Vitosol 200-T, Type Sp2A 7. 1 Product Description; Benefits - Viessmann VITOSOL 100-F SV Technical Manual

Vitosol 200-T, type SP2A
7.1 Product description
B
A
C
D
E
A Stainless steel twin pipe heat exchanger
B Condenser
C Absorber
D Heat pipe
E Evacuated glass tube
The Vitosol 200-T vacuum tube collector, type SP2A is available in the
following versions:
■ 1.26 m 2 with 10 vacuum tubes
■ 1.51 m
2 with 12 vacuum tubes
■ 3.03 m 2
with 24 vacuum tubes

Benefits

■ Highly efficient vacuum tube collector based on the heat pipe prin-
ciple for high operational reliability
■ Universal application through vertical or horizontal installation in any
location, either on rooftops, walls or for freestanding installation
■ Special balcony module (1.26 m
balcony railings or walls
■ 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
Duotec stainless steel twin pipe heat exchanger
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absorber area) for installation on
The Vitosol 200-T, type SP2A can be installed on pitched roofs, flat
roofs, on walls 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 fitted inside a Duotec stainless steel twin pipe heat exchanger.
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. The heat
is transferred to the passing heat transfer medium by the twin pipe heat
exchanger containing the condenser. This causes the steam to con-
dense. 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 25° without increas-
ing shade on the absorber surface.
Up to 15 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. The connection pipes are cladded with a
thermally insulated covering.
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 flow pipe in
the header casing of the collector.
■ Vacuum tubes can be rotated for optimum alignment with the sun,
thereby maximising the energy utilisation
■ Dry connection, meaning vacuum 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
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