Naslov
The Photovoltaic Solar Radiation Sensor

Autori
Firak, Mihajlo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Energy and the Environment 2004 / Franković, B. - Rijeka, 2004, 179-186

Skup
Energy and the Environment 2004

Mjesto i datum
Opatija, Hrvatska, 27.10.2004. - 29.10.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
solar; photovoltaic; sensor; pyranometer

Sažetak
The use of solar energy as a supplement for fossil fuels becomes every day more and more evident. A lot of laboratories around the globe develop different solar energy conversion equipment. One of the basic instruments that they need is radiation sensor (pyranometer), usually very expensive instrument. It is the aim of this work to present the working principle, design, construction and calibration of the simple and cheap global solar radiation sensor. This sensor is based on commercially available photovoltaic cell (PV or solar cell). The output electrical current from the cell depends upon solar radiation, working cell temperature, the influence of the time-of-day dependent solar spectrum and solar angle-of-incidence. Because of that, the cell output should be properly compensated. In order to study the temperature influence on the PV sensor it was exposed to the stream of heated air at the constant artificial light. The PV cell temperature is measured by tiny thermocouple between the cell and the cell copper heat sink, to which the cell is attached. Then the temperature compensation could be done numerically using measured output voltage and temperature data. The compensation due to solar spectrum and angle-of-incidence changes are also discussed but not concretized. This is left for future work because of measurement complexity and need for different wheather conditions that both request long measurements period. The first provisional PV sensor calibration is provided by on-site comparison with the commercial Schenk pyranometer. It is concluded that presented sensor and the method of the measured data interpretation is acceptable. That includes that measuring uncertainty of the solar radiation flux is (+/-) 5%.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA