This paper focuses on introducing a new configuration of a hybrid system for producing power and hydrogen together with pre-heating natural gas in PRSs. The configuration is based on regenerative Brayton, Rankine and proton exchange membrane electrolyzer cycles. Also, a heat exchanger is embedded for supplying the required heating load of NG pre-heating to prevent hydrate formation. A robust energy, exergy, and eco-environment mathematical model with real assumptions is developed to prove feasibility of the introduced system. To make the study applicable for different PRS capacities, the analyses are done for different equipment sizes during different months of year. The parametric study showed that design variables of the Brayton cycle and pressure of inlet NG are very effective parameters in the design of this proposal.

Analyzing the results in different months illustrated that the best performance is achieved in January; so that, 20.25 MW of power, 19.91 MW of heating load, and 11.96 kg/h hydrogen are produced for the optimum equipment variables in this month. At these conditions, the first- and second-law efficiencies and the levelized total costs rate are respectively obtained as 58.91%, 34.02%, and 7.03 $/GJ. Also, the payback period is 6.77 years based on the NPV approach.

本文重点介绍了一种新的混合系统配置，用于在 PRS 中生产电力和氢气以及预热天然气。该配置基于再生布雷顿、兰金和质子交换膜电解槽循环。此外，还嵌入了一个热交换器，用于提供天然气预热所需的热负荷，以防止形成水合物。开发了具有真实假设的稳健的能源、火用和生态环境数学模型，以证明所引入系统的可行性。为了使研究适用于不同的 PRS 容量，分析是针对一年中不同月份的不同设备尺寸进行的。参数研究表明，布雷顿循环的设计变量和进气口压力是本方案设计中非常有效的参数。

分析不同月份的结果表明，最好的表现是在一月份；因此，本月为最佳设备变量生产了 20.25 MW 的功率、19.91 MW 的热负荷和 11.96 kg/h 的氢气。在这些条件下，第一和第二定律效率和平准化总成本率分别为 58.91%、34.02% 和 7.03 $/GJ。此外，根据 NPV 方法，投资回收期为 6.77 年。