Testing of box-type solar cooker: Second figure of merit F2 and its variation with load and number of pots

Mullick, S.C.; Kandpal, Tara C.; Kumar, Subodh

doi:10.1016/s0038-092x(96)00116-8

Cited by 58 publications

(30 citation statements)

References 1 publication

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“…If a solar oven has F1 greater or equal to 0.12, the oven is classified as A-Grade but if F1 is less than 0.12, the oven is classified as B-Grade [6] [7]. Therefore, this oven is a B-Grade oven.…”

Section: Discussionmentioning

confidence: 99%

Construction and Testing of One-Reflector Solar Oven for Solar Panel Lamination

Ohajianya¹,

Abumere²,

Osarolube³

et al. 2014

IOSRJAP

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Section: Discussionmentioning

confidence: 99%

Construction and Testing of One-Reflector Solar Oven for Solar Panel Lamination

Ohajianya¹,

Abumere²,

Osarolube³

et al. 2014

IOSRJAP

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“…F 1 and F 2 are generally calculated, as given by Mullick [1]. The first FOM, F 1 is defined as the ratio of optical efficiency to the heat loss factor by bottom absorbing plate and is a measure of the differential temperature gained by the absorbing plate at a particular level of solar insolation.…”

Section: Methodsmentioning

confidence: 99%

An Exergy Based Unified Test Protocol for Solar Cookers of Different Geometries

Kumar¹,

Ganesan²,

Gupta³

2011

Linköping Electronic Conference Proceedings

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Abstract:It is good for the consumer to have solar cookers of various varieties in terms of geometrical designs, performance and price but it is a ch allenge to develop a u niform test standard for evaluating the thermal performance of the cookers irrespective of their geometrical construction. Due to the lack of uniform test protocol, consumer cannot compare the quantitative performance of the cookers of different configuration and become confused. For this end, we plotted graphs between exergy output and temperature difference, for solar cookers of different designs and it resembled a parabolic curve for each design. The peak exergy (vertex of the parabola), can be accepted as a measure of devices' fuel ratings. The ratio of the peak exergy gained to the exergy lost at that instant of time can be considered as the quality factor of the solar cooker. Besides, the exergy lost is found to vary linearly with temperature difference irrespective of the topology of the device and the slope of the straight line obtained through curve fitting represents the heat loss coefficient of the cooker. The proposed parameters can lead to development of unified test protocol for solar cookers of diversified designs.

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“…These are defined as F 1 and F 2 [20,21]. F 1 (measured in m 2 K/W) is the ratio of optical efficiency to the heat loss factor by the bottom absorbing plate and is a measure of the differential temperature gained by it at a particular level of solar insolation.…”

Section: Determination Of the First And Second Figures Of Meritmentioning

confidence: 99%

Determination of Performance Measuring Parameters of an Improved Dual Paraboloid Solar Cooker

Farooqui

2017

International Journal of Photoenergy

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An experimental investigation into the performance evaluation of an improved dual reflector foldable paraboloid solar cooker has been reported, along with its energy and exergy analysis. The best attribute of this lightweight and low-cost solar cooker is its high performance coupled with the ease of handling. The cooker utilizes two paraboloid reflectors made out of Mylar-coated fiberglass dishes, each having a diameter of 90 cm and focal length of 105 cm. The total intercepted radiation energy is 1.08 kW under standard test conditions. Stagnation temperatures of up to 330°C and cooking temperatures of up to 290°C have been attained with load. Altogether, 9 experiments have been performed with and without load. Loaded tests have been conducted with water and vegetable oil. Results indicate an average cooking power of 485 W, peak exergy gain of 60.53 W, quality factor of 0.077, and a high product of temperature difference gap at half peak power to peak power of 4364.33 W·K. The maximum exergy output power attained was 70 W, while maximum exergy efficiency was 8-10%. All performance measuring parameters indicate that it is a high performance solar cooker for rural and urban communities and is suitable for all types of oil-and water-based cooking.

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Testing of box-type solar cooker: Second figure of merit F2 and its variation with load and number of pots

Cited by 58 publications

References 1 publication

Construction and Testing of One-Reflector Solar Oven for Solar Panel Lamination

Construction and Testing of One-Reflector Solar Oven for Solar Panel Lamination

An Exergy Based Unified Test Protocol for Solar Cookers of Different Geometries

Determination of Performance Measuring Parameters of an Improved Dual Paraboloid Solar Cooker

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