Instrumentation error analysis of a box-type solar cooker

Purohit I & Purohit P (2009). Instrumentation error analysis of a box-type solar cooker. Energy Conversion and Management 50 (2): 365-375. DOI:10.1016/j.enconman.2008.09.030.

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Abstract

In order to certify the performance of a box-type solar cooker, thermal performance is evaluated in terms of two figures of merit viz. F1 and F2 (IS 13429:2000). The acceptable criterion to make the solar cooker eligible for ISI mark is that the value of F1 should not be less than 0.12, and that of F2 should be greater than 0.40. Further, the solar cooker is classified as Grade A if the value of F1 is determined to be 0.12 or higher; otherwise, the solar cooker is classified as Grade B. Determination of F1 and F2 comprises measurements of the temperature of cooking tray, water temperature and ambient air, solar irradiance, and other associated parameters. The effect of accuracy obtained in these measurements assumes significance in the perspective of grading of solar cookers.

In the present work, an attempt has been made to analyze the effect of instrumentation on F1 and F2, which is normally employed for testing and standardization of solar cookers. The analysis is supported by a large number of outdoor tests conducted on a box type solar cooker under stagnation as well as load test conditions. It is observed that the variation of absolute value of error in F1 and F2 could be in the range of 0.002-0.003 and 0.015-0.033, respectively. This corresponds to errors of the order of 2.5-3.0% in the evaluation of F1 and 5.0-6.0% in F2.

Item Type: Article
Uncontrolled Keywords: Box type solar cooker; Stagnation test; Load test; Statistical analysis; Instrumentation error; Attainable accuracy; Absolute error
Research Programs: Atmospheric Pollution (APD)
Bibliographic Reference: Energy Conversion and Management; 50(2):365-375 (February 2009)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:42
Last Modified: 07 Sep 2016 12:49
URI: http://pure.iiasa.ac.at/8903

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