Finite element approach for stress-strain analysis in an ohmic-heating pressure cooker (OHPC) and its energy-exergy evaluation

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments Pub Date : 2025-02-25 DOI:10.1016/j.seta.2025.104254

Manibhushan Kumar , Pramod K Prabhakar , Brijesh Srivastava

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Abstract

This study aimed to develop an ohmic heating pressure cooker (OHPC) and evaluate its thermal performance based on energy-exergy analysis. OHPC is an innovative approach to cooking food with reduced time and energy efficiency. The thermos-mechanical stress patterns on the wall were examined using FEA-based software. Saltwater (SW) (0.02, 0.04, 0.06, and 0.08 % w/v) was considered as the food model, and EFS of 20, 30, and 40 V/cm was used in the OHPC performance experiment. The SW’s electrical conductivity increased linearly with temperature, and the EFS impact was negligible. The higher heating rate reduced processing time from 36 min to 2 min at higher SW concentrations and EFS. Both energy (77–98 %) and exergy efficiency (52 – 87 %) increase with salt concentration and EFS. Destruction exergy was calculated from exergy and entropy balance equations and showed close agreement. The developed OHPC can cook various food products that contain electrically conductive mediums, such as liquid and solid-liquid foods. This technology also promises to provide shorter cooking time due to the high volumetric heating rate and enhance energy-exergy efficiency.

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.