To mitigate CO₂ emission, the utilization of renewable resources is expected to grow with the wide and active implementation of electrified energy systems. Process industry, one of the most energy-intensive sectors, is strongly demanded to keep up with the trend to improve sustainability. The application of Power-to-Heat technologies to industrial energy systems would bring enormous benefits to the environment, but a systematic design methodology to evaluate the feasibility of electrification in practice has not been fully discussed. This study proposes a framework to evaluate the feasibility of electrification based on Heat Integration. The cost-effective and/or energy-efficient technology is selected by analyzing different characteristics of several power-to-heat technologies, with which the implementation strategy of electrification is designed based on the electrification potential. Economics of electrified energy systems are evaluated, which is compared with conventional ones based on burning fossil fuels. A case study is presented to demonstrate the applicability of the proposed design methodology. From the results, it is indicated that the electrification with a heat pump and an electrode boiler is a promising strategy, while the introduction of an electric heater becomes economically viable at the 23% of considerable reduction in the cost of renewable electricity.

减少 CO ₂随着电气化能源系统的广泛和积极实施，可再生资源的利用有望增长。过程工业是能源密集型行业之一，强烈要求跟上提高可持续性的趋势。Power-to-Heat 技术在工业能源系统中的应用将为环境带来巨大的好处，但在实践中评估电气化可行性的系统设计方法尚未得到充分讨论。本研究提出了一个评估基于热集成的电气化可行性的框架。通过分析几种电热技术的不同特性，选择具有成本效益和/或节能的技术，根据电气化潜力设计电气化实施策略。评估电气化能源系统的经济性，并将其与基于燃烧化石燃料的传统系统进行比较。提供了一个案例研究来证明所提出的设计方法的适用性。结果表明，使用热泵和电极锅炉进行电气化是一个很有前景的策略，而引入电加热器在可再生电力成本大幅降低 23% 的情况下变得经济可行。