真空隔热使节能家用烹饪炉成为可能-一项经过验证的数值研究

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-09-30 DOI:10.1016/j.icheatmasstransfer.2025.109743

Dron Kaushik, Harjit Singh

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引用次数: 0

摘要

英国和美国加起来大约有1.09亿台家用烤箱。随着烤箱的最大能耗限制越来越严格，制造商正在寻找技术解决方案来满足监管要求。人们越来越期待先进的真空绝缘技术在解决提供节能设备的挑战方面发挥重要作用。在当前的研究中，我们建立并验证了一个基于COMSOL multiphysics的全尺寸家用电烤箱模型，以评估一系列绝缘材料的有效性，包括珍珠岩真空绝缘板（VIP/VIP）、硅板和矿棉。采用k-ε、k-ω和SST三种湍流模型求解了烤箱蒸煮腔内的气流。烘箱腔温保持在250℃。对不同保温工况下的蒸煮能耗进行了预测，其中膨胀珍珠岩VIP保温炉能耗最低，为685 Wh，矿棉保温炉能耗最差，为1384 Wh。此外，VIP保温使腔内温度分布更加均匀，最大空间变化为16.9 K。据预测，VIP隔热烤箱在美国和英国每年可以节省1540万吨二氧化碳当量。

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Vacuum insulation enabled energy efficient domestic cooking ovens – A validated numerical study

There are approximately 109 million domestic cooking ovens in the UK and USA combined. As maximum energy consumption limits for ovens get stricter, manufacturers are looking for technological solutions to meet regulatory demands. Advanced vacuum insulation technology is increasingly expected to play a significant role in addressing the challenge of delivering energy-efficient equipment. In the current study, we built and validated a full-scale COMSOL Multiphysics-based model of a typical electric domestic cooking oven to assess the effectiveness of a selection of insulation materials including perlite based Vacuum Insulation Panels (VIP/VIPs), silica board and mineral wool. Three turbulent flow models k-ε, k-ω and SST were used to solve for airflow inside the oven cooking cavity. The oven cavity temperature was maintained at 250 °C. The cooking energy consumed was predicted for a range of insulation scenarios with the expanded perlite VIP insulated oven performing best with the lowest energy consumption of 685 Wh and the mineral wool insulated oven the worst with 1384 Wh. Additionally, VIP insulation resulted into a more uniform temperature distribution with a maximum spatial variation of 16.9 K inside the cavity. It is predicted that VIP insulated ovens can save 15.4 MtCO2eq/year in the USA and the UK.

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.