State of the art of solar cooking: An overview

Panwar, N. L.; Kaushik, S.C.; Kothari, Surendra

doi:10.1016/j.rser.2012.03.026

Cited by 118 publications

(34 citation statements)

References 80 publications

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“…Energy assessment ignores reductions in energy potential during a process and does not quantify the usefulness or quality of the energy. Therefore, it is appropriate for the sizing and investigating of the systems that use only one form of energy (Larson and Cortez 1995;Panwar, Kaushik, and Kothari 2012a).…”

Section: Concept Of Energy and Exergymentioning

confidence: 99%

Energetic and exergetic performance assessment of solar cookers with different geometrical designs

Cüce

Cuce

2013

International Journal of Ambient Energy

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In our previous paper, a thorough review of the available literature on solar cookers has been presented. In this paper, a thermodynamic performance assessment of solar cookers of different geometries has been carried out. In general, the study has aimed at providing a complete performance evaluation criterion for solar cookers irrespective of their geometrical design and also comparing the thermal performances of different types of solar cookers. Recent experimental studies considering conventional and novel geometrical constructions have been investigated in detail for data acquisition. Peak energy and exergy outputs, energetic and exergetic efficiencies, heat loss coefficients, cooker quality factors and portability factors have been obtained for each cooking design and the results have been analysed. Finally, some recommendations have been made to enhance the performance parameters of solar cookers. NomenclatureA aperture area of solar cooker (m 2 ) A f focal area of solar cooker (m 2 ) C hl heat loss coefficient of solar cooker (W/m 2 • C) C pf portability factor of solar cooker (J/kg) c pw specific heat capacity of water (J/kg • C) C qf quality factor of solar cooker G solar intensity (W/m 2 ) E in amount of energy received by solar cooker (J) E m peak energy output of solar cooker (J) E out energy output of solar cooker (J) Ex al average exergy loss (J) Ex in exergy input to solar cooker (J) Ex l exergy lost (J) Ex m peak exergy output of solar cooker (J) Ex out exergy output of solar cooker (J) m w mass of water in the cooking vessel (kg) T amb ambient temperature (K) T sun surface temperature of the sun (K) T wf final water temperature ( • C) T wi initial water temperature ( • C) W c weight of solar cooker (kg) t period of time (s) T wa the difference in instantaneous water temperature and ambient temperature ( • C) η en energy efficiency (%) η ex exergy efficiency (%) * Corresponding author. Email: laxec5@nottingham.ac.uk η pe peak energy efficiency (%) η pex peak exergy efficiency (%)

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Section: Concept Of Energy and Exergymentioning

confidence: 99%

Energetic and exergetic performance assessment of solar cookers with different geometrical designs

Cüce

Cuce

2013

International Journal of Ambient Energy

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“…Though different types of classification of solar cookers are reported in literature [5][6][7][8], they are broadly categorised into two types, the box type and the concentration type. In the box type solar cookers, the solar radiation enters directly through the glass window for cooking the food.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of a solar domestic cooking unit integrated with thermal energy storage system

Kumaresan

Vigneswaran

Esakkimuthu³

et al. 2016

Journal of Energy Storage

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“…Existing solar cookers have been classified based on their shapes, reflection techniques or their cooking methods. Panwar et al [5] presented a comprehensive classification based on shape and reflection technique as shown in Fig. 2.…”

mentioning

confidence: 99%

A Novel Indirect Parabolic Solar Cooker

Craig¹,

Dobson²,

Niekerk³

2017

JEE

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Abstract:The continuous increase in global demand and cost of electricity are some of the reasons that solar cooking has received much attention recently. Another factor which has also contributed to the acceptance of solar cookers is global campaigns against actions that contribute to climate change. Various types of solar cookers are currently in existence, these are box, panel and parabolic cookers. Some solar cookers only function when the cooking section is placed under direct sunshine, while others have been modified to cook without directly exposing their cooking section to the sun. Most solar cookers face similar challenges, and these include, exposure of users to sun, inability to function at night or when there is no sunshine, low utilization efficiency and technical complexities. This report presents an indirect parabolic cooker that eliminates the identified solar cooker challenges. The cooker uses a parabolic reflector to focus the sun rays to a frustum shaped receiver that was placed at its focus. The cooker has an insulated cooking/heat storage tank which was separated from the dish and cavity receiver system. The heat transfer fluid was distributed through the system with the aid of high temperature flexible hoses. Several cooking tests including water boiling and pancake baking were done, an extensive analysis of cooking based on the international testing procedures for solar cookers was also carried out. This solar cooker had a utilization efficiency of 39%, an overall calculated exergy efficiency of 0.05% and an average characteristic boiling time of approximately 13 minutes/kg. The manufactured solar cooker in this study was used for family cooking.

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State of the art of solar cooking: An overview

Cited by 118 publications

References 80 publications

Energetic and exergetic performance assessment of solar cookers with different geometrical designs

Energetic and exergetic performance assessment of solar cookers with different geometrical designs

Performance assessment of a solar domestic cooking unit integrated with thermal energy storage system

A Novel Indirect Parabolic Solar Cooker

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