A
A
Wall or balcony
The yield can be optimised by rotating the individual tubes by 25°.
Establish the hydraulic connection from below.
Information regarding design and operation
13.1 Sizing the solar thermal system
All sizing recommended below relates to German climatic conditions
and common utilisation profiles in the home. These profiles are
stored in the Viessmann "Solcalc Thermie" calculation program and
correspond to the suggestions of VDI 6002-1 for apartment build-
ings.
Under these prerequisites, a design output of 600 W/m
2
is assumed
for all heat exchangers. The maximum yield of a solar thermal sys-
tem is assumed to be approx. 4 kWh/(m
2
d). This value fluctuates
depending on the product and location. To enable this heat yield to
be transferred 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 such cases, a system sim-
ulation is unavoidable.
Irrespective of the capacity, in relation to the transferable output,
only a limited number of collectors can be connected to the various
DHW cylinders.
The transfer rate of the internal indirect coils depends on the temper-
ature differential between the collector and cylinder temperatures.
6
8
10
12
14
16
18
20
0
5 10 15 20 25 30 35 40 45 50
Temperature
differential
in K
Collector area in m²
A
B
C D
Flow rate 25 l/(hm
2
)
A
Vitocell 100-B, 300 l
Indirect coil surface area 1.5 m
2
B
Vitocell-M/Vitocell-E, 750 l
Indirect coil surface area 1.8 m
2
C
Vitocell 100-B, 500 l
Indirect coil surface area 1.9 m
2
D
Vitocell-M/Vitocell-E, 950 l
Indirect coil surface area 2.1 m
2
6
8
10
12
14
16
18
20
0
5 10 15 20 25 30 35 40 45 50
Temperature
differential
in K
Collector area in m²
A B C
D
Flow rate 40 l/(hm
2
)
A
Vitocell 100-B, 300 l
Indirect coil surface area 1.5 m
2
B
Vitocell-M/Vitocell-E, 750 l
Indirect coil surface area 1.8 m
2
C
Vitocell 100-B, 500 l
Indirect coil surface area 1.9 m
2
D
Vitocell-M/Vitocell-E, 950 l
Indirect coil surface area 2.1 m
2
Design information for installation on walls
(cont.)
118
VIESMANN
VITOSOL
13
5822 440 GB
Summary of Contents for VITOCELL 100-B
Page 142: ...142 VIESMANN VITOSOL ...
Page 143: ...VITOSOL VIESMANN 143 5822 440 GB ...
