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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JANUARY 2017 , Volume 16 , Number 10 ; Page(s) 42 To 50.
 
Paper: 

HYDROGEN PRODUCTION USING WASTE HEAT RECOVERY OF MATIANT NON-EMISSION SYSTEM VIA PEM ELECTROLYSIS

 
 
Author(s):  RANJBAR SEYED FARAMARZ*, NAMI HOSSEIN, KHORSHID GHAZANI ALIREZA, MOHAMMADPOUR HAMED
 
* DEPARTMENT OF MECHANICAL ENGINEERING, TABRIZ UNIVERSITY, TABRIZ, IRAN
 
Abstract: 

In the current study, with the aim of power and hydrogen production, combination of Matiant cycle with an ORC unit and PEM electrolysis has been analyzed from the viewpoints of energy and exergy. Waste heat of the Matiant cycle is used to run the ORC. Effect of some designing variables, i.e. evaporator temperature, minimum temperature difference in heat exchanger, degree of superheating in ORC turbine inlet and isentropic efficiency of ORC turbine on the rate of produced hydrogen, ORC produced power and exergy efficiency of the combined system has been investigated. It is observed that, increasing the minimum temperature difference leads to decrease in the rate of produced hydrogen, ORC produced power and consequently exergy efficiency of the combined system. Also, change in the evaporator temperature optimizes the rate of produced hydrogen, ORC produced power and therefore the exergy efficiency of the combined system. Also, results showed that increasing the degree of superheating in the ORC turbine inlet decreases the rate of produced hydrogen, ORC produced power and the exergy efficiency of the combined system. As expected, increasing the isentropic efficiency of ORC turbine leads to an increase in rate of produced hydrogen, ORC produced power and therefore the exergy efficiency of the combined system.

 
Keyword(s): PEM ELECTROLYSIS, HYDROGEN PRODUCTION, MATIANT SYSTEM, ORC, EXERGY EFFICIENCY
 
References: 
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