Janjai (2004) How Accurate is the Measurement of Solar Terrestrial Radiation Using a Sensor-based Silicon Photovoltaic Pyranometer

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How Accurate is the Measurement of Solar Terrestrial Radiation Using a Sensor-based Silicon Photovoltaic Pyranometer

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CONTRIBUTORS:

	Editor:	Commins, Terry (King Mongkut's University of Technology Thonburi)
	Author:	Janjai, Serm (Silpakorn University)

PROCEEDINGS TITLE:

Sustainable Energy and Environment

YEAR:

2004

PUB TYPE:

Conference Paper in Proceedings

PAGES:

1 - 2

SUBJECT(S):

Solar radiation; photovoltaic; pyranometer; Thailand

DISCIPLINE:

Engineering and Applied Sciences

HTTP:

http://www.thaiscience.info/Article%20for%20ThaiScience/Article/3/Ts-3%20how%20accurate%20is%20the%20measurement%20of%20solar%20terrestrial%20radiation%20using%20a%20sensor-based%20silicon%20photovoltaic%20pyranometer.pdf

LANGUAGE:

English

PUB ID:

103-431-718 (Last edited on 2006/12/20 00:23:04 US/Mountain)

SPONSOR(S):

ABSTRACT:
There are many factors that influence the measurement of solar terrestrial radiation using a silicon photovoltaic
pyranometer. This paper illustrates deviation of the monthly sensitivity of a typical silicon photovoltaic pyranometer by simulation using Sandia National Laboratory’s model, characteristics of the pyranometer of King Mongkut’s University of Technology Thonburi (KMUTT) and solar radiation data for Bangkok. The simulated results show that measurement of monthly insolation using this pyranometer has an error within 0-2 % and if calibrated following the procedure in ISO9847, the silicon photovoltaic pyranometer
might have a difference within + 2%, depending on the date and weather at the time of calibration. We have recommended that the appropriate conditions for calibration factor for measuring solar radiation in the Bangkok area should be at air mass 1.4, ambient temperature 31o C and both direct and diffuse irradiance have the same weight in the response.

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