Design and evaluation of a novel multi-generation system based on SOFC-GT for electricity, fresh water and hydrogen production

Energy ◽  
2020 ◽  
Vol 197 ◽  
pp. 117162 ◽  
Author(s):  
Nazanin Chitgar ◽  
Mahdi Moghimi
Keyword(s):  
Hydrogen Production ◽  
Fresh Water ◽  
Generation System

A Novel Chemical-Looping Hydrogen Generation System With Multi-Input Fossil Fuels

2013 ◽  
Author(s):  
Xiaosong Zhang ◽  
Hongguang Jin
Keyword(s):  
Hydrogen Production ◽  
Natural Gas ◽  
Fossil Fuels ◽  
Hydrogen Generation ◽  
Chemical Looping ◽  
Generation System ◽  
System A ◽  
Energy Penalty ◽  
Burning Coal ◽  
Chemical Looping Hydrogen Generation

This paper proposes a multi-input chemical looping hydrogen generation system (MCLH), which generates hydrogen, through the use of natural gas and coal. In this system, a new type of oven, burning coal instead of natural gas as heating resource for hydrogen production reaction, is adopted. Coal can be converted to hydrogen indirectly without gasification. Benefits from the chemical looping process, the CO2 can be captured without energy penalty. With the same inputs of fuel, the new system can product about 16% more hydrogen than that of individual systems. As a result, the energy consumption of the hydrogen production is about 165J/mol-H2. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the MCLH system. The promising results obtained may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.

scholarly journals Simulasi produksi hidrogen melalui CO2 methane reforming pada reaktor membran

2018 ◽  
Vol 6 (3) ◽  
pp. 666
Author(s):  
Azis Trianto ◽  
Ira Santrina J C ◽  
Susilo Yuwono
Keyword(s):  
Hydrogen Production ◽  
Membrane Reactor ◽  
Fixed Bed ◽  
Environmentally Friendly ◽  
Alternative Fuel ◽  
Membrane Reactors ◽  
Fixed Bed Reactor ◽  
Methane Reforming ◽  
Generation System ◽  
Promising Alternative

Hydrogen is a promising alternative fuel to establish environmentally friendly energy generation system. One of the methods for producing hydrogen is C02 methane reforming (CMR) process. Despite producing H2, this process also consumes CO2 enabling it to be used as a scheme for mitigating CO2. Conventionally, the hydrogen production via CMR is conducted in a fixed bed reactor. However low conversion is usually found in this kind of reactor. To increase conversion, a membrane reactor can be used. Two types of membrane may be employed to conduct this reaction, i.e. prorous  vycor and nanosil membrane  reactor.  This study  evaluated the  performances  of CMR con 1ucted in membrane ractors andfixed-bed reactor. The results show that the conversion obtained in nanosil membrane reactor is higher than those obtained in porous vycor membrane reactor and fixed-bed reactor. With the change in reactant flowrate, it is obtained that the conversions in membrane reactors are more stable than those infixed bed reactors.Keywords: Hydrogen Production, Membrane Reactor, Methane Reforming AbstrakHidrogen merupakan bahan bakar alternatif yang sangat menjanjikan untuk sistem pembangkitan energi yang lebih ramah lingkungan. Salah satu rute produksi hidrogen adalah melalui reformasi metana dengan karbondioksida (C02 Methane Reforming/CMR). Saat ini telah dikembangkan proses CMR menggunakan membran yang mampu meningkatkan laju produksi H2• Pada makalah ini dikaji dua tipe reaktor membran untuk maksud peningkatan produksi hidrogen tersebut, yakni reaktor membran dengan basis membran porous vycor dan nanosil. Sebagai pembanding, dilakukanjuga evaluasi unjuk kerja reaksi CMRpada reaktorfzxe-bed. Hasil kajian ini menurljukkan bahwa reaktor nanosil danporous vycor mampu memberikan konversiyang lebih besar dibanding reaktor fixed-bed. Lebihjauh, reaktor membran dengan nanosil membran mampu memberikan laju produksi hidrogen yang lebih tinggi dibanding reaktor membran dengan membran porous vycor. Lebih jauh, pada perubahan laju molar reaktan, reaktor membran menurijukkan stabilitas yang lebih baik dibanding reaktor fixed-bed.Kata Kunci: Produksi Hidrogen, Reaktor Membran, Reformasi Metana

Design and Analysis of a Novel Integrated Wind-Solar-OTEC Energy System for Producing Hydrogen, Electricity, and Fresh Water

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Haris Ishaq ◽  
Osamah Siddiqui ◽  
Ibrahim Dincer
Keyword(s):  
Hydrogen Production ◽  
Fresh Water ◽  
Energy System ◽  
Energetic Efficiency ◽  
Production Cycle ◽  
Energy And Exergy ◽  
New Energy ◽  
Parametric Studies ◽  
Ocean Thermal Energy ◽  
Power Generation Cycle

A new energy system for power, hydrogen and fresh water production is proposed. The environmentally benign ocean thermal energy conversion (OTEC), wind and solar energy resources are utilized. The hybrid thermochemical CuCl cycle is used for hydrogen production, and the reverse osmosis (RO) desalination system is incorporated for producing fresh water. The presently developed system is analyzed through thermodynamic energy and exergy approaches. The energetic efficiency of the integrated trigeneration system is determined to be 45.3%, and the exergetic efficiency is found to be 44.9%. In addition to this, the energy efficiency of the OTEC power generation cycle is 4.5% while the exergy efficiency is found to be 12.9%. Furthermore, the CuCl hydrogen production cycle is examined to have exergetic and energetic efficiencies of 36% and 35.2%, respectively. Also, numerous parametric studies are performed to analyze the system performance at different operating parameters.

POTENCY OF SOLAR HYDROGEN GENERATION SYSTEM IN URBAN AREA: CASE STUDY OF BANDUNG CITY

2016 ◽  
Vol 6 (2) ◽  
pp. 49
Author(s):  
Pramujo Widiatmoko ◽  
Hary Devianto ◽  
Isdiriayani Nurdin ◽  
Saumi Febrianti Khairunnisa ◽  
Muhammad Irfan Rafi
Keyword(s):  
Hydrogen Production ◽  
Urban Area ◽  
Electric Vehicles ◽  
Production System ◽  
Hydrogen Generation ◽  
Generation System ◽  
Solar Hydrogen ◽  
The Future ◽  
Rooftop Solar

Development  of  hydrogen  production  system  is  important  in  the  future  to support  electric  vehicles operation. This paper studies potency of rooftop PV-PEM electrolyser system connected to fuel station in urban area of Bandung City. Rooftop inclination and orientation of the PV influences the generated electricity by 0.8 – 4.2% compared with horizontal installed-PV. With the solar to hydrogen efficiency of 8.5%, we found that the rooftop installed PV-electrolyser system in Bandung City with supporting area with a radius of 500 m is potentially able to provide fuel for up to a hundred vehicles daily. Further, the potency of rooftop solar hydrogen generation was mapped.Keywords: Solar hydrogen, urban rooftop, application prospect, PV-PEM

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