Energetic and exergoeconomic assessment of a multi-generation energy system based on indirect use of geothermal energy

被引：189

作者：

Akrami, Ehsan ^{[1
]}

Chitsaz, Ata ^{[2
]}

Nami, Hossein ^{[3
]}

Mahmoudi, S. M. S. ^{[3
]}

机构：

[1] Shahid Beheshti Univ, Fac Mech & Energy Engn, Tehran, Iran

[2] Urmia Univ, Fac Mech Engn, Orumiyeh, Iran

[3] Univ Tabriz, Fac Mech Engn, Tabriz, Iran

来源：

ENERGY | 2017年 / 124卷

关键词：

Exergoeconomic analysis; Geothermal energy; Multi-generation; Organic Rankine cycle; PEME; Absorption refrigeration cycle; ORGANIC RANKINE-CYCLE; PEM FUEL-CELLS; HYDROGEN-PRODUCTION; EXERGY ANALYSES; COST EVALUATION; POWER-PLANT; WASTE HEAT; OPTIMIZATION; ELECTROLYSIS; COMBINATION;

D O I：

10.1016/j.energy.2017.02.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a geothermal based multi-generation energy system, including organic Rankine cycle, domestic water heater, absorption refrigeration cycle and proton exchange membrane electrolyzer, is developed to generate electricity, heating, cooling and hydrogen. For this purpose, energetic, exergetic and exergoeconomic analysis are undertaken upon proposed system. Also, the effects of some important variables, i.e. geothermal water temperature, turbine inlet temperature and pressure, generator temperature, geothermal water mass flow rate and electrolyzer current density on the several parameters such as energy and exergy efficiencies of the proposed system, heating and cooling load, net electrical output power, hydrogen production, unit cost of each system products and total unit cost of the products are investigated. For specified conditions, the results show that energy and exergy efficiencies of the proposed multigeneration system are calculated about 34.98% and 49.17%, respectively. The highest and lowest total unit cost of the products estimated approximately 23.18 and 22.73 $/GJ, respectively, by considering that geothermal water temperature increases from 185 degrees C to 215 degrees C. (C) 2017 Published by Elsevier Ltd.

引用

页码：625 / 639

页数：15

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