II. İLERİ TEKNOLOJİLER ÇALIŞTAYI (İTÇ 2011) - Bilgesam

68
According to the cumulative energy demand calculations resulting from Sima Pro,
overall energy required for Selektif production is 39,25 MJ/m 2 . The annual average
total insolation duration in Turkey is 2640 hours (7,2 hours/day) (EIE data)
Average annual solar radiation is 1311 kWh/m²-year (3,6 kWh/m²-day). It means:
3.6 x 3600 = 12960 kJ/m² with 80% efficiency, 10368 kJ/m² may obtained with
solar collector having selective absorber.
Energy payback-time can be defined as the time necessary for solar absorber to
collect the energy equivalent to that used to produce it . So: 39250/10368=3.8 days
Greenhouse gases emission from cradle to grave is:
64900 kg CO2/200000 m 2 = 0,325 kg / m 2
The study focused on the calculation of energy and CO2 payback time shows the
great nvironmental convenience of this technology.
We could also conclude that energy directly used during the production process and
installation is only 15% of the overall consumption, another 6% is consumed for
transports during the LC phases.
The remaining percentage is employed for theproduction of the raw materials used
as process inputs.
Consequently, recycling of the raw materials is very important.
References
F.KADIRGAN, M.SÖHMEN, I.E. TÜRE, S.SÜZER, J.WETHERILT, A. YAZAR, Renewable
Energy, 10 (1997) 203.
S.SUZER, F.KADIRGAN, M.SOHMEN, J. WETHERILT, E. TURE, Solar Energy and
Materials, 52 (1998) 55.
F. KADIRGAN, H. METE SOHMEN, Recent Advances in Solar Energy Technology, MRC,
1997, 27.
S. SUZER, F. KADIRGAN, Recent Advances in Solar Energy Technology, MRC, 1997, 35.