Development and multi-objective optimization of geothermal-based organic Rankine cycle integrated with thermoelectric generator and proton exchange membrane electrolyzer for power and hydrogen production

2018 ◽  
Vol 174 ◽  
pp. 112-125 ◽  
Author(s):  
E. Gholamian ◽  
A. Habibollahzade ◽  
V. Zare
Keyword(s):  
Hydrogen Production ◽  
Thermoelectric Generator ◽  
Proton Exchange Membrane ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Proton Exchange ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Exchange Membrane

scholarly journals Thermodynamic performance analysis and optimization of a power and hydrogen generation system based on geothermal flash, dual-pressure organic Rankine cycle using zeotropic mixtures, and PEM electrolyzer

2020 ◽  
Author(s):  
Seyed Saman Ashraf Talesh
Keyword(s):  
Hydrogen Production ◽  
Proton Exchange Membrane ◽  
Hydrogen Generation ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Proton Exchange ◽  
Geothermal System ◽  
Base Case ◽  
Geothermal Heat ◽  
Exchange Membrane

Abstract In this study, a thermodynamic model and optimization of a flash-binary geothermal system are proposed for power and hydrogen production. The binary cycles contain a dual-pressure ORC cycle and proton exchange membrane electrolyzer for power and hydrogen production. The combination of dual-pressure organic Rankine cycle with zeotropic mixtures enhances the performance of the system considerably, and selection of the best kind of zeotropic mixture as the working fluids of the DORC unit is one of the important methods to improve the performance of the suggested system. Also, the Genetic algorithm is employed to optimize the net output power of the system, in which the results of optimization show that the best performance belongs to Pentane (0.467)/Butane (0.533) with first and second-law efficiencies of 16.66%, 58.03%, respectively, and hydrogen production of 0.3683 kg/hr. Besides, for the base case simulation, the energy and exergy efficiencies of the whole system are reported by about 16.66% and 58.03%, respectively, also for this condition, the derived power from the proposed model and overall exergy destruction is calculated approximately 132.41 kW, and 90.08 kW, respectively and geothermal heat source generates 0.306 kg/hr hydrogen by the proton exchange membrane electrolyzer.

scholarly journals Modeling and Simulation of a Proton Exchange Membrane Fuel Cell Alongside a Waste Heat Recovery System Based on the Organic Rankine Cycle in MATLAB/SIMULINK Environment

2021 ◽  
Vol 13 (3) ◽  
pp. 1218
Author(s):  
Sharjeel Ashraf Ansari ◽  
Mustafa Khalid ◽  
Khurram Kamal ◽  
Tahir Abdul Hussain Ratlamwala ◽  
Ghulam Hussain ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Waste Heat Recovery ◽  
Proton Exchange Membrane ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Proton Exchange ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Exchange Membrane

The proton exchange membrane fuel cell (PEMFC) is the fastest growing fuel cell technology on the market. Due to their sustainable nature, PEMFCs are widely adopted as a renewable energy resource. Fabricating a PEMFC is a costly process; hence, mathematical modeling and simulations are necessary in order to fully optimize its performance. Alongside this, the feasibility of a waste heat recovery system based on the organic Rankine cycle is also studied and power generation for different operating conditions is presented. The fuel cell produces a power output of 1198 W at a current of 24A. It has 50% efficiency and hence produces an equal amount of waste heat. That waste heat is used to drive an organic Rankine cycle (ORC), which in turn produces an additional 428 W of power at 35% efficiency. The total extracted power hence stands at 1626 W. MATLAB/Simulink R2016a is used for modeling both the fuel cell and the organic Rankine cycle.

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