8.1 Product description
A
C
D
E
F
B
A
Heat exchanger block made from aluminium and copper
B
Copper manifold
C
Condenser
D
Absorber
E
Heat pipe
F
Evacuated glass tube
The Vitosol 200-T, type SPE vacuum tube collector is available in the
following versions:
■ 1.63 m
2
with 9 vacuum tubes
■ 3.26 m
2
with 18 vacuum tubes
The Vitosol 200-T, type SPE can be installed on pitched roofs, flat roofs
or as a freestanding collector.
On pitched roofs the collectors may be positioned in line (vacuum
tubes at right angles to the roof ridge) or across (vacuum tubes parallel
to the roof ridge).
A highly selectively coated metal absorber is incorporated inside each
vacuum tube. It ensures high absorption of insolation and low emis-
sions of thermal radiation.
A heat pipe filled with an evaporation liquid is arranged on the
absorber. The heat pipe is connected to the condenser. The condenser
is located inside a heat exchanger designed as a block made from
aluminium and copper.
This involves a so-called "dry connection", i.e. the vacuum tubes can
be rotated or replaced even when the installation is filled and under
pressure.
The heat is transferred from the absorber to the heat pipe. This causes
the liquid to evaporate. The vapour rises into the condenser. Heat is
transferred by the heat exchanger with its copper manifold, inside
which lies the condenser, to the heat transfer medium streaming past.
This causes the steam to condense. The condensate returns back
down into the heat pipe and the process repeats.
The angle of inclination must be greater than zero to guarantee circu-
lation of the evaporator liquid in the heat exchanger.
The vacuum tubes can be rotated to precisely align the absorber with
the sun. The vacuum tubes can be rotated through 45° without increas-
ing shade on the absorber surface.
Up to 20 m
2
absorber area can be connected to form one collector
array. For this purpose, the standard delivery includes flexible con-
nection pipes with O-rings.
A connection set with locking ring fittings enables the collector array
to be readily connected to the solar circuit pipework. The collector
temperature sensor is installed in a sensor mount on the manifold in
the header casing of the collector.
Benefits
■ Highly efficient vacuum tube collector based on the heat pipe prin-
ciple for high operational reliability
■ The absorber surface with highly selective coating integrated into the
vacuum tubes is not susceptible to contamination
■ Efficient heat transfer through fully encapsulated condensers and
heat exchanger
■ Vacuum tubes can be rotated for optimum alignment with the sun,
thereby maximising the energy utilisation
■ Dry connection, meaning tubes can be inserted or changed while the
system is full
■ Highly effective thermal insulation for minimised heat losses from the
header casing
■ Easy installation through the Viessmann assembly and connection
systems
Delivered condition
Packed in separate boxes:
■ 9 vacuum tubes per packing unit
■ Header casing with mounting rails
Viessmann offers complete solar thermal systems with Vitosol 200-T
(packs) for DHW heating and/or central heating backup (see pack
pricelist).
Vitosol 200-T, type SPE
32
VIESMANN
VITOSOL
8
5822 440 GB
