Combined heat loss analysis of trapezoidal shaped solar cooker cavity using computational approach

Nayak, Jayashree; Agrawal, Mohit; Mishra, Saumyakanta; Sahoo, Sudhansu S.; Swain, R. K.; Mishra, Ashutosh

doi:10.1016/j.csite.2018.03.009

Cited by 23 publications

(6 citation statements)

References 13 publications

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“…The behavior of the velocity is explained by the difference in density of the fluid. The hot fluid tends to rise because of its low density and the walls, being airtight and the buoyancy effects, we see this phenomenon of air circulation in the solar cooker which is in agreement with the results of the literature even if the number of vortices formed is more than those observed in the work of Nayak [9]. This could be explained by the larger dimension of the system studied here.…”

Section: Temperature and Velocity Fieldssupporting

confidence: 92%

See 1 more Smart Citation

Finite Element Modeling of a Solar Box Cooker: Temperature and Fluid Velocity Distributions

Diatta¹,

Bassene²,

Touré³

2021

ENG

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Section: Temperature and Velocity Fieldssupporting

confidence: 92%

“…To reduce the cooking time too, the modeling and the numerical simulation of the operation of solar cookers were carried out with finned cooking vessel, a new shape of cooking utensil [6] [7] [8]. Another study focuses on the analysis of heat loss from a trapezoidal shaped solar cooker cavity [9].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of a Solar Box Cooker: Temperature and Fluid Velocity Distributions

Diatta¹,

Bassene²,

Touré³

2021

ENG

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“…Heat storing doesn't solve the whole purpose as stored heat should not be dissipated. This heat dissipation may occur due to various heat losses [49]. Therefore to prevent these heat losses, a proper insulation is required [8].…”

Section: Heat Losses and Insulationmentioning

confidence: 99%

Comparative study of heat storage and transfer system for solar cooking

Gawande

Ingole

2019

SN Appl. Sci.

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To run the Solar energy appliances, the continuous availability of solar energy is an essential. The Solar appliances are run by using solar energy either from PV cell or solar collector. Both of these devices require continuous solar rays. In order to use the solar energy after sunshine, it requires being stored first and then can be transferred to the appliances. One of the focused applications by using solar energy is the solar cooking. A Lot of research is going on the use of solar energy for cooking. But still, some extensive technique needs develop for easily usable systems. The various solar cookers are discussed to insist the need for development of solar storage systems for efficient cooking. This paper presents the comparative study of heat storage and transfer systems for solar cooking. The key aspects like, methodology to develop the heat storage system, requirements and properties of heat storage materials, need of insulations and their types are addressed. Some most usable materials are also analyzed. Keywords Heat storage system • PCM • Solar cooking List of symbols PCM Phase change material HTF Heat transfer fluid x Fraction melted Cp Specific heat (kJ/kg K) Csp Average specific heat between T1 and Tm (kJ/ kg K) Clp Average specific heat between Tm and T 2 (kJ/ kg K) dt Change in temperature in °C m Mass of heat storage medium (kg) Q Quantity of heat stored (kJ) T 2 Final temperature (°C) T 1 Initial temperature (°C) Tm Melting temperature (°C) hm Heat of fusion per unit mass (kJ/kg) VSI Vacuum super insulation VIM Vacuum insulation material VIP Vacuum insulation panel NIM Nano insulation material

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“…On the other side, cavities are heavily used in a variety of applications and machinery like HVACs [26,27], heat exchangers [28,29], renewable energies [30,31], etc. It appears that one of the early investigations pertaining to fluid flow within enclosed spaces was conducted by Patterson and Imberger [32].…”

Section: Introductionmentioning

confidence: 99%

Studying Alumina–Water Nanofluid Two-Phase Heat Transfer in a Novel E-Shaped Porous Cavity via Introducing New Thermal Conductivity Correlation

Armaghani,

Sepehrnia,

Molana

et al. 2023

Symmetry

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Investigating natural convection heat transfer of nanofluids in various geometries has garnered significant attention due to its potential applications across several disciplines. This study presents a numerical simulation of the natural convection heat transfer and entropy generation process in an E-shaped porous cavity filled with nanofluids, implementing Buongiorno’s simulation model. Analyzing the behavior of individual nanoparticles, or even the entire nanofluid system at the molecular level, can be extremely computationally intensive. Symmetry is a fundamental concept in science that can help reduce this computational burden considerably. In this study, nanofluids are frequently conceived of as a combination of water and Al2O3 nanoparticles at a concentration of up to 4% by volume. A unique correlation was proposed to model the effective thermal conductivity of nanofluids. The average Nusselt number, entropy production, and Rayleigh number have been illustrated to exhibit a decreasing trend when the volume concentration of nanoparticles inside the porous cavity rises; the 4% vol. water–alumina NFs yield 17.35% less average Nu number compared to the base water.

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Combined heat loss analysis of trapezoidal shaped solar cooker cavity using computational approach

Cited by 23 publications

References 13 publications

Finite Element Modeling of a Solar Box Cooker: Temperature and Fluid Velocity Distributions

Finite Element Modeling of a Solar Box Cooker: Temperature and Fluid Velocity Distributions

Comparative study of heat storage and transfer system for solar cooking

Studying Alumina–Water Nanofluid Two-Phase Heat Transfer in a Novel E-Shaped Porous Cavity via Introducing New Thermal Conductivity Correlation

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