Dataset accompanying the publication: Utilisation of waste heat from PEM electrolysers – Unlocking local optimisation

This dataset contains raw model results from 3 different scenarios as part of a publicationon the utilisation of waste heat from a 2.5 MW electrolyser. It is being made public to act as supplementary data for publication(s) and the PhD thesis of Els van der Roest. Also, it might be used by other researchers.<br>The dataset was created during model runs in the period between March 2022 - December 2022 as part of the H-Flex project.<br>Abstract of the paper (published in The International Journal of Hydrogen Energy): Recovery of heat from electrolysers is potentially interesting to increase the total system efficiency, reduce CO₂ emissions, and increase the economic feasibility of both hydrogen and heat production. This study examines different designs for the utilisation of (waste) heat from a 2.5 MW_el polymer electrolyte membrane (PEM) electrolyser. Redundancy is important in the design, to ensure safe operation regardless of the heat demand of the heat consumer. We analysed cases with local heat consumption (with/without a heat pump) and coupling with a district heating network (DHN). Overall, 14-15% of the electricity input to the stack can be utilised by a heat consumer, increasing the total system efficiency to 90% (HHV) with CO₂-savings of 0.08 (DHN)-0.28 (direct use) tonne CO₂/MWh_heat,used. We performed a first-order techno-economic analysis showing that the levelized costs of the electrolyser heat (8.4-36.9 €/MWh) fall within the range of other industrial heat sources and below lower-temperature heat sources.<br>

本数据集包含3种不同场景下的原始模型结果，属于一篇关于2.5 MW电解槽余热利用的学术论文的配套内容。本数据集公开后可作为相关学术论文及Els van der Roest博士学位论文的补充数据，亦可供其他科研人员使用。<br>本数据集于2022年3月至2022年12月的模型运行期间生成，属于H-Flex项目的一部分。<br>发表于《国际氢能期刊》（The International Journal of Hydrogen Energy）的论文摘要如下：电解槽余热回收可有效提升系统整体效率、降低二氧化碳排放，同时提升氢能与热能生产的经济可行性，具备可观的应用潜力。本研究针对一台2.5 MW（电输入功率）聚合物电解质膜（PEM）电解槽的（余热）利用方案开展了多种设计探索。设计中冗余性至关重要，可确保无论热用户的热需求如何变化，系统均可安全运行。研究分析了三类场景：本地热消费（搭配热泵/不搭配热泵）以及与区域供热网络（DHN）耦合的方案。总体而言，电解槽电堆输入电能的14%-15%可被热用户利用，可将系统总效率提升至基于高热值（HHV）的90%，单位供热的二氧化碳减排量为0.08（区域供热网络场景）至0.28（直接供热场景）吨二氧化碳/兆瓦时供热量。本研究开展了一阶技术经济分析，结果显示电解槽余热的平准化成本为8.4-36.9欧元/兆瓦时，处于其他工业热源的成本区间内，且低于低温热源的平准化成本。