Flat collector ES2V/2,0S-AL
ES2V/2,0S AL – flat solar collector with meander absorber, made integrally of aluminium for vertical montage.
Collector's housing construction is based on a rigid frame bent from the special aluminium profile patented by ENSOL company. At the bottom the housing is closed with aluminium sheet, whereas the cover is made of special, high-transmission solar glass. The manner of fixing the glass ensures tightness of housing and minimizes the thermal tensions.
The main part of the collector is an absorber, the plate of which is made of aluminium sheet covered with the high selective eta plus coat in order to ensure high level of solar radiation absorption, which results in obtaining high efficiency of the energy conversion process.
Absorber's plate is welded by means of ultrasonic welding with the system of aluminium tubes, in which the medium circulates. Heat losses were minimized by application of lower and lateral insulation made of mineral wool of low heat conduction.
Specially designed assembly sets made of stainless steel are used for trouble free and secure mounting of collectors to roof constructions with different angle of roof slope inclination. Aluminium collector ENSOL ES2V/2,0S AL is assigned to use a corrugated flexible hose in instalation made in technology of the acid-resistant steel. Flat collectors with prismatic glass have certificate of compatibility with norm DIN EN 12975-2:2006 conducted by TÜV Rheinland Immissionsschutz und Energiesysteme GmbH and Solar
Keymark certificate.
Specification:
|
Symbol |
Unit |
Value |
| Breadth |
A |
mm |
1006 |
| Height |
B |
mm |
2007 |
| Depth |
C |
mm |
85 |
| Mass of collector |
M |
kg |
38 |
| Surface |
S |
m2 |
2,02 |
| optical efficiency |
ηo |
% |
81 |
| Coefficient |
a1 |
W/(m2K) |
3,442 |
| Coefficient |
a2 |
W/(m2K) |
0,016 |
| Service line: pipe AL |
ø |
mm |
22 |
| Enclosure |
Aluminium profile |
| Cover |
Prismatic Solar glass, 4 mm in thickness |
| Absorber: |
|
| Kind of Absorber |
Metal sheet AL thickness 0,3 mm |
| High-selective layer |
BlueTec eta plus |
| Technology of execution |
Ultrasonic welding |
| Absorption coefficient |
α |
% |
95 |
| Emission coefficient |
ε |
% |
5 |
| Breadth |
a |
mm |
953 |
| Height |
b |
mm |
1955 |
| Surface of absorber |
Sb |
m2 |
1,86 |
| Netto surface |
Sn |
m2 |
1,86 |
| Contents of liquid |
V |
dm3 |
1,8 |
| Temperature balance |
Tr |
°C |
208 |
Guaranteed minimal heat output |
kWh/m2∙rok |
525 |
Flow: recommended |
l/h |
aprox.. 40 |
| Insulation |
Rock wool |
| Conduction coefficient |
λ |
W/mK |
0,035 |
| Thickness ofinsulation layer: |
|
| lower |
d |
mm |
40 |
| lateral |
d1 |
mm |
10 |
|
|
|
|
| Research Report |
TÜV Köln 21216395 EN P/R |
| Solar Keymark |
011-7S1617 F |


Legend:
tm – average temperature of liquid
ta – ambient temperature
G – solar irradiance