Performance evaluation on solar box cooker with reflector tracking at optimal angle under Bahir Dar climate

Weldu, Amanuel; Zhao, Li; Deng, Shuai; Mulugeta, Nigussie; Zhang, Ying; Nie, Xianhua; Xu, Weicong

doi:10.1016/j.solener.2019.01.071

Cited by 44 publications

(14 citation statements)

References 14 publications

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“…In addition, in terms of heating time and temperature, by comparing with the best thermal yields of solar cookers in the literature of the box type 24 and of the cylindrical type, 19 the maximum yields achieved are of the order of 39%, [25][26][27] using our suggested control, the improvement can reach 89%.…”

Section: Application: Solar Cookermentioning

confidence: 94%

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Alternating multi‐stage maximum power point tracking controlled parallelled photovoltaic systems for “solar cooker”

Atmane

Moussaoui

Kassmi

et al. 2021

Circuit Theory & Apps

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In this paper we propose the control of a parallel multi-stage photovoltaic (PV) system using a reliable and precise Maximum Power Point Tracking (MPPT) control strategy. This technique is based on the acquisition of the electrical output quantities (voltage, current, and power), common to DC/DC converters, and the control of the power switches, in alternation. In the case of two stages, during the time t i , converter 1 is regulated in real time by the MPPT control, and the second converter keeps the previous MPPT optimization parameters (t i À 1 ). During the following time t i + 1 , converter 1 retains the previous MPPT optimization parameters (t i ) and converter 2 is regulated in real time by the MPPT controller. The proposed technique is experimented on a photovoltaic system that feeds a solar cooker. This system is formed by a thermal resistance, two types of PV panels (200 and 230 W) and two DC/DC converters. Compared to the classical technique (instantaneous control), the results obtained show a significant performance and improvements: Convergence speed towards the maximum power point PPM of 48%, variations the electrical quantities gaps (current, voltage, power) at the input and output of the DC/DC converters by a factor of 2.46, electrical energy production of 4%, plate heating temperature of 27.3%, and an efficiency of 5%. The temperatures of the thermal resistances are validated by the thermal models established during this work. The improvements in DC/DC converter performance and solar cooker heating temperature are attributed, on the one hand, to the nature of the proposed MPPT control, which reduces the dispersion of electrical quantities at the input and output of the DC/DC converters, and, on the other hand, to the rapid heating of the solar cooker by the electrical energy produced by the photovoltaic panels.

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Section: Application: Solar Cookermentioning

confidence: 94%

“…However, in the case of conventional thermal cookers, the efficiency of the cookers is very limited by the slow temperature rise in the cooker. 24…”

Section: Application: Solar Cookermentioning

confidence: 99%

Alternating multi‐stage maximum power point tracking controlled parallelled photovoltaic systems for “solar cooker”

Atmane

Moussaoui

Kassmi

et al. 2021

Circuit Theory & Apps

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“…Other broader and in-depth studies on box-type solar cookers in terms of their operation, geometry, materials, and parameters that relate to their variables have been presented by other authors. [6,7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Solar Cookers Box-Type with inner reflectors by using CFD

Terres

Chávez²,

Lizardi³

et al. 2022

J. Phys.: Conf. Ser.

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This work shows the results and evaluation of a solar cooker box-type by using CFD. The values indicate where the highest temperature values happen inside the solar cooker. Also, values for density and airspeed were obtained. These results show where and how density and airspeed have the most important values during the water heating process. The effects of convection as a consequence of the temperature difference can guide possible improvements in future designs of solar cookers since if geometric shapes are used that take advantage of this heat transfer mechanism, the solar heating process can be better.

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“…Furthermore, Guidara et al [28] used four outer reflectors to improve a SBC's performance and reported that cooking times for rice and beans are 72 and 107 min, respectively. Weldu et al [29] reported that tracking reflectors can increase the cooker thermal efficiency by 9.6% compared to fixed reflecting mirrors. The utilization of an aluminum receiver instead of stainless steel would improve thermal efficiency by 15.4%.…”

Section: Introductionmentioning

confidence: 99%

Thermal investigation of a solar box-type cooker with nanocomposite phase change materials using flexible thermography

et al. 2021

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Performance evaluation on solar box cooker with reflector tracking at optimal angle under Bahir Dar climate

Cited by 44 publications

References 14 publications

Alternating multi‐stage maximum power point tracking controlled parallelled photovoltaic systems for “solar cooker”

Alternating multi‐stage maximum power point tracking controlled parallelled photovoltaic systems for “solar cooker”

Analysis of a Solar Cookers Box-Type with inner reflectors by using CFD

Thermal investigation of a solar box-type cooker with nanocomposite phase change materials using flexible thermography

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