The most flexible and adaptable of vacuum tube panels, U-tubes can be mounted at any angle, blending in to restricted access areas, with any system from thermosiphon to in floor heating. SLU series are all-glass evacuated tubular collectors with metal (copper) U tubes inside. Fluid circulates from the header to the bottom of the tubes, then back up.

European certification, efficiency and durability testing results may be downloaded.

Copper U tubes can stand high working pressures-up to 6 bar (0.6 Mpa) and have the highest efficiency of the solar panel only units.

·Graded Al-N/Al selective coating, high energy absorption and low heat transfer losses

·highly evacuated with pressure≤5×*0*2Pa in the space between outer and inner covers, so no heat loss

·High transparency with boron silicon glass, high resistance to cold water shock

·High 6 bar pressure capable

·*2 tube panels can be joined in series

·Use for pools, thermosiphon systems

·Use in pressure split systems

U Tube Solar Water Panel: How it works

·*9 % heat conduction

·Lifetime greater than *0 years

·Vacuum ensures no heat loss

· Withstands hailstones

These high efficiency glass tubes may be used with 1.5 meter heat pipes and fin inserts as well as passive solar water heaters that circulate water directly in the evacuated tubes. Solar energy is trapped on the black absorber surface, which is deposited on the inner glass using thin-film technology.

A vacuum between the inner and outer glass tubes prevents heat energy from being conducted away to the outside environment, which means that outside air temperature is almost irrelevant to the degree to which the inside the tubes can be heated.

Model

SLU***0/*2 tube

Collector tubes

SL-I****0 (1.5 meter, *7 mm diameter)

Number of tubes

*2

U tube material

Copper

U tube

Diameter 8 mm

Thickness 1 mm

Max. Pressure (working)

0.6 MPa=6 bar (about 6 atmospheres), tested to 9 bar

Area, m2

Gross/"Aperature" 1.**8 Absorber 0.**8

Intercept efficiency (h0)

0.**3 Aperature (0.**3 Absorber, 0.**6 European conversion for RETScreen Frta)

Heat Loss (a1)

FrUL=1.**3 W/(m2K) (European format converted for RETScreen)

Net Weight

*0 kg

Reflector

Flat Plate Diffuse, Aluminum

Inlet and Outlet Piping, in

1/2” (*2 tube), stainless steel

Stagnation Temperature

**0 degrees C, with reflector

Energy per year

**5 kWh/m2