oventrop OKF-MQ25, Инструкция по установке и эксплуатации

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4 Technical data
4.1 Dimensions and technical data of the flat-plate collector
“OKF-MQ25”
Illustr. 6: Dimensions
OKF-MQ 25
2162
2151
8
0
1
0
5
6
1
2
1
5
Suitable measures (e.g. safety valves) have to be taken to en-
sure that the maximum operating pressures and maximum and
minimum operating temperatures are not exceeded or under-
cut.
DANGER !
Flat-plate collector Unit “OKF-MQ 25”
Item no. 136 14 40
Gross surface area m 2 2.61
Outer dimensions mm 2151 x 1215 x 80
Aperture surface area m 2 2.37
Collector connection – Ø 22 mm connecting nipple
Weight kg 44
Absorption coefficient %
␣
= 95
Emission coefficient %
⑀
= 5
Transmission %
␶
= 91
Collector tilt angle freestanding installation Grad 15 - 75
Collector tilt angle rooftop installation Grad 15 - 75
Stagnation temperature according to EN 12975 °C 184
Max. permissible operating pressure bar 10
Annual collector heat return (ITW 5 m²) kWh/m 2 475 kWh/m 2 K
Heat transfer liquid content l 2.3
Glass cover – 4 mm solar safety glass
Solar sensor (inner diameter) mm 6 (plug-in sleeve)
Permissible pressure/suction
load of the collector glass
kN/m 2 3.2
Collector efficiency:
?
0
a
1
a
2
%
W/m
2
K
W/m 2 K
79.6
3.05
0.021
Angle correction factor %
k
␪
(50°) = 88
k
diff
= 82
Specific heat capacity
KJ/m
2
K
6.6
Absorber –
Serpentine patterned absorber made
of aluminium heat conducting steel
sheet and copper pipe, laser welded
Fluid: Tyfocor LS
10l canister: 136 16 90 (OV item no.)
25l canister: 136 16 91 (OV item no.)
1 E
2
5
10 EURO L
0
50
100
150
200
250
300
350
400
0 5 10 15 20 25 30 35 40
Druckverlust [mbar]
EURO L4
EURO L40
EURO L40
EURO L4
Illustr. 7: Pressure losses for collectors connected in series de-
pending on the volume flow, heat transfer liquid: 40% glycol /
60% water at 40°C; pressure loss including connection hoses.
4.2 Markings
Indications on the type plate:
Solar- Keymark- labelling and registration
number
“OKF-MQ25” Collector designation
136 14 40 Item number
4.3 Hydronic interconnection
Interconnection options:
One collector field consists of a maximum of 10 collectors instal-
led in parallel.
Pipework and pump design must be carried out object-related.
Pressure loss [mbar]
Pressure loss [l/m 2 h]
400
350
300
250
200
150
100
50
0
0 5 10 15 20 25 30 35 40
10 OKF-MQ 25
5 OKF-MQ 25
2 OKF-MQ 25
1 OKF-MQ 25
Collector dimensions [mm] and distance between the collec-
tors for the determination of the field dimensions.
2151
66
1
2
1
5
30
Provide an expansion distance of approx. 30 mm after the 6
th
collector. A longer compensator is required for this purpose
(item no.136 14 48).
Illustr. 8: Collector distances
Table 4 Field dimensions, width [mm], without outer connection nipple
1 collector 2 151 6 collectors 1) 13 236
2 collectors 4 363 7 collectors 1) 15 483
3 collectors 6 585 8 collectors 1) 17 700
4 collectors 8 802 9 collectors 1) 19 917
5 collectors 11 019 10 collectors 1) 22 134
1) including 30 mm expansion distance (see above)