Determination of solar insolation in Michael Okpara University of Agriculture Umudike using a photoresistor

Asiegbu, Anyalewechi Daniel; Nduka, OA

doi:10.4314/gjpas.v12i2.16598

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Operation and Calibration1

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2014

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“…To do this, the panel housing the solar cell was mounted on the solar stand about 1.5m above the ground level in an open field. The in-built inclinometer of the stand was used to incline the cell at the angle of the latitude of Umudike which is about 5 o N, [2,9].…”

Section: Operation and Calibrationmentioning

confidence: 99%

Design, Construction and Calibration of a Solar Radiation Measuring Meter

Daniel

Odinakachi

2014

Review of Advances in Physics Theories and Applications

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A digital solar radiation measuring instrument has been designed, constructed and calibrated. It incorporates a small rectangular silicon photocell as the sensor. On exposure to solar radiation, electromotive force which is proportional to radiation intensity is developed within the circuit. The device correlates voltage developed with available solar intensity. A standard solarimeter was therefore used to calibrate the device to translate the unit of its reading from Volt to Watt per square meter. Intensity spread obtained with respect to time of day agrees with various studies conducted previously on tropical environments. Results obtained generally conform with those obtained by Medugu, et al. [1] and Chiemeka [2]). With a calibration conversion factor of 877.19(V -1.71) Wm -2 , the device can be used to collect reliable irradiace data which are both comparable and compatible with that of a standard solarimeter.

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Section: Operation and Calibrationmentioning

confidence: 99%