U Pipe Evacuated Tube Solar Collector U1521

For water and space heating.

Scope of Delivery
Fully pre-assembled unit comprising
- evacuated tubes based on the thermos flask principle
- manifold with direct flow heat conduction unit and dry tube connection
Collectors are packed in individual boxes. In addition, there is a sun protection sheet over the evacuated tubes.

Installation types
- Pitched roof, flat roof, horizontal

Advantages and benefits

-durable U Pipe Solar Collector
- Specially developed for applications that require horizontally mounting.
- Short installation times due to complete pre-assembled collectors.
- Simple and reliable connection technology in order to extend several collectors side by side through pre-assembled screw connections. Further tubing and an extensive thermal insulation is not necessary
- Integrated return pipe and highly efficient thermal insulation.
- Manageable module sizes for a very high performance and a quick and easy installation.
- Flow and return pipes may be fitted on the left or the right side of the manifold.
- High flexibility due to the different widths and lengths of the collectors.
- Quick and easy exchange of the evacuated tubes without using any tools.

Product Characteristics

1.     Low pressure loss allows several modules to be connected in series

2.     Minimum of soldering points ensures a high leakage safety

3.     Well-known indestructibility of Ritter Solar tubes confirmed by the hailstone test DIN EN 12975-2

4.     High energy yield in the transitional period and winter

5.     In wintery conditions with a 400 W/m⊃2; irradiation and 0 °C air temperature at a temperature of 20 °C, Ritter Solar evacuated tube collectors already have a higher energy yield than flat collectors.

6.     Extremely low heat loss due to the high vacuum.

Data Sheet

Series									U 1521
Number   of evacuated tubes									21
η0 in   relation to aperture, EN 12975							%		74.5
a1   with wind, in relation to aperture area							W/(m2k)		2.007
a2   with wind, in relation to aperture area							W/(m2k2)		0.005
Yield   Forecast (location Würzburg, Germany, reference area 3 m2)							kWh/m2a		780
Yield   Forecast (location Würzburg, Germany, reference area 5 m2)							kWh/m2a		619
Collector   dimensions (L x H x D)							mm		1447 x   1640 x 110
Gross   surface area							m2		2.37
Aperture   area							m2		1.98
Collector   contents							l		2.5
Weight							kg		51
Max.   working overpressure							bar		10
Max.   stagnation temperature							°C		220
Connection   fitting diameter							φ (mm)		15
Sensor   sleeve							φ (mm)		6
Collector   material									Al /   Cu / glass / silicone / PBT / EPDM / TE
Glass   tube material									Borosilicate   glass 3.3
Selective   absorber coating material									Cu /   SS-AIN / AIN
Glass   tube (Ø ext./ int./wall thickn./tube lgth.)									47/37/1.6/1500
Colour   (aluminium frame profile, anodised)									Aluminum   grey
Colour   (plastic parts)									Black
Thermal   shock test / ITW test number								06COL513/
Hailstone   test according to DIN EN 12975-2/TÜV test No.									435/142448
EC   type examination									Z-IS-DDK-MUC-07-08-100029919-003
DIN   CERTCO registration number									011-7S1990R
Package   dimensions (L x H x D)							mm		1590 x   1675 x 110

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