OEM 21
evacuated tube collector

ABOUT THE COLLECTOR:

  • For water heating and supplementary heating
  • Can be connected in series
  • Stainless steel heat pipes

INSTALLATION TYPES:

  • Roof installation
  • Flat roof installation
SERIES   OEM 21
Number of evacuated tubes   21
Collector energy output class (50°C/75°C) (Solergy) 1)   A+++/ A+++
Annual collector energy output (50 °C Würzburg) kWh/ year 1199
Energy output per collector module 2) W 906
Energy output per collector module 3) W 998
Product data in accordance with the EU Regulations 811/2013 and 812/2013 (ErP-relevant data) collector reference area (gross)
Asol collector reference area 2,38
η0 zero-loss efficiency   0,42
ηcol collector efficiency  % 38
a1 first-order heat transfer coefficient W/(m² K) 0,80
a2 second-order heat transfer coefficient W/(m² K²) 0,004
IAM incidence angle modifier   1,27
 
More product detail
Gross area 2,38
Collector dimensions (length x width x height) m 1,64 x 1,45 x 0,10
Collector contents l 2,76
Weight of empty collector kg 46,0
Max. admissible operating pressure bar 10
Max. stagnation temperature °C 239
Connection diameter, compression fitting mm 15
Sensor sleeve mm 6
Colour (aluminium frame section)   aluminum gray, anodized
Colour (plastic parts)   black
Conformity 4)   Pressure Equipment Directive 2014/68/EU
Impact resistance test in accordance with ISO 9806 mm 35
Tests and approvals   ISO 9806, Solar Keymark
DIN-CERTCO registration number   011-7S114R

1) Can be used only with own Solar Keymark certification, for details, refer to: www.solar-heating-initiative.com and www.dincertco.de/en/
2) At 1000 W/m² and 40 K temperature difference between the average collector temperature and ambient temperature.
3) BAt 1000 W/m² and 0 K temperature difference between the average collector temperature and ambient temperature.
4) Existing certification of collectors by TÜV SÜD Industrie Service GmbH for Ritter Energie- und Umwelttechnik GmbH & Co.KG; valid in Germany. TÜV can be contacted for separate certification in accordance with the Pressure Equipment Directive when needed.

PRESSURE LOSS OF RITTER GROUP EVACUATED TUBE COLLECTORS OEM 21

– heat transfer fluid: Tyfocor LS, fluid temperature 40°C

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POWER CURVE OF RITTER GROUP EVACUATED TUBE COLLECTORS OEM 21

– (G = 1000 W/m²)

OEM 21 PRESSURE LOSS