Solar Collector Specifications - Baxi Solarflo Installation Manual

Fig. 2
B
Table of dimensions (mm)
20 tube 30 tube
A 1418 2127
B 1996 1996
C 1475 2184
D 97 97
All dimensions shown in mm
Fig. 3
240
200
160
120
80
40
0
0 2
© Baxi Heating UK Ltd 2008
4
C
A
4 6
Flow Rate (l/min)
2.0

Solar collector specifications

2.1 Technical Data
D
Gross area:
Net area:
Weight:
Fluid Volume:
Pressure:
Absorption:
Emission:
Stagnation temp:
Glass:
Light transmittance: >90.8% ± 2%
Coefficients of efficiency (20 tubes)
(determined in the sun simulator SUSI 1)
η = η o - a 1 .(t m - t a )/G - a 2 .(t m - t a )
Based on:
η o =
a 1 =
a 2 =
Coefficients of efficiency (30 tubes)
(determined outdoor)
η = η o - a 1 .(t m - t a )/G - a 2 .(t m - t a )
Based on:
η o =
a 1 =
a 2 =
8
20 tube 30 tube
2.83m 2 3.23m 2
2.00m 2 3.00m 2
54.8 kg 81.4 kg
3.8 litres 5.6 litres
8 bar 8 bar
95% 95%
5% 5%
286°C 286°C
65mmØ Low-iron - transmission 0.92
2 /G
aperture area absorber area
0.773 0.830
1.43 W/m 2 K 1.53 W/m
0.0059 W/m 2 K 0.0063 W/m
2
/G
aperture area absorber area
0.779 0.832
1.07 W/m 2 K 1.14 W/m
0.0135 W/m 2 K 0.0144 W/m
2 K
2 K
2 K
2 K