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Design information for wall installation
17.2 Vitosol 200-T vacuum tube collectors, type SP2A
Observe the information on securing collectors on page 111.
A Wall or balcony
Information regarding design and operation
18.1 Sizing the solar thermal system
All sizing recommended below relates to German climatic conditions
18
and common utilisation profiles in the home. These profiles are stored
in the Viessmann "ESOP" calculation program and correspond to the
suggestions of VDI 6002-1 for apartment buildings.
Under these prerequisites, a design output of 600 W/m
for all heat exchangers. The maximum yield of a solar thermal system
is assumed to be approx. 4 kWh/(m
ing on the product and location. To enable this heat yield to be trans-
ferred to the cylinder system, a ratio of approx. 50 l cylinder volume
per m
2
aperture area is determined for all conventional designs. This
ratio may change in relation to the system (subject to solar coverage
and utilisation profiles). In this case, a system simulation is unavoida-
ble.
Irrespective of the capacity, in relation to the transferable output, only
a limited number of collectors can be connected to the various cylin-
ders.
The transfer rate of the internal indirect coils depends on the temper-
ature differential between the collector and cylinder temperatures.
VIESMANN
136
A
2
is assumed
2
d). This value fluctuates depend-
(cont.)
For installation on balconies a special balcony module sized 1.26 m
is available.
The yield can be optimised by rotating the individual tubes through
25°.
Establish the hydraulic connection from below.
20
18
16
14
12
10
8
6
0
5
10 15 20 25 30 35 40 45 50
Collector area in m²
2
Flow rate 25 l/(hm
)
A Vitocell 100-B, 300 l
Surface area, indirect coil 1.5 m
B Vitocell-M/Vitocell-E, 750 l
Surface area, indirect coil 1.8 m
C Vitocell 100-B, 500 l
Surface area, indirect coil 1.9 m
D Vitocell-M/Vitocell-E, 950 l
Surface area, indirect coil 2.1 m
A
B
C D
2
2
2
2
VITOSOL
2
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