat pipe with
14mm or 16 mm condenser heat pipe, the Apricus use 22mm condenser,
3G's heat pipe condenser is 24mm, it is the bigest condenser in
China company.
3G's advantages: (a). Bigger condenser, the heat
pipe can transfer heat energy more efficient.
4). The anti-freeze technical
is different.
Some other suppliers's heat pipe use the old
anti-freeze technology, filled with the antifreeze; 3G's heat pipe
filled with pure water and the metal powder, this is the newest
anti-freeze technology.
3G's advantage:
(a). 3G's heat pipe can work for more colder temperature, minus 30
degree is ok.
Other suppliers's disadvantage: For the heat pipe filled with
antifreeze, after a period, the antifreeze will chemolysis and
produce some gas, and these gas can't turn into liquid to recycle,
it will stay in the condenser of the heat pipe. From the structure
on the left side, you can see how heat pipe work. So, if use this
small condenser heat pipe, when the condenser is full of this gas,
the liquid in the heat pipe can't recycle by the condenser any more,
that is mean the heat pipe is useless at that monment. |