Abstract
This study investigated the techno-economic-environmental feasibility of solar heating systems for supplying power to detached buildings in the rural context. A hybrid solar–electromagnetic heating technology and a time-of-use pricing-based energy management technique were proposed. The developed model was validated through experiments on solar collectors and the phase-change storage tank based on the proposed time-of-use strategy. A comprehensive techno-economic-environmental single-criterion optimization scheme was constructed through coupled modeling and optimizations with TRNSYS and GENOPT. Furthermore, the comprehensive evaluation model was used to conduct a multiattribute assessment based on 13 specific sub-indicators of the studied cases. The post-operation costs and life cycle cost of the existing system under time-of-use pricing reduced by 12.2% and 7.16%, respectively. The case with optimal configuration, that is, life cycle cost optimization goal, exhibited levelized cost of energy and solar fraction of 0.82 RMB/kW·h and 64%, respectively. In severe cold regions of China with general abundant solar resource, cases utilizing a high solar energy proportion exceeding 64% perform better. This comprehensive evaluation of different scenarios provides valuable references to stakeholders for advancing renewable energy utilization in sustainable, low-carbon heating systems in rural areas of China.
Published Version
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