A combined heat and green hydrogen (CHH) generator integrated with a heat network
A combined heat and green hydrogen (CHH) generator integrated with a heat network
复制标题
DOI：
10.1016/j.enconman.2021.114686
复制
发表时间：
2021-10
影响因子：
10.4
通讯作者：
Dominic Burrin;Subhasish Subhasish-Subhasish;A. Roskilly;A. Smallbone
中科院分区：
文献类型：
--
作者：
Dominic Burrin;Subhasish Subhasish-Subhasish;A. Roskilly;A. Smallbone
热电联产（CHP）系统提供了很高的能源效率，因为它们既利用了产生的电力，也通过向当地消费者共同供应多余的热量。这项工作展示了热氢联产（CHH）系统的潜力，在该解决方案中，质子交换膜（PEM）电解系统以60-70%的效率生产氢气，并将多余的热量共同供应给当地的热网。本文研究了电解余热的捕获和利用方法。所分析的系统能够捕获每兆瓦电力312千瓦的热能，并可以在75°C或45°C的温度下将其作为热水输送，这分别适用于现有的区域热网和低温热网。这使得CHH系统的整体效率达到94.6%。根据氢气和热能销售收入产生的收入，进行了经济分析，结果显著降低了氢气的平准化成本。
Combined heat and power (CHP) systems offer high energy efficiencies as they utilise both the electricity generated and any excess heat by co-suppling to local consumers. This work presents the potential of a combined heat and hydrogen (CHH) system, a solution where Proton exchange membrane (PEM) electrolysis systems producing hydrogen at 60–70% efficiency also co-supply the excess heat to local heat networks. This work investigates the method of capture and utilisation of the excess heat from electrolysis. The analysed system was able to capture 312 kW of thermal energy per MW of electricity and can deliver it as heated water at either 75 °C or 45 °C this appropriate for existing district heat networks and lower temperature heat networks respectively. This yields an overall CHH system efficiency of 94.6%. An economic analysis was conducted based on income generated through revenue sales of both hydrogen and heat, which resulted in a significant reduction in the Levelized Cost of Hydrogen.