Vacuum Tube Collectors
CRK

CRK-12 High vacuum tube collectors

Model / Performance

The CRK collectors meet the requirements for the "Blue Angel" certificate of environmental excellence to RAL UZ 73
Powerful: high performance on the smallest of footprints; high yields particularly during spring and autumn; especially suitable for combined DHW heating and central heating backup
Certified by Solar Keymark
Long lasting: direct flow collector working on the principle of a Thermos flask; enables a life-long vacuum and therefore ensures high thermal insulation
Constant: absorber has a highly selective coating on the outside of the inner glass tube inside the high vacuum and is therefore protected against environmental influences; no degradation, therefore consistently high efficiency
Flexible: modular layouts for ideal matching to the space available on the roof
Statutory warranty: 5 years

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Vacuum Tube Collectors CRK

Type		CRK-12
General data
Connections (MS locking ring fitting)	mm	15
Installation angle		15° bis 75°
Heat transfer medium		ANRO LS
Solar Keymark registration no.		011-7S321 R
Absorption (energy absorption)	%	> 93,5
Emissions	%	≤ 6
Optical efficiency *	%	64.2
Heat loss coefficient a1 *	W/(m2 K)	0.88500000000000001
Heat loss coefficient a2 *	W/(m2 K2)	1E-3
Max. stagnation temperature	°C	272
Angle of incidence correction factor K * Iongitudinal / transversal	%	89 / 99
Effective thermal capacity *	Coeff in kJ/ (m2 K)	8.4160000000000004
Max. operating pressure	bar	10
Pressure drop (at 15 l/h x m² and 40 °C)	mbar	5
Number of vacuum tubes per collector	Stück	12
Glass tube diameter	mm	47 / 33 / 1,6
Gross surface area	m²	2.29
Aperture area	m²	2
Capacity	l	1.74
Dimensions
Length	mm	1640
Width	mm	1390
Depth	mm	100
Weight
Weight (empty)	kg	32.700000000000003

Vacuum Tube Collectors CRK

Vacuum Tube CollectorsCRK