Technical and economic evaluation of the combined production cooling, heating, power, freshwater, and hydrogen (CCHPWH) system in the cold climate

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2022-04-01 DOI:10.1016/j.jtice.2022.104262

Hassan Hajabdollahi, Amin Saleh, Vahid Ghamari, Mohammad Shafiey Dehaj

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引用次数: 4

Abstract

Background

Multi-generation plant is a decentralized, energy-efficient method of different type of energy production. Such a system can deliver multiple benefits and advantages compared to conventional energy production such as improvement in the efficiency, emission, cost and reliability.

Methods

Technical-economic analysis of the combined cooling, heating, power, freshwater and hydrogen generation system (CCHPWH) are presented in this paper. Selecting the nominal power of prime movers, their numbers, the cooling capacity of absorption and electrical chillers, the heating capacity of auxiliary boiler, electric cooling ratio (the ratio of electrical chiller capacity to the cooling load demand), motive steam pressure, number of effects, motive steam flow rate, feed flow rate and 24 partial loads for the prime mover during in the year are considered as 35 design parameters. The optimization of the studied system was used by the genetic algorithm to obtain the minimum total annual cost (TAC) as an objective function. The total annual cost includes economic, energy and environmental parameters. It should be noted that selling/buying electricity to/from the grid is allowable in this study.

Significant findings

The optimum results showed 24.8% reduction in the total annual cost of the CCHPWH system using a gas engine as prime mover as compared with a gas turbine. In addition, the exergy efficiency of the cogeneration system in the optimal state for the prime mover of the gas turbine and the gas engine was obtained 31.21% and 45.58%, respectively. Finally, the optimal results in different cases were compared and results were discussed.

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冷、热、电、淡水、氢联合生产系统在寒冷气候下的技术经济评价

多联产电站是一种分散的、节能的不同类型能源生产方式。与传统能源生产相比，这种系统可以带来多种好处和优势，如效率、排放、成本和可靠性的提高。方法对冷、热、电、淡水、制氢联产系统进行了技术经济分析。选取原动机标称功率、数量、吸收式和电制冷机制冷量、辅助锅炉供热量、电制冷比(电制冷机制冷量与冷负荷需求之比)、原动机蒸汽压力、效应数、原动机蒸汽流量、给料流量、原动机全年24个分负荷作为35个设计参数。采用遗传算法对系统进行优化，以最小的年总成本(TAC)为目标函数。年度总成本包括经济、能源和环境参数。应该指出的是，在这项研究中，向电网出售/购买电力是允许的。优化结果表明，与燃气轮机相比，燃气发动机作为原动机的CCHPWH系统年总成本降低了24.8%。此外，燃气轮机原动机和燃气发动机原动机热电联产系统在最优状态下的火用效率分别为31.21%和45.58%。最后，对不同情况下的最优结果进行了比较和讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.