Efficient orientation impacts of box-type solar cooker on the cooker performance

Algifri, A. H.; Al-Towaie, Hussain A.

doi:10.1016/s0038-092x(00)00136-5

Cited by 51 publications

(17 citation statements)

References 8 publications

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“…Solar cookers having varying cover thickness have also been tested [3]. Research has also been done on double glazed solar oven which takes radiation only from the top surface [4], [5]. A simple box type solar oven has been created in Egypt and its performance was studied [6].…”

Section: Introductionmentioning

confidence: 99%

Performance Modeling and Parametric Analysis of a Double Glazed Solar Oven

Badar¹,

Zaryab²,

Abedin³

et al. 2015

JOCET

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Abstract-This paper investigates the thermal performance of a unique box type solar oven whose five sides are exposed to ambient and provisions are also provided to install the reflectors to enhance the intensity of incident solar radiation on the oven. Experiments were performed where temperatures attained inside the box cavity are recorded on different days and times of the day corresponding to various intensities of available solar radiation. A steady sate heat transfer numerical model of the solar oven without reflectors is also developed based on six individual thermal resistance networks which account for the heat losses through each flat-side of the oven box and a good agreement with the experimental data is achieved. A parametric study based on numerical calculations and experiments is then carried out to study the effects of various parameters on oven's thermal performance, e.g. number of glazings, distance between glazings and box, type of absorber coating, etc. Higher box temperature is attained using double glazing than single glazing. As compared to black paint, selective surface coating results in significantly higher oven temperatures (up to 40 o C). Plate spacing of 20-30 mm is found to be optimum distance between oven box and glass covers.Index Terms-Solar oven, oven box temperature, reflectors, overall heat transfer coefficient.

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Section: Introductionmentioning

confidence: 99%

Performance Modeling and Parametric Analysis of a Double Glazed Solar Oven

Badar¹,

Zaryab²,

Abedin³

et al. 2015

JOCET

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“…Algifri and Al-Towai, [8] proved with some innovative algorithms that the performance of a solar cooker could be improved by 40% in Aden city (Yemen) for higher elevation angle and 70% for lower elevation angles. Moreover, it was shown in [9][10] that the amount of solar energy captured by a tilted collector could be increased by more than 40% by adjusting the tilt angle on a seasonal basis.…”

Section: Introductionmentioning

confidence: 99%

Low Cost Two-Axis Automatic Solar Tracking System

Acakpovi¹,

Yaw²,

Babbo³

2015

CAE

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This paper presents the design and construction of a two-axis solar tracking system. The system is designed to track the movement of the sun in order to get maximum power from the solar panels as they follow the direction of the sun. Though existing tracking systems are available in the market, limited purchasing capabilities in developing countries has been the main drive behind the device presented in this paper. The system employs Light Dependent Resistors to sense the position of the sun which is directly communicated to a micro-processing board with ATmega328 microcontroller. The micro-processing board therefore commands a set of two stepper motor to re-orient the panel either horizontally or vertically in order to stay perpendicular to the sun rays. The design was constructed successfully and tested to determine the increase in efficiency. Evaluation results show that the new system performs 10.7% better than the static solar system. Moreover the implementation cost of $132.36 is lower than many other existing trackers with the same capabilities available in the market.

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“…The researchers in [6] obtained a mathematical model for a box-type solar cooker, which helps to establish the elements of the parameters and their influence on the heating process for their solar cooker. In [7], the authors studied the effects of using a flat reflector on a box-type solar cooker. Their results establish advances in increasing the heating temperature and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Thermal Model of a Solar Cooker Jorhejpataranskua

et al. 2014

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In this paper we obtain a mathematical thermal model to explain the behavior of the solar cooker: "Jorhejpataranskua". The model is shown in terms of a coupled system of three non-linear differential equations. We calculate temperatures for the fluid, the reflectors and the container of the solar cooker, and then compare the numerical results obtained with the model to measurements in field-testing operations and obtained results that agree with the experimental data. Finally, we use numerical results to calculate the cooking power and standardized cooking power of the solar cooker for two different containers.

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Efficient orientation impacts of box-type solar cooker on the cooker performance

Cited by 51 publications

References 8 publications

Performance Modeling and Parametric Analysis of a Double Glazed Solar Oven

Performance Modeling and Parametric Analysis of a Double Glazed Solar Oven

Low Cost Two-Axis Automatic Solar Tracking System

Thermal Model of a Solar Cooker Jorhejpataranskua

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